Catalogue

INDEX

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

SECTION 1: CORROSION AND CATHODIC PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7

SECTION 2: MATERIAL SELECTION & GALVANIC CORROSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9

SECTION 3: MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-11

SECTION 4: ANODE ALLOY GROUPS AND APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-12

ZINC ALLOY WELD-ON BOLT-ON BLOCK ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

THE "BARRA" ZINC ALLOY ANODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

ZINC ALLOY BOLT-ON BLOCK ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-15

ZINC ALLOY WELD-ON / BOLT-ON TEAR DROP ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

ZINC ALLOY BOLT-ON TEAR DROP ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

ZINC ALLOY SHAFT ANODES TO SUIT IMPERIAL PROPELLER SHAFTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

ZINC ALLOY SHAFT ANODES TO SUIT METRIC PROPELLER SHAFTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

ZINC ALLOY DONUT SHAFT ANODES TO SUIT IMPERIAL PROPELLER SHAFTS WHERE SPACE IS LIMITED. . . . . . . . . . . . .18

EXTRUDED ZINC ALLOY ROD ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

CAST ZINC ALLOY ROD ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

ZINC ALLOY RUDDER ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

ZINC ALLOY CONDENSER ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

ZINC ALLOY POT ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

ZINC ALLOY LARGE WELD-ON / BOLT-ON ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

ZINC ALLOY LARGE BOLT-ON ANODES SEE ALSO ZINC ALLOY BOLT-ON ANODES PAGES 13 TO 16 . . . . . . . . . . . . . . . . . . . .22

ZINC ALLOY STRING ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

ZINC ALLOY- TANK AND INDUSTRIAL ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

TYPICAL STEEL INSERT CONFIGURATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

ZINC ALLOY/ ALUMINIUM ALLOY ENGINE ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24-29

ZINC ALLOY PROPELLER NUT ANODES TO SUIT OUTBOARDS, OUTDRIVES AND INBOARDS. . . . . . . . . . . . . . . . . . . . . . . . .30

ZINC RIBBON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

ZINC ELECTROPLATING ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

ALUMINIUM ALLOY- TANK AND INDUSTRIAL ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

ALUMINIUM ALLOY WELD-ON / BOLT-ON ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

ALUMINIUM ALLOY BOLT-ON ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

ALUMINIUM ALLOY POT ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

ALUMINIUM ALLOY AND ZINC ALLOY BRACELET ANODES (UNDER DEVELOPMENT) . . . . . . . . . . . . . . . . . . . .33

CAST MAGNESIUM ALLOY ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

CAST MAGNESIUM ALLOY CONDENSER ANODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

EXTRUDED MAGNESIUM RIBBON (HIGH POTENTIAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

EXTRUDED MAGNESIUM ANODE RODS (SOLID AND FLEXI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35-37

EXTRUDED ALUMINIUM ALLOY RODS (SOLID AND FLEXI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

ENGINE ANODE QUICK REFERENCE CHARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39-42

CATHOMETER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

REPRODUCTION IN WHOLE OR IN PART IS NOT PERMITTED WITHOUT THE WRITTEN AUTHORISATION OF

CATHODIC DIECASTING QUEENSLAND AUSTRALIA

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Protect your investmentUse CDQ anodes

3

INTRODUCTION

Cathodic Diecasting Queensland P/L has been operating since1984. An Australian owned company, Cathodic Diecasting specialises in themanufacture and supply of anodes to the corrosion protection andplating industries. Our anodes range from large anodes for oil rigplatforms down to anodes for cray/crab pots. We supply anodes forships, yachts, marine motors, tanks, hot water systems etc. and all areavailable in either Aluminium, Zinc or Magnesium.

Our commitment to qualityCathodic Diecasting is committed to providing our customers withanodes of the highest quality. Our staff have a full understanding ofthe specialised nature of our products and the need for absoluteattention to detail to ensure that our products meet these high standards.

Quality controlStandard operating procedures are employed in the production of our anodes and only the highest quality raw materials are purchasedfrom ISO 9002 certified suppliers who can meet our demands for quality. Regular in-house laboratory checking with our Optical EmissionSpectrometer ensures that all castings conform to the required analysis or chemical specification.

Quality assurance Our practices and procedures follow the guidelines of the ISO 9002 quality system for manufacturing. All anodes produced comply withspecifications detailed in Australian Standard 2239-2003, Galvanic (Sacrificial) Anodes for Cathodic Protection and N.A.C.E. standardRPO387-99. Metallurgical and Inspection Requirements for cast galvanic anodes for offshore applications. Our Zinc anodes also conform to the U.S. Military Specification MIL-A-18001 K for chemical composition, recognised as the world standardfor anode quality.Where possible, every anode is stamped with a heat number identification, allowing complete traceability throughout the manufacturingprocess. Computer generated heat logs detail accurate alloy batches to ensure continuity in our process. Certificates of Analysis areavailable on request with any purchase order.

Assistance and after sales.Our staff includes an engineer, a metallurgist, and highly skilled trades people who collectively have over 50 years experience in thecasting industry. Our subcontractors include corrosion (chemical) engineers, drafting, patternmaking, founding and general engineers.

Cathodic Diecasting Qld P/L is affiliated with the following organisations:Australasian Corrosion Association Standards AustraliaAustralian Industry GroupAustralian Diecasting Association

Our Optical Emission Spectrometer ensures conformity on all heat melts.

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SECTION 1:CORROSION AND CATHODIC PROTECTION

1.1 Theory of CorrosionCorrosion of a material is an electro-chemical

reaction between the material and its environment,which results in the destruction or deterioration ofthe material. The corrosion or degradation ofmaterials is not necessarily restricted to metals.

Corrosion of a metal is known as anelectrochemical or electrolytic reaction. This isassociated with a flow of electrical energy, ie:corrosion current. In normal circumstances threefactors are necessary to cause a reaction. At leastone metal shall be present, an electrolyte such aswater, soil or concrete shall be present and Oxygenmust also be present.

It is also necessary in the case of galvaniccorrosion between different metals, or metals withdifferent energy levels, that they are electricallyconnected.

Corrosion occurs in a number of differing ways.It can usually be attributed to the poor compatibilityin selection of materials. The selection andconnection of various types of metals is one of themost crucial steps in the process of corrosioncontrol.

The most widely used metal in industry thatsuffers from corrosion is steel. This is the metal thatis also used extensively in the marine industry. It istherefore the metal most well known for marinecorrosion activity. Other metals widely used in themarine industry for mechanical and structural

Steels. Brasses and Bronze Alloys are also widelyused.

metals to provide it with varying degrees ofmechanical properties and better corrosionresistance properties. For example, Marine grade

boats has considerable additions of other elementsadded to the alloy to render them less active andmore corrosion resistant (or more passive).

Types of Corrosion:The main types of corrosion of most interest to

marine applications are:- Dissimilar Metals- Pitting & Cavitation- Stray Current

1.2 Why Does Corrosion Occur?Or Why Metals Return To RockWhen man makes metals there is a varying

degree of electro, mechanical and chemical energyused to refine the metal from the ore state to deliverthe metal into a useable state. A large portion of theenergy used in refining remains as stored or residualenergy in metals.

Magnesium- the Hyperactive AlloyMagnesium is a light and strong material. It is

also one most prone to corrosion activity in itsunalloyed state. This is due to the high levels ofenergy used in the manufacture of commerciallypure Magnesium. Like all pure metals, Magnesiumwill have a tendency to return to its natural state asan ore or oxide of the metal. Part of this decayprocess also results in the release of the storedenergy as DC Current (Milliamps) as seen in atypical galvanic corrosion cell.

Considerable energy is also used in the

extensive as Magnesium, these metals in theunalloyed state have a strong tendency to corrode oroxidise and return to their “ore” (the metalsoxidised state). This reaction is most commonlyreferred to as corrosion.

The energy used to manufacture one kilogram of

energy that is required to produce a similar amountof steel.

Typical galvanic cell

When Aluminium is used in the marine industry,

applications are Aluminium Alloys and Stainless

the primary Aluminium metal is alloyed with other

Aluminium plate for the manufacture of Aluminium

Aluminium anodes have active metals alloyed withthem to render the Aluminium active.

Aluminium & Zinc – Energetic Anodes

manufacture of Aluminium and Zinc. Whilst not as

high-grade Aluminium is approximately double the

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1.3 The Corrosion ReactionThis is best explained by considering how a

simple battery cell operates. A battery consists of acombination of a Zinc anode plate and a coppercathode plate immersed in a solution of salt water. Ifthe plates are not connected to each other, nogalvanic reaction takes place. Immediately they areelectrically connected, the Zinc plate dissolves (orcorrodes) to form positively charged particlesknown as Zinc ions in the salt water solution.Simultaneously, oxygen that is dissolved in the saltwater solution is consumed at the copper cathodeplate. With the dissolution of the Zinc plate into thesolution, electrons are released. These flow throughthe circuit and are consumed at the copper cathode.Ions migrate through the solution and combine withother ions to complete the corrosion reaction.

If a voltmeter were placed in the circuit betweenthe anode and cathode, the difference in energylevels would be measured as a DC voltage.

In the case of marine vessels, by employingcathodic protection, the natural corrosion ordeterioration mechanism of metals can be arrested.It is IMPORTANT to remember that if the metalsare not connected, no galvanic corrosion cells willoperate.

1.4 Rate of CorrosionWhen a metal is immersed in an electrolyte it

generates an electrical current. The currentgenerated is dependent on the type of electrolyte.Any metal will corrode at a much faster rate in seawater than in fresh water. The corrosion rate istypically ten times faster. Sea water is a veryconductive electrolyte (high corrosion rate or very

anodes perform best in seawater conditions.Freshwater is much less conductive (high resistivity)and pure water is a very poor conductor (higher inresistivity).

This theory can be applied to the followingstatement:

“The resistivity of salt water is 0.25 ohm metres.Freshwater used in most city water supplies istypically 50 ohm metres. This results in adifference of 200 times in resistivity andcorrespondingly reduces an anodes capacity todeliver protective current”.

Refer Ohms Law: I = V/R or V=IRWhere: I=(amps), V=(volts), R=(resistance)

The type of electrolyte affects the performance of

determines the best performance of aluminiumanodes. Zinc however is more commonly used forboth high and low salinity (brackish water).

It is important to remember that the aim ofcathodic protection is to shift the natural corrosionenergy or voltage in a negative direction to a point atwhich corrosion does not occur. With steel it isnormal to shift the natural corroding potential(voltage) from -500mV to -800mV (with respect toa standard silver / silver chloride half cell). At thispoint cathodic protection is generally achieved andcorrosion of the steel should cease.

(Note: -800mV is the minimum protectioncriteria).

1.5 Galvanic Energy in MetalsAll metals have an energy or stress level which

can be measured. This level, is measured as themetal’s natural voltage. This is the same in allelectrolytes at any location worldwide (using likecircumstances of temperature and velocity). Thusmetals can be tabulated as a function of their naturalvoltages or potentials.

This tabulation of energy levels for alloys ofmetals is referred to as the Galvanic Series. It refersto the potential voltage exhibited by all metals intheir most widely used form - as an alloy with othermetals.

Corrosion reaction illustrated by a simple batterycell.

low in resistivity). Aluminium alloy or Zinc alloy

Aluminium and Zinc alloy anodes. The salinity

The Galvanic SeriesThe table is intended to give a very general

picture of the order of the series in respect to thematerials used in the Marine Environment. Moredetailed data (complete breakdown of the copperalloys, stainless steels, etc) can be located inpublished data on the Galvanic Series.

Metal or Alloy Potential in Volts

Anodic or ActiveCorroding (Base) End Magnesium Anode

(High Potential Alloy) -1.64 Magnesium Anode (Low Potential Alloy) -1.53

-1.10 to -1.08Zinc Anode (AS2239-Z1) -1.03

-0.96 to –0.68Cast Iron -0.61Carbon Steel (Mild Steel) -0.50 to -0.55Copper Alloys (Brass/Bronze) -0.36 to –0.29Cupronickels -0.29 to –0.22Copper -0.20Silver -0.13316 Stainless (Active-Passive) -0.18 to –0.06

Protected (Noble) EndCathodic Carbon (Graphite) +0.25

Platinum +0.26

The Galvanic SeriesThe Galvanic Series is a table of metals that

ranges from the most reactive (anodic metals) to theleast or non-reactive (Cathodic or Noble) metals.Metals shown low in the series are said to be moreNoble (more resistant to corrosion), whilst metals atthe top of the series are called Active or Anodic(active – prone to corrosion).

have a large voltage difference when connected tometals such as Copper, Platinum, Gold, andTitanium (cathodes) and therefore the rate ofcorrosion / oxidation and loss of Magnesium, Zinc

be quite rapid.Connection of a more negative metal such as a

steel hull (Pa) (-500mV) to a bronze propeller (Pc)(-300mV) will generate a driving voltage of 200mV(Pa – Pc). In this circumstance the steel would

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become anodic and the bronze cathodic and thedriving voltage will cause a current to flow.

As an example, if steel is connected to a piece ofcopper, brass or bronze, the steel will become ananode and the copper, brass or bronze will become acathode. The steel will be consumed at the rate of10 kg of steel / amp / year. This means that if oneamp of current were discharged from a steel hull ofa vessel for one year, there would be ten kilogramsof steel lost to corrosion. A steel plate 14mm x300mm x 300mm will weigh approximately tenkilograms.

1.6 Size of Anode & Cathode Sites. A small anode site connected with a large

cathode site will result in rapid consumption of theanode site.

A large anode site connected with small cathodeswill generally result in slow consumption of theanode.

It is the surface area of the anodic and cathodicmetals and the resistivity (or resistance properties)of the water (electrolyte) that determines the amountof DC current (milliamps) that flows from an anode.It is the flow of electrons (mA) driven by thegalvanic energy (voltage) of the metal/s that resultsin the amount of corrosion, oxidation or degradationof any metal.

Using Ohms Law (I=V/R) and the surface area ofan anode (Resistance), it is possible to calculate theamount of protective current (milliamps) able to bedelivered when a sacrificial anode is connected to a

Aluminium Alloys

Aluminium Anode

Magnesium, Zinc and Aluminium alloy (anodes)

or Aluminium would, on comparative surface areas,

Steel or Aluminium cathode.

Stress cell of a bent keel bolt.

1.7 Corrosion Of Steel - Where No DissimilarMetals Are Present

As explained, galvanic corrosion occurs whentwo or more differing metals are coupled togetherand are immersed in a common electrolyte such assea water. However, we have all seen steel piles andother steel structures, or simple floating barges,with no other galvanic metals connected which arecorroded. This occurs from a number of the basicmechanisms already discussed. If one focuses onSTRESS levels or energy risers created in thevarious metals, it is also possible to create stressrisers in steel structures.

For example, when steel is welded or joined, thepoint of the weld or joint is subjected to huge stressconcentrations during the welding and solidificationprocess. Thus welds will become anode sites andthus are more prone to corrosion as they try torelease this energy in order to become very activeanodic sites. The unstressed parent plate thenbecomes the cathodic site and places large demandson the dissolution of the welded anodic areas. Thisstress also occurs when steel is bent, bashed orsome how mechanically worked.

Similarly, major variations in oxygenconcentration will cause anodic and cathodic siteson a single surface of immersed steel. The area withthe least oxygen becomes the Anodic site and thearea with more oxygen becomes cathodic. Thus it isalso possible to achieve a form of galvaniccorrosion on steel structures that have been welded,mechanically worked or have differing oxygenlevels in the immersed condition. In fact it ispossible to cause this anode cathode reaction onalmost any metals immersed in water under similarconditions to those above.ditionss to those above.

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SECTION 2:MATERIAL SELECTION &GALVANIC CORROSION

2.1Generally metallic hulls tend to have more

problems due to the various metals used for theirspecific purposes. Bonding should be attended toand cathodic protection should be provided fromsacrificial anodes for immersed surfaces. Steel is avery robust material and if painted with a goodmarine coating system it can generally be easilyprotected and will not subsequently suffer manyadverse effects. (Refer Sections 3.4 & 3.5, straycurrent activity for steel damage effects).

On metallic vessels it is generally found thatfifty percent of the anodes are required to beinstalled in the stern frame region. (Aft end ofvessel).

subject to a phenomenon where it can suffercorrosion from both acid and alkali degradation of

Damage to this natural protective layer on the

susceptible to corrosion activity or degradation.For any acidic or anodic reactions, the solution is

Alloy or Zinc Alloy anodes. These anodes areusually supplied with stainless steel insert straps forattachment to the studs on the hull. Alkali(overprotection) problems, are usually the result ofexcessive anodes fitted to the hull. This is bestcontrolled by adhering to the manufacturersrecommendations on the installation of anodes oralternatively by seeking the advice of a corrosionengineer.

good practice to use a doubler plate for connectionof the anodes to the hull. The action of cathodicprotection can produce an alkaline solution in theimmediate vicinity of the anode. It is also goodpractice to ensure the application of a very soundhull coating system on the doubler plate andimmediate surrounding areas. The attachment ofstainless steel studs to the doubler plate also ensuresthat any mechanical damage due to unexpectedgrounding does not tear studs and anodes out of thehull plating and thereby jeopardise the integrity ofthe hull.

WARNING: Magnesium alloy anodes shouldNEVER be used on any vessel in salt-water servicewithout the advice of a corrosion engineer. Theuse of magnesium alloy anodes will usually

they can also cause major damage to the coating

2.2 Coating SystemsTHE BENEFITS OF A SYSTEM OF GOOD

COATINGS AND A CATHODICPROTECTION SYSTEM

In order to provide cathodic protection from anumber of sacrificial anodes attached to a hull, it isnecessary for the anodes to deliver an amount ofDC Current (milliamps) to the immersed surfaces ofa hull. However in order to reduce the amount ofDC Current required to achieve protection for thedesired life of the hull,it is necessary to reduce thedemand for cathodic protection current (milliamps).

This is best achieved in the marine industry bythe addition of a dielectric (high resistance) barrieron the surface of the metal. This is normallyachieved by the application of a resistive layer ofcoating (or paint). It is important to understand inthis application of paint, that the primary objectiveof corrosion protection is to achieve an elevateddielectric strength (resistance) of the hull plating tothe sea water.

The application of paint coatings that have poordielectric properties will not reduce the corrosionprotection load on the anodes. Anti fouling paintsand some metallic based paints applied directly tothe metallic hull have poor dialectric properties.

A typical aluminium doubler plate configuration

Steel / Aluminium Vessels

Aluminium is an amphoteric material and can be

the protective oxide layer on the Aluminium.

Aluminium can then render the Aluminium

usually to install a system of sacrificial Aluminium

Note: For Aluminium vessels, it is considered

generate excess alkali on Aluminium hulls and

systems on steel and aluminium hulls.

9

The application of coatings and anodes (CP)should be seen as complimentary to each other.

2.3 Internal Corrosion – BilgesThe internal side of a vessel’s hull is also prone

to corrosion. A bilge is considered a wet area thatcan contain substantial quantities of water and otherfluids. A bilge should therefore be treated like anyother structure regardless of whether it has anygalvanic connection. A bilge should be correctlycoated and sacrificial anodes can be employed.Often long slender anodes are installed in a bilge orballast tank to protect the internals of the area.Another alternative is the “string type” anode(s)where a stainless steel wire core is used to connectthe “string of anodes” to the hull.

2.4 Timber Hull Vessels & Skin FittingsIf two dissimilar metallic skin fittings are bonded

(or interconnected), galvanic corrosion activity onthe immersed and embedded surfaces may occur.

When skin fittings, cooling pipes, shaft or apropeller show signs of corrosion, it is importantthat correct electrical bonding be undertaken andsufficient anode material be provided. (Furtherinformation can be found in section 3.7 Bonding &Electrical Continuity). It is also important that theuse of suitable corrosion prevention coatings to thehull and fittings are utilised to reduce the amount ofcathodic protection current required to be deliveredby the sacrificial anodes.

2.5 Galvanised SteelGalvanising is a metallising process that was

developed to provide protection of metals fromcorrosion in atmospheric (above the water)situations. If galvanised coated fittings areimmersed in the ocean without the addition of adielectric coating, the bare galvanising will besubjected to the same corrosion mechanisms as aZinc anode. This will result in dissolution of theZinc coating and later potential corrosion failure ofthe metal.

2.6 Fibreglass VesselsGenerally corrosion on fibreglass vessels is

restricted to the shaft/propeller, rudders and skinfittings. The problem can normally be rectified by ashaft anode or bonding to a hull anode. To reduce

drag on very competitive yachts, owners will oftensuspend anodes over the side on conductors whenmoored and withdraw them during races so as toreduce drag. Professional advice should be sought ifowners wish to follow this practice, as it is not themost ideal means of achieving cathodic protection.

2.7 Osmosis NOTE: Osmosis on fibreglass hulls is the result

of osmotic or ionic migration of moisture throughpoorly applied fibreglass to areas of lamination ofthe fibreglass and the matting. These are referred toas low-density defects and normally do not occuron hulls manufactured under strict factoryconditions. Such damage generally has norelationship to any sacrificial anode cathodicprotection systems installed on fibreglass hulls.

SECTION 3: MAINTENANCE

3.1 Decks, Deck Fittings, and RiggingAll non-immersed fixtures are subject to the

marine environment and therefore should beselected for their corrosion resistant properties.

Where mild steel is utilised it is necessary toapply suitable protective coatings in conjunctionwith a routine maintenance program.

3.2 Water TanksThe fresh water used for potable drinking water

on boats/ships is generally more than one hundredtimes higher in resistance than salt water. Thereforethe driving voltage (energy) available from typical

sufficient cathodic protection or DC current in thisenvironment. Where corrosion protection isrequired in fresh water tanks and systems, it isnormal to use Magnesium anodes.

Warning: Magnesium anodes should NEVER BEUSED in salt-water environments without seekingprofessional advice.

3.3 Engines Most marine engine manufacturers install small

Zinc alloy anodes inside the cooling jackets of saltwater cooling systems. These are present tominimise any corrosion damage to the metallic

Zinc or Aluminium anodes is too low to provide

10

internal surfaces of these components. Due to theactive degradation of these small anodes in highflow conditions, they should be checked regularlyand replaced as necessary.

3.4 Stainless Steel The corrosion resistance of stainless steel is

primarily provided by the formation of a protectiveoxide layer on the surface of the stainless steel bythe addition of alloying elements such as nickel andchromium. If the oxide layer is depleted orremoved, the stainless steel can then be subject tolocalised corrosion. Marine grade stainless steelscan corrode if used or installed in the wrongenvironment.

There are some grades of alloy in stainless steelthat have better corrosion resistance than others. Forexample, Type 304 stainless exhibits good corrosionresistance in many atmospheric situations, howevertypes 316 and 316L stainless have much greatercorrosion resistance and are therefore more suitablefor corrosion resistance service in marineenvironments.

+-

++-

-

3.5 Welding Procedure in a MarineEnvironment

Seawater is extremely low in electricalresistivity. If any AC or DC Arc, Mig or Tigwelding is undertaken whilst the vessel is in thewater, it is essential that the welder’s earth belocated immediately adjacent to the job.

Any other location may cause stray currentcorrosion (at the rate of 10Kg /amp/year).

3.6 Marinas - Shore PowerMarinas normally provide 240VAC as a common

power supply and Multiple Earth Neutral (MEN)system. If this MEN shore power is connected to anumber of vessels, then effectively all vesselsconnected to that power system are interconnectedto the main MEN power earth grid on shore.

Therefore it is possible for a vessel to beadversely effected whilst another vessel will benefitby the connection. Alternatively, all vesselsconnected to the MEN power earthing system mightbecome more anodic relative to the copper earth onshore. This may result in early deterioration ofanodes or accelerated corrosion or loss of cathodicprotection from the sacrificial anodes fitted to theindividual hulls.

Severe pitting of marine grade stainless steelpropeller shaft - stern tube section.

l

l

l

l

l

11

No common rule applies to this type of problemand each would require individual consideration.The problem with moored metallic hulls can bereduced or eliminated by the installation of agalvanic isolation device or the provision ofisolating transformers between the ship and shorepower supply. Often the suspension of additionalanodes (attached and earthed to the hull) at themooring point can provide an economical solution.

3.7 Bonding And Electrical Continuity – BoltOn Anodes

It is often assumed that the propeller shaft andhence the propeller, are bonded through the gearboxto the engine and to other earthed structures orfittings on the vessel. This is often true when thevessel is sitting idle at a mooring. Howeverexperience has shown that once shafts and gearsstart moving, there is sufficient resistance across thelubricated moving parts to cause a galvanicdisconnection or isolation between the hull and themoving parts.

If electrical continuity is deemed necessarybetween the hull and shafts and propellers, it isbetter to make allowance to directly bond suchfittings to the hull or other conductors. In caseswhere the gearbox does not provide electricalcontinuity, then bonding of the shaft to a metallichull or engine can be achieved by utilising aslipring and soft copper/carbon contact brush kit,which is then connected from the hull to the shaft.

Similar problems have been observed with somerudder assemblies where the pintle can becomeisolated. A flexible bond cable from the rudderstock to the hull plating usually overcomes thisproblem.

Skin fittings can be effectively isolated from theengine by using non-conductive plastic hoses in lieuof metallic piping if necessary.

Very little can be done to isolate instrumentationeffectively. However, double insulated wire power

vessels.Should electrical earthing / bonding be

considered necessary, then a continuous negativeloop earth is recommended where all earthing isconnected to the negative loop. The use of directmultiple earthing to many points on any hull wiringsystem is generally considered to be very badpractice.

SECTION 4: ANODE ALLOY GROUPS ANDAPPLICATIONS

4.1 Magnesium Alloy AnodesMagnesium Anodes have a high negative driving

potential which makes them suitable for theprotection of steel structures where the environmenthas a high resistivity, such as in soil and fresh water.

Magnesium Anodes are used extensively for theprotection of buried pipelines and also in hot andcold potable water applications. Their corrosion by-products are generally considered non-toxic.Magnesium anodes are generally never used in asalt water environment as they can cause disbandingor removal of paint on wetted surface areas.

4.2 Zinc Alloy AnodesZinc alloy anodes have been used for many years

as a most reliable and economic means of providingcathodic protection to the hulls of the world’s steelhulled boats and ships. With the changes in

shown distinct improvements in anode applicationsfor marine use in sea water. However because ofthe universal benefits of being able to operate in seawater and fresh waters, Zinc anodes remain verypopular in the marine and boating industry.

Large marine structures which requireconsiderable anode mass for cathodic protection,

alloys over Zinc alloy anodes. For most small

alloys may be marginal.Zinc anodes are widely used in marine

environments. However in the right geometry, Zincanodes, in conjunction with a very good hullcoating system, can provide sufficient output toprotect steel in higher resistivity environments suchas some tidal fresh water estuaries.

It is important to note that at temperatures inexcess of 50ºC, hard non-saline waters (such assome fresh water cooling systems) may cause thepolarity of a Zinc anode/steel couple to reverse.That is, the steel may become anodic to Zinc andcorrode at a rate more rapidly than existed prior tothe installation of the anode.

Seek the advice of a corrosion engineer if youexpect to experience these conditions.

technology in recent years, Aluminium alloys have

will economically justify the use of Aluminium

vessels, the benefits between Zinc and Aluminium

systems are preferable on steel or Aluminium

12

4.3

to marine applications.

anodes are more efficient than the zinc anode alloy,which can provide performance and lifetimebenefits of the anode protection system. This resultsin more protection in the same anode sizes due to

Typical uses include applications such as shiphulls, salt water ballast tanks, offshore structures,steel wharf piling and submerged (offshore)pipelines.

“Off-shore” aluminium alloy anodes.

Cross sectional cut of aluminium alloy anodeshowing anode to steel-core bonding.

Wharf steel sheet piling.

Aluminium alloy anodesThe use of aluminium anodes is generally limited

The driving potential of aluminium anodes isslightly higher than zinc anodes. Aluminium alloy

the corrosion efficiency of the aluminium alloys.

13

Anode Type Part No Overall Anode Anode Anode Strap Strap Other Insert Nett Wt Gross Wt.Length Length Width Depth Width Thick. Type Kg.Approx Kg. ApproxA B C D E F G

CDZ1-66-1S 275 155 155 25 25 3 Galvanised steel strap 4.05 4.20




CDZ2-63-1.60S 215 150 65 40 20 3 Galvanised steel strap 2.30 2.40c/w 2 holes@ 185 centres



CDZ2-52-15S 195 125 50 40 25 3 Galvanised steel strap 0.90 1.00c/w 2 slotted holes@ 135 centres

A

B

D F

E C

ZINC ALLOY WELD-ON BOLT-ON BLOCK ANODESTo suit Commercial, pleasure craft, buoys, pylons, lobster, cray, crab pots and seachests. See also Bolt-On Zinc Alloy Anode page 14, 15, 21 and 22.

Measurements in millimetres

THE "BARRA" Zinc Alloy Anode

For the added protection of moored vessels where the problem of stray current exists, or where extra protection is needed.The Barra Anode comes complete with 3 metres of plastic coated steel cable and clip.

3.30 kgsClip to grounding strap where possible or wire all itemsas shown with copper wire and clip to wire

Clip to bolt on outdrive

Available with marine grade aluminium insert straps for attachment to aluminium alloy hulls.NOTE: see Page 8 Section 2.1, Steel and Aluminium Vessels.

Anode Type Part No Overall Anode Anode Anode Strap Strap Other Insert Type Net Wt. Gross Wt.Length Length Width Depth Width Thick. Kg. ApproxA B C D E F G

CDZ2-52-15S 195 125 50 40 25 3 Galvanised steel strap 0.90 1.00c/w 2 slotted holes @ 135 centres

CDZ1-66-1 -- 155 155 25 -- -- -- -- 4.00

CDZ1-66-1H -- 155 155 25 -- -- Single galvanised steel pipe 3.97 4.0020mm NB

CDZ2-63-1 -- 160 80 25 -- -- -- 2.00

CDZ2-63-1H -- 160 80 25 -- -- Single galvanised steel pipe 1.97 2.0020mm NB

CDZ2-64-75 -- 150 100 20 -- -- -- 2.00

CDZ2-43-1 -- 100 75 25 -- -- -- 1.40

CDZ2-415-1 -- 100 38 25 -- -- -- 0.70

CDZ2-515-1 -- 125 38 25 -- -- -- 0.80

CDZ2-1611 -- 400 27 27 -- -- -- 1.90

CDZ2-63-1.60S 215 150 65 40 20 3 Galvanised steel strap 2.30 2.40c/w 2 holes @ 185 centres

CDZ2-63-1.50H -- 150 75 35 -- -- Steel insert plate 1.90 2.002 slotted holes 70mm centres

CDZ2-63-75H -- 145 68 18 -- -- Steel insert plate 0.90 1.002 slotted holes 75mm centres


CDZ2-84-75H -- 200 100 20 -- -- Steel insert plate 2.40 2.602 slotted holes 110mm centre

14


ZINC ALLOY BOLT-ON BLOCK ANODESSee also ZINC ALLOY LARGE BOLT-ON BLOCK ANODES on Page 22To suit Commercial, pleasure craft, buoys, pylons, lobster, cray, crab pots and seachests.

B

C

D

G

15

ode Type Part No Overall Anode Anode Anode Strap Strap Other Insert Type Net Wt. Gross Wt.Length Length Width Depth Width Thick. Kg. ApproxA B C D E F G


CDZ2-84-1.37H -- 200 100 35 -- -- Steel insert plate2 slotted holes 110mm centres

CDZ7-350-19H -- 90 90 19 -- -- Galvanised steel pipe insert 0.88 0.9015mm N/B



Large Steel insert plate 3.20 3.40CDZ1-126-500H -- 300 150 13 -- -- 2 slotted holes

45 - 230 mm centres

-- 150 150 13 -- -- Galvanised steel insert plate 1.60 1.80Small 2 slotted holesCDZ1-66-500H 75 mm centres

ZINC ALLOY BOLT-ON BLOCK ANODES ContinuedSee also ZINC ALLOY LARGE BOLT-ON BLOCK ANODES Page 22To suit commercial, pleasure craft, buoys, pylons, lobster, cray, crab pots and seachests.


Zinc alloy bolt-on anodes.

4.10 4.30

Divers Dream

Divers Dream

CDZ3-3.5 -- 90 39 24 -- -- -- -- 0.30

CDZ3-5 -- 127 60 30 -- -- -- -- 0.90

CDZ3-7-1.7 kg -- 165 80 35 -- -- -- -- 1.70

CDZ3-7-2.1 kg -- 170 80 40 -- -- -- -- 2.10

CDZ3-3.5H -- 90 38 18 -- -- 2 x 6 mm Ø -- 0.20Centres = 32mm

CDZ3-5H -- 125 60 28 -- -- 2 x 6 mm Ø -- 0.70Centres = 40mm

CDZ3-345C -- 345 130 70 -- -- Steel plate insert c/w 11.45 11.502/20mm holes @ 160 centres

16

Anode Type Part No Overall Anode Anode Anode Strap Strap Other Insert Nett Wt Gross Wt.Length Length Width Depth Width Thick. Type Kg.Approx Kg. ApproxA B C D E F G

CDZ3-5S 275 127 60 28 25 3 Galvanised steel strap 0.85 1.00

CDZ3-7S1.7 kg 290 180 80 35 25 3 Galvanised steel strap 1.55 1.70

CDZ3-7S2.2 kg 290 180 80 40 25 3 Galvanised steel strap 2.05 2.20

CDZ3-16S 700 410 205 110 50 5 Steel strap 34.0 35.0


CDZ3-6B -- 155 120 60 -- -- 3/8 UNC S/S Stud 3.98 4.00

CDZ3-345S 500 345 130 45 40 5 Steel strap 12.30 13.00

CDZ3-8S 190 -- 85 Ø 45 25 3 Galvanised steel strap 1.30 1.40



ZINC ALLOY WELD-ON / BOLT-ON TEAR DROP ANODES To suit commercial & pleasure craft, where streamlining is required.

ZINC ALLOY BOLT-ON TEAR DROP ANODES To suit commercial & pleasure craft, where streamlining is required.

A

F

B

D

E

C

CB

DC


See page 22 for larger type bolt-on anodes.

Available with marine grade aluminium straps for attachment to aluminium alloy hulls. NOTE: see Section 2.1 Page 8 on Steel and Aluminium Vessels.

17

Anode Type Part No Anode Anode Anode Gross Wt. To SuitI.D. O.D. Length Kg. Approx Shaft SizeA B C

CDZ4-75 19.05 58 52 0.55 3/4”

CDZ4-87 22.09 58 52 0.50 7/8”

CDZ4-100 25.40 58 52 0.47 1”

CDZ4-112 28.44 70 64 1.00 1 1/8”

CDZ4-125 31.75 70 64 0.95 1 1/4”

CDZ4-137 34.80 70 64 0.90 1 3/8”

CDZ4-150 38.10 70 64 0.80 1 1/2”

CDZ4-175 44.45 84 68 1.15 1 3/4”

CDZ4-200 50.80 84 68 1.20 2”

CDZ4-200HD 50.80 103 120 4.60 2”

CDZ4-225 57.15 103 120 4.30 2 1/4”

CDZ4-250 63.50 103 120 3.70 2 1/2”

CDZ4-275 69.85 116 130 5.60 2 3/4”

CDZ4-300 76.20 116 130 5.00 3”

CDZ4-325 82.55 138 164 9.75 3 1/4”

CDZ4-350 88.90 138 164 8.75 3 1/2”

CDZ4-375 95.25 168 188 18.50 3 3/4”

CDZ4-400 101.60 168 188 17.25 4”

CDZ4-450 114.30 168 188 14.30 4 1/2”

CDZ4-500 127.00 230 110 21.00 5”

ZINC ALLOY SHAFT ANODES ASSEMBLED WITH STAINLESS STEEL SOCKET HEAD CAP SCREWSTo suit Imperial propeller shafts. *CDZ4-75 through to CDZ4-200 are pressure diecast for a superb finish.

A

B

C

A

B

OTHER SIZESAVAILABLE TO SUITSHAFT DIAMETERS UPTO 230mm.


The CDQ range of Zinc Alloy shaft anodes aredesigned to remain securely fastened to thepropeller shaft by a unique fastening system.The anode design is such that it stops salt wateringression of the mounting screws. This fasteningsystem is virtually corrosion resistant for the lifeof the anode under normal circumstances.Further fastening devices such as steel strapsaround the anode are not required.

18

ZINC ALLOY DONUT SHAFT ANODES To suit Imperial propeller shafts where space is limited. Pressure diecast for a superb finish.

Anode Type Part No Anode Anode Anode Gross Wt. To SuitI.D. O.D. Length Kg. Approx Shaft SizeA B C

CDZ4-75D 19.05 54 25 0.30 3/4”

CDZ4-87D 22.09 54 25 0.30 7/8”

CDZ4-100D 25.40 64 33 0.53 1”

CDZ4-112D 28.44 64 33 0.48 1 1/8”

CDZ4-125D 31.75 64 33 0.45 1 1/4”

CDZ4-137D 34.80 64 33 0.68 1 3/8”

CDZ4-150D 38.10 76 33 0.65 1 1/2”

CDZ4-175D 44.45 89 35 1.44 1 3/4”

CDZ4-200D 51.80 89 35 1.30 2”

ZINC ALLOY SHAFT ANODES ASSEMBLED WITH STAINLESS STEEL SOCKET HEAD CAP SCREWSTo suit Metric propeller shafts. Pressure diecast for a superb finish.

Anode Type Part No Anode Anode Anode Gross Wt. To suit metricI.D. O.D. Length Kg. Approx Shaft SizeA B C

CDZ4-20M 20 58 52 0.55 20

CDZ4-25M 25 58 52 0.50 25

CDZ4-30M 30 70 64 1.00 30

CDZ4-35M 35 70 64 1.00 35

CDZ4-40M 40 84 68 1.20 40

CDZ4-50M 50 84 68 1.20 50

A

B

C

CB

A

A

B



Anode Type Part No Anode Anode Gross Wt.Dia. Length. Kg.A B

CDZ5-375-12 10 300 0.17CDZ5-375-16 10 400 0.22CDZ5-375-40 10 1000 0.56CDZ5-500-12 13 300 0.27CDZ5-500-16 13 400 0.38CDZ5-500-40 13 1000 0.95CDZ5-625-12 16 300 0.44CDZ5-625-16 16 400 0.57CDZ5-625-40 16 1000 1.44CDZ5-750-12 19 300 0.59CDZ5-750-16 19 400 0.81CDZ5-750-40 19 1000 2.02CDZ5-875-12 22 300 0.82CDZ5-875-16 22 400 1.09CDZ5-875-40 22 1000 2.71CDZ5-1.00-12 25 300 1.05CDZ5-1.00-16 25 400 1.40CDZ5-1.00-40 25 1000 3.50

Anode Type Part No Anode Anode Gross Wt.Dia. Length. Kg.A B

CDZ5-1.187-12 30 300 1.45CDZ5-1.250-12 32 300 1.71CDZ5-1.375-12 35 300 2.00CDZ5-1.500-12 38 300 2.48CDZ5-2.000-12 51 300 4.45CDZ5-2.350-12 60 300 6.00CDZ5-3.00-12 76 300 10.00CDZ5-4.00-12 102 300 17.78

19

Anode Type Part No Anode Anode Hole Hole Thru Hole Gross Wt.Dia. Depth Recess Dia. Recess Depth Dia. Kg.A B C D E

CDZ6-70 70 19 15 10 8.00 0.50 PRCDZ6-90 90 20 15 10 10.00 0.85 PRCDZ6-130 125 22 22 10 8.00 2.15 PR

ZINC ALLOY RUDDER ANODES To suit rudders, keels, and transoms.

B

A

D

E

C

CAST ZINC ALLOY ROD ANODES To suit water jackets, pumps, heat exchangers, stock material for marine engine anodes.

A

B

B

A

EXTRUDED ZINC ALLOY ROD ANODESTo suit water jackets, pumps, heat exchangers, stock material for marine engine anodes.




The benetits of extruded zincrod against cast are:1. Free of casting defects 2. Higher tensile strength3. Better machining qualities

ZINC ALLOY POT ANODES To suit lobster, cray and crab pots.

Part No Overall Anode Anode Anode Exposed Stud Other Insert Nett Wt. Gross Wt.Length Length Width Depth Length Type Kg. Kg.

A B C D EBolt Size

CDZ6C-40B Type 1 -- -- 40 40 25 MIO S/S -- 0.35

CDZ6C-40B Type 2 -- -- 40 75 25 MIO S/S -- 0.65

CDZ6C-50B Type 1 -- -- 50 30 25 5/16 UNC S/S -- 0.35

CDZ6C-50B Type 2 -- -- 50 25 25 MIO S/S -- 0.32

CDZ6C-50B Type 3 -- -- 50 75 25 MIO S/S -- 0.95

CDZ6C-75SB Short Bolt -- 75 30 25 5/16 UNC S/S -- 0.80

CDZ6C-75LB Long Bolt -- 75 30 50 5/16 UNC S/S -- 0.85

CDZ6C-75 Plain -- -- 75 30 -- -- -- 0.80

Part No Overall Anode Anode Anode Strap Strap Other Insert Nett Wt. Gross Wt.Length Length Width Depth Width Thick Type Kg. Kg.

A B C D E F

CDZ7-211 200 50 26 26 -- -- 3mm ø Gal Wire -- 0.25

CDZ7-411 300 100 27 27 -- -- 3mm ø Gal Wire -- 0.50

CDZ7-811 400 200 27 27 -- -- 3mm ø Gal Wire -- 1.00

CDZ7-1611 600 400 27 27 -- -- 3mm ø Gal Wire -- 1.90

CDZ7-91515 220 40 38 -- -- 3mm ø Gal Wire -- 2.10

CDZ7-350-19H -- 90 90 19 -- -- Gal Pipe insert 15 N.B. -- 0.90



ZINC ALLOY CONDENSER ANODES To suit condensers.

C B

A

D

B

D

C

20



øD

C

DE

500


A B C D E F G

CDZ8-123-150S 450 300 80 40 25 5 Steel Strap 5.50 6.00

CDZ8-123-200S 450 300 80 50 25 5 Steel Strap 6.85 7.30

CDZ8-10S 405 250 125 35 32 5 Steel Strap 6.50 7.00

CDZ8-12-125S 510 305 145 32 40 5 Steel Strap 7.70 8.50

CDZ8-12-150S 510 305 150 38 40 5 Steel Strap 9.20 10.00

CDZ8-12-175S 510 305 150 44 40 5 Steel Strap 11.20 12.00

CDZ8-12-200S 510 305 150 45 40 5 Steel Strap 12.20 13.00

CDZ8-14-200S 500 350 150 50 40 5 Steel Strap 14.20 15.00

CDZ8-18S 560 440 90 40 32 5 Steel Strap 8.00 8.70

CDZ8-124-125S 450 300 100 32 32 5 Steel Strap 5.75 7.00

CDZ8-124-200S 450 300 100 50 32 5 Steel Strap 9.95 11.20

CDZ8-20-175S 800 515 130 45 40 5 Steel Strap 16.75 18.00

CDZ8-23S

CDZ8-20-200S 800 515 130 50 40 5 Steel Strap 18.75 20.00

CDZ8-20-240S 800 515 130 60 40 5 Steel Strap 22.75 24.00

CDZ8-22-200S 800 540 127 55 40 5 Steel Strap 20.75 22.00

CDZ8-22-250S 800 546 127 64 40 5 Steel Strap 25.75 27.00

CDZ8-24-200S 800 605 132 50 40 5 Steel Strap 24.75 26.00

CDZ8-24-250S 800 615 132 75 40 5 Steel Strap 33.75 35.00

CDZ3-345S 500 345 130 45 40 5 Steel Strap 12.30 13.00

CDZ3-16S 700 410 205 110 40 5 Steel Strap 34.00 35.00

ZINC ALLOY LARGE WELD-ON / BOLT-ON ANODESTo suit ship hulls, rudders, buoys, ballast tanks, bow thruster tubes, heat exchangers, piers, pylons and sea chests.Available with marine grade aluminium insert straps for attachment to aluminiun alloy hulls. See also Weld-On/Bolt-OnZinc Alloy anodes pages 13,14,15 and 16.

21

A

B

D F

E CMeasurements in millimetres

Replaced by CDZ8-20-175S

22

ZINC ALLOY LARGE BOLT-ON ANODESSEE ALSO ZINC ALLOY BOLT-ON ANODES pages 13 to 16 To suit commercial, pleasure craft, buoys, pylons, lobster, cray, crab pots and seachests.

Part No Overall Anode Anode Anode Strap Strap Other Insert type Nett Gross Length Length Length Width Depth Width Thickness Wt.

A B C D E F G Kg. Kg.

CDZ8-123-150H - 300 80 40 - - Steel plate insert 4.50 4.702 slotted holes @ 200mm centres

CDZ8-123-200H - 300 80 50 - - Steel plate insert 6.20 6.402 slotted holes @ 200mm centres

CDZ8-10H Type 1 - 250 125 40 - - Steel Insert plate 6.25 6.502 slotted holes @ 150mm centres

CDZ8-10H Type 2 - 250 125 40 - - Steel Insert plate 2 slotted holes @ 110 mm centres 6.25 6.50

CDZ8-12-2.5-125H - 300 60 30 - - Galvanised steel insert 3.30 3.452 x13 mm @ 200 mm centres

CDZ8-126-1.25H - 305 145 32 - - Steel plate insert 7.05 7.302 x 25mm holes @ 158 mm centres

CDZ8-126-1.37H - 305 145 35 - - Steel plate insert 8.35 8.602 x 25mm holes @ 158 mm centres

CDZ8-124-2.0H - 300 100 45 - - Steel plate insert 8.35 8.602 slotted holes @ 150mm centres

CDZ8-18H - 440 90 40 - - Steel plate insert 7.15 7.202/ 20mm holes @ 234 mm centres

Riviera Replacement Sml. 400 200 145 30 25 5 Galvanised steel strap 5.00 5.40CDZ8-86S c/w 2 holes @ 340 mm centresRiviera Replacement Lge. 500 300 150 35 25 5 Galvanised steel strap 8.40 8.90CDZ8-126S c/w 2 holes @ 440 mm centresCDZ3-345C -- 345 130 70 -- -- Steel plate insert 11.45 11.50

2/ 20mm holes @ 160 mm centres

OTHER SHAPES, SIZES AND CORE CONFIGURATIONS ARE AVAILABLE ON REQUEST

B

C

D

G

Zinc Alloy String Anode

ZINC ALLOY STRING ANODESFor the protection of double bottom tanks of ships, mooring chains, and the temporary protection of underground storage tanks and pipelines.

Zinc alloy anodes cast onto continuous lengths of stainless steelwire rope.Number of anodes per Metre = 3Gross weight per metre = 3.10 kgs.Insert details2.40 mm diameter, 304 grade stainless steel wire, Tails protruding 600 mm from end of anode,Method of attachment: eyebolt or "G" clamp.


C B

A

D G

23

ZINC ALLOY- TANK AND INDUSTRIAL ANODES


A B C D E F G Approx. Approx.

CDZ8-18S 560 440 90 40 32 5 8.00 8.70CDZ8-30S 7kg 950 750 38 38 -- -- 12mm round bar 6.15 7.00CDZ8-48S 11kg 1500 1200 38 38 -- -- 12mm round bar 9.68 11.00CDZ8-60S 14kg 1700 1500 38 38 -- -- 12mm round bar 12.50 14.00CDZ8-30S 13kg 950 750 50 50 -- -- 12mm round bar 12.65 13.50CDZ8-48S 22kg 1500 1200 50 50 -- -- 12mm round bar 21.18 21.50CDZ8-60S 27kg 1700 1500 50 50 -- -- 12mm round bar 25.20 26.70CDZ8-30S 23kg 950 750 65 65 -- -- 16mm round bar 21.20 22.70CDZ8-48S 36kg 1500 1200 65 65 -- -- 16mm round bar 34.05 36.40CDZ8-60S 45kg 1700 1500 65 65 -- -- 16mm round bar 42.33 45.00CDZ8-40S 1400 1000 100 60 32 5 -- 33.25 35.00CDZ8-30S 29kg 950 750 75 75 -- -- 16mm round bar 27.50 29.00CDZ8-48S 47kg 1500 1200 75 75 -- -- 16mm round bar 44.65 47.00CDZ8-60S 59kg 1700 1500 75 75 -- -- 16mm round bar 56.33 59.00CDZ8-30S 38kg 950 750 85 85 -- -- 16mm round bar 36.50 38.00CDZ8-48S 61kg 1500 1200 85 85 -- -- 16mm round bar 58.65 61.00CDZ8-60S 76kg 1700 1500 85 85 -- -- 16mm round bar 67.33 76.00CDZ8-48S 86kg 1500 1200 100 100 -- -- 25mm round bar 80.26 86.00CDZ8-60S 107kg 1700 1500 100 100 -- -- 25mm round bar 100.49 107.00CDZ8-95S 172kg 2900 2400 100 100 -- -- 25mm round bar 169.90 172.00CDZ8-48S 111kg 1500 1200 100 130 -- -- 25mm round bar 105.15 111.50CDZ8-60S 140kg 2000 1500 100 130 -- -- 25mm round bar 132.34 140.00CDZ8-95S 223kg 2900 2400 100 130 -- -- 25mm round bar 211.50 222.60CDZ8-48S 192kg 1500 1200 150 150 -- -- 25mm round bar 186.26 192.00CDZ8-60S 241kg 2000 1500 150 150 -- -- 25mm round bar 233.34 241.00CDZ8-95S 384kg 2900 2400 150 150 -- -- 25mm round bar 372.90 384.00CDZ8-48S 231kg 1500 1200 150 180 -- -- 25mm round bar 224.24 230.50CDZ8-60S 289kg 2000 1500 150 180 -- -- 25mm round bar 280.84 288.50CDZ8-95S 462kg 2900 2400 150 180 -- -- 25mm round bar 454.40 461.50CDZ8-30S 163kg 950 750 175 175 -- -- 25mm round bar 159.66 163.30CDZ8-48S 261kg 1500 1200 175 175 -- -- 25mm round bar 255.26 261.00CDZ8-60S 327kg 2000 1500 175 175 -- -- 25mm round bar 319.34 327.00CDZ8-30S 213kg 950 750 200 200 -- -- 25mm round bar 227.46 213.10CDZ8-48S 341kg 1500 1200 200 200 -- -- 25mm round bar 335.26 341.00CDZ8-60S 427kg 2000 1500 200 200 -- -- 25mm round bar 418.34 426.00CDZ8-30S 333kg 950 750 250 250 -- -- 25mm round bar 328.86 332.50CDZ8-48S 532kg 1500 1200 250 250 -- -- 25mm round bar 526.26 532.00CDZ8-60S 665kg 2000 1500 250 250 -- -- 25mm round bar 657.74 665.40

TYPICAL STEEL INSERT CONFIGURATIONS

Round bar.Straight with welded flat tabs for bolt ons.Round bar.Straight both ends. Round bar.Straight one end only.Round bar.Single crank.Round bar.Double crank flush mount.

Round bar.Double crank stand-off.

Flat BarWeld on.Flat Bar with punched holes for bolt on.Pipe Insert.Straight.Pipe Insert.Bent stand off.

Flat Bar.Double cranked flush mount,weld on or bolt on.Pipe Insert.Bent, flush mount.Pipe Insert.Bent, integral mount.



ZINC ALLOY/ ALUMINIUM ALLOY ENGINE ANODES To suit Aifo, Bukh, Castoldi, Caterpillar, Detroit, G.M., Hamilton Jet, Mercury, O.M.C., Sidepower, Suzuki, Volvo, Vetus, Yamaha and Yanmar.

24

Part No Description

CDZ9-1 Yanmar Zinc Anode Replaces Genuine P/No 27210-200300 M8 Zinc plated Steel Insert

CDZ9-2 Bukh Zinc Anode Replaces Genuine P/No B00E0450 M5 Thread Insert

CDZ9-3 Cat Diesel Zinc Anode Replaces Genuine P/No 6L2283 10mm Ø x 70mm O/A length 1/4 UNC Thread

CDZ9-4 GM Diesel Zinc Anode /Universal Application Replaces Genuine P/No 8517480 16mm Ø x 64 mm 7/16 UNC thread

CDZ9-5 Cat Diesel Zinc Anode Replaces Genuine P/No 6L2288 16mm Ø x 78mm O/A length 3/8 UNC thread

CDZ9-6 G. M. Diesel Zinc Anode Replaces Genuine P/No 8515851 19mm Ø x 100mm 5/8 UNC thread

CDZ9-7 Yanmar Engine Zinc Anode Replaces Genuine P/No 27210-200200 M8 Zinc plated Steel Insert

CDZ9-8 Honda Cavitation Plate Zinc Anode Replaces Genuine P/No 41106-935

CDZ9-8 OMC Cavitation Plate Zinc Anode Replaces Genuine P/No 123009 (threaded)

Replaces Genuine P/No 327606 (unthreaded)

CDZ9-9 G. M. Diesel Zinc Anode Replaces Genuine P/No 8515842 19mm Ø x 58mm O/A Length 5/8 U.N.C. thread

CDZ9-10 G. M. Oil cooler Zinc Anode Replaces Genuine P/No T.B.A. 10mm Ø x 68mm O/A Length 3/8 U.N.C. thread

CDZ9-11 Volvo Penta Zinc Anode Replaces Genuine P/No 838929

CDZ9-12 Outdrive Ring Zinc Anode - Volvo Penta 280-290 SP Replaces Genuine P/No 839388

Replaces Genuine P/No 875815-3

CDZ9-13 Outdrive Ring Zinc Anode - Volvo Penta 120S Replaces Genuine P/No 851983

CDZ9-14 Outdrive Bar Zinc Anode - Volvo Penta 290 Replaces Genuine P/No 852835

CDZ9-15 Outdrive Ring Zinc Anode - Volvo Penta D.P. Replaces Genuine P/No 875821-1

CDZ9-16 Outdrive Bar Zinc Anode - Volvo Penta 200 - 280 Replaces Genuine P/No 832598

CDZ9-17 Transom Bar Zinc Anode - OMC / Johnson Evinrude Replaces Genuine P/No 367

CDZ9-18 Outboard Block Zinc Anode - Medium - OMC / Johnson Evinrude Replaces Genuine P/No 392123

CDZ9-19 Outboard Cube Zinc Anode - OMC / Johnson Evinrude Replaces Genuine P/No 393023

CDZ9-20 Trim Tab Zinc Anode Long Leg - Mercury Replaces Genuine P/No 34127

CDA9-20 Trim Tab Aluminium Anode Long Leg - Mercury Replaces Genuine P/No 34127

25

CDZ9-21 Trim Tab Zinc Anode Short Leg - Mercury Replaces Genuine P/No 31640

CDA9-21 Trim Tab Aluminium Anode Short Leg - Mercury Replaces Genuine P/No 31640

CDZ9-21 Trim Tab Zinc Anode - Honda Replaces Genuine P/No 41107ZWI-0032A

CDZ9-22 Plate Zinc Anode ( Square ) - Mercury Replaces Genuine P/No 34762

CDA9-22 Plate Auminium Anode ( Square ) - Mercury Replaces Genuine P/No 34762

CDZ9-23 Nut Zinc Anode - Mercury Replaces Genuine P/No 55989

CDA9-23 Nut Aluminium Anode - Mercury Replaces Genuine P/No 55989

CDZ9-24 Racing Tab Zinc Anode - Mercury Replaces Genuine P/No 46399

CDA9-24 Racing Tab Aluminium Anode - Mercury Replaces Genuine P/No 46399

CDZ9-25 Plate ( Round ) Zinc Anode - Mercury Replaces Genuine P/No 76214

CDA9-25 Plate ( Round ) Aluminium Anode - Mercury Replaces Genuine P/No 76214-5

CDZ9-26 Waffle Plate Zinc Anode - Mercury Replaces Genuine P/No 43396

CDA9-26 Waffle Plate Aluminium Anode - Mercury Replaces Genuine P/No 43396

CDZ9-27 OMC Cobra Zinc Anode Replaces Genuine P/No 984513

CDZ9-28 Caterpillar Zinc 3208 Engine Anode Suits 3208 Series Replaces Genuine P/No 6L2016

CDZ9-29 Caterpillar Aircond. Condenser Zinc Anode 16mm Ø x 30 mm 1/4 Whit. int. thread

CDZ9-30 Volvo Sail Drive 110S Zinc Anode Replaces Genuine P/No 875812

CDZ9-31 Volvo Out Drive Ring 250 - 270 Zinc Anode Replaces Genuine P/No V17/875805-4

CDZ9-32 Combination Includes D.R. Brass Plug & Zinc Pencil Anode 9.5mm Ø x 44 mm Exposed length (Plug- 1/4 B.S.P.T. thread)

CDZ9-33 Zinc Pencil Anode 9.5mm Ø x 54 mm O/A length 5/16 U. N. C. thread

CDZ9-34 Combination Includes D.R. Brass Plug & Zinc Pencil Anode 12.7 mm Ø x 52 mm Exposed length (Plug- 3/8 B.S.P.T. thread)

CDZ9-35 Zinc Pencil Anode 12.7 mm Ø x 62 mm O/A Length 3/8 UNC thread

CDZ9-3615.8 mm Ø x 52 mm Exposed Length (Plug 1/2 B.S.P.T. thread)

ZINC ALLOY / ALUMINIUM ALLOY ENGINE ANODES (Continued)

22mm Ø x 30 mm 5/8 UNF thread

Combination Includes D.R. Brass Plug & Zinc Pencil AnodeCummins Diesel / Universal Application /

Replaces genuine P/No 68241

ZINC ALLOY / ALUMINIUM ALLOY ENGINE ANODES (Continued)

CDZ9-37 Combination Includes D.R. Brass Plug & Zinc Pencil Anode 19.0 mm Ø x 52 mm Exposed Length (Plug - 3/4 B.S.P.T. thread)

CDZ9-38 Zinc Pencil Anode 19.0 mm Ø x 65 mm O/A Length 1/2 U. N. C. thread

CDZ9-39 Volvo Engine Zinc Anode Replaces Genuine P/No 823661-4

CDZ9-40 Yamaha Outboard Trim Tab LH Gearbox Rotation Zinc Anode Replaces Genuine P/No 6K1-45371-00

CDZ9-41 Yamaha Outboard Trim Tab RH Gearbox Rotation Zinc Anode Replaces Genuine P/No 6E5-45371-01

CDZ9-42 Yamaha Outboard Trim Tab Zinc Anode Replaces Genuine P/No 688-45371-02

CDZ9-43 Yamaha Outboard Trim Tab Zinc Anode Replaces Genuine P/No 6J9-45371-00

CDZ9-44 Honda Trim Tab Zinc Anode Replaces Genuine P/No 441107-ZV5-000

CDZ9-44 Yamaha Outboard Trim Tab Zinc Anode Replaces Genuine P/No 664-45371-01

CDZ9-45 Yamaha Outboard Block Zinc Anode Replaces Genuine P/No 6E5-45251-00

CDZ9-46 Yamaha Outboard Button Zinc Anode Replaces Genuine P/No 688-45251-01

CDZ9-47 Yamaha Bracket Zinc Anode Replaces Genuine P/No 6G5-45251-01

CDZ9-48 Yamaha Bar Zinc Anode Replaces Genuine P/No 6H1-45251-02

CDZ9-49 Suzuki Outboard Block Zinc Anode Replaces Genuine P/No 55320-95310

CDZ9-50 Suzuki Outboard Trim Tab Zinc Anode Replaces Genuine P/No 55125-96310

CDZ9-51 Suzuki Outboard Trim Tab Zinc Anode Replaces Genuine P/No 55125-87D00

CDZ9-52 Mercury Cooling Cover Zinc Anode Replaces Genuine P/No 43994

CDA9-52B Mercury Cooling Cover Aluminium Anode Replaces Genuine P/No 821631

CDZ9-53 Mercury Block Zinc Anode Replaces Genuine P/No 826134

CDA9-53 Mercury Block Aluminium Anode Replaces Genuine P/No 826134

CDZ9-53 Honda Block Zinc Anode Replaces Genuine P/No 41109-ZW1-003

CDZ9-54 Mercury Alpha Zinc Anode Replaces Genuine P/No 806189

CDA9-54 Mercury Alpha Aluminium Anode Replaces Genuine P/No 806189

26

CDZ9-55 O. M. C. Cobra Zinc Anode Replaces Genuine P/No 984547

CDZ9-56 O. M. C. Cobra Zinc Anode Replaces Genuine P/No 983952

CDZ9-57 O. M. C. Block Zinc Anode Replaces Genuine P/No 431708

CDA9-57 O. M. C. Block Aluminium Anode Replaces Genuine P/No 431708

CDZ9-58 Mercury Outboard Plate Zinc Anode Replaces Genuine P/No 818298

CDA9-58 Mercury Outboard Plate Aluminium Anode Replaces Genuine P/No 818298

CDZ9-59 Mercury Alpha Cavitation Plate Zinc Anode Replaces Genuine P/No 821629

CDA9-59 Mercury Alpha Cavitation Plate Aluminium Anode Replaces Genuine P/No 821629

CDZ9-60 Mercury Bravo and Blackhawk Trim Ram Zinc Anode Replaces Genuine P/No 806190

CDA9-60 Mercury Bravo and Blackhawk Trim Ram Aluminium Anode Replaces Genuine P/No 806190

CDZ9-61 O.M.C Zinc Leg Anode Replaces Genuine P/No. C389999

CDZ9-62 Scania Engine Zinc Anode Replaces Genuine P/No. C1331818 45mm X 17mm diawith M6 Zinc Plate Stud

CDZ9-63 Zinc Pencil and Brass Plug Combination 50mm X 6mm dia Zinc Pencil with 1/8th N.P.T. D.R. Brass Plug

CDZ9-64 Zinc Pencil Anode to suit Detroit Diesel 100mm O/A Length X 19mm Dia with 1/2” U.N.C. thread

CDZ9-65 Mercury Plate Zinc Anode to suit Bravo Generation 2 Replaces Genuine Part No. 821630

CDA9-65 Mercury Plate Aluminium Anode to suit Bravo Generation 2 Replaces Genuine Part No. 821630

CDZ9-66 Replaces Genuine Part No. 806105

CDZ9-67 Caterpillar Zinc Engine Anode 50mm x 16mm Dia with 7/16th U.N.F. Thread

Replaces Caterpillar Genuine Part No. 6L3412

Yanmar Diesel Zinc Engine Anode Replaces Yanmar Part No. T.B.A.

CDZ9-68 Zinc Pencil & D.R. Brass Plug Combination 25mm Dia x 50mm Zinc Anode with 1” B.S.P.T. D.R. Plug

CDZ9-69 Zinc Pencil Anode/Universal Applications 25mm Dia x 50mm Zinc Anode

CDZ9-70 Caterpillar Engine Zinc Anode

Replaces Genuine Part No. 6L 3104

CDZ9-71 Caterpillar Engine Zinc Anode 13mm Ø x 40mm O/A Length 3/8 U.N.C. Thread

Yanmar Diesel Replaces Yanmar Genuine Part No. T.B.A.

ZINC ALLOY/ALUMINIUM ALLOY ENGINE ANODES (Continued)

27

Mercury Bearing Carrier Anode to suit Generation 2 Alpha 1

Replaces Caterpillar Genuine Part No. 6L 2281

10mm Ø x 50mm O/A Length with 1/4" U.N.C. Thread

c/w 3/4" U.N.C. Thread

28

CDZ9-72 Caterpillar Engine Zinc Anode 12.70 mm Ø x 53mm O/A Length 3/8 U.N.C. Thread


CDZ9-73 Caterpillar Engine Zinc Anode 16mm Ø x 88mm O/A Length 3/8th U.N.C. Thread


CDZ9-74 Caterpillar Engine Zinc Anode 32mm Ø x 75mm O/A Length 3/4” U.N.C. Thread

Replaces Genuine Part No. 6L2284

CDZ9-75 Caterpillar Engine Zinc Anode D.R. Brass Combination Replaces Genuine Part No. 6L3104 (CDZ9-70) & 6L2282 1/4 N.P.T. Plug

CDZ9-76 Volvo Stern Drive Zinc Anode Replaces Genuine Part No. 872793

CDZ9-77 Volvo 2 Bladed Folding Propeller Zinc Anode Replaces Genuine Part No. 852018

Kit To Suit 110-120 Series


Yanmar Diesel Replaces Genuine Part No. 119574 - 44150

CDZ9-79 Bukh Sail Drive Zinc Anode Replaces Genuine Part No. 024BUKB00E5829

Suits DV 10 Marine Engine

CDZ9-80 Yanmar Sail Drive Zinc Anode Replaces Genuine Part No. 19642002652Z



CDZ9-83 Mercruiser Zinc Engine Anode Replaces Genuine Part No. 816000

CDZ9-84 Yanmar Diesel Alternator Zinc Anode Replaces Genuine Part No. 27200 - 400400

CDZ9-85 Hamilton Jet Zinc Alloy Disc Anode Replaces Genuine Part No. 102185

CDZ9-86 Hamilton Jet Zinc Alloy Bar Anode Replaces Genuine Part No. 103359

CDZ9-87 Hamilton Jet Zinc Alloy Bar Anode Replaces Genuine Part No. 104634

CDZ9-88 Hamilton Jet Zinc Alloy Ring Anode Replaces Genuine Part No. 105447

CDZ9-89 Hamilton Jet Zinc Alloy Conical Anode Replaces Genuine Part No. 111644

c/w M8 steel stud

CDZ9-90 Hamilton Jet Zinc Alloy Oval Anode Replaces Genuine Part No. 111059

CDZ9-91 Mercury Outboard Trimtab Zinc Alloy Anode Replaces Genuine Part No. 822157 (822157T2)

to suit 25, 30, 40, 50 H/P

CDZ9-92 Detroit Cummins Engine Zinc Anode 16mm Ø x 44mm c/w 3/8 UNC thread

Replaces Genuine Part No. 8517474

CDZ9-93 Volvo 3 Bladed Folding Propeller Zinc Anode Replaces Genuine Part No. 3858399

Kit to suit 120 series late models

CDZ9-94 Aifo Engine Zinc Anode 14mm Ø X 34mm 0/A length (press fit)


29

CDZ9-95 Vetus Bow Thruster Zinc Anode Model no. 25Kgf Replaces Genuine Part No. BP 1221

CDZ9-96 Vetus Bow Thruster Zinc Anode Model no. 35, 55Kgf Replaces Genuine Part No. BP 1126

CDZ9-97 Vetus Bow Thruster Zinc Anode Model no. 75, 80, 90, 95 Kgf Replaces Genuine Part No. BP 1185

CDZ9-98 Vetus Bow Thruster Zinc Anode Model no. 130, 160Kgf Replaces Genuine Part No. BP 195

CDZ9-99 Vetus Bow Thruster Zinc Anode Model no. 23A, 50, 80Kgf Replaces Genuine Part No. BP 129

CDZ9-100 Vetus Bow Thruster Zinc Anode Model no. 220Kgf Replaces Genuine Part No. BP 1210

CDZ9-101 Side Power (Sleipner) Bow Thruster Zinc Anode Replaces Genuine Part No. 7 1190

Models - SP55Si, 55S, 75Ti, 75T/ 95Ti, 95T, 100 Hyd


Models SP125Ti, 125T, SP155Tci, 155Tc, SP200Tci, 200Tc

SP220Tc, SP240Tci, 15HP (20150), SP285Tci, 285Tc,

20HP(2200)


Models SP30, S2i, 30S, 40Si, 40S

CDZ9-104 Castoldi Jet Zinc Alloy Engine Anode Bracket -Small Replaces Genuine Part No. 542-15062-6

CDZ9-105 Castoldi Jet Zinc Alloy Engine Anode Bracket - large Replaces Genuine Part No. 542-16082-4

CDZ9-106 Castoldi Jet Zinc Alloy Pipe Anode Replaces Genuine Part No. 590-14055-2

CDZ9-107 Castoldi Jet Zinc Alloy Ring Anode -Small Replaces Genuine Part No. 590-16324-3

CDZ9-108 Castoldi Jet Zinc Alloy Ring Anode - Large Replaces Genuine Part No. 590-66209

CDZ9-109 Volvo Penta Zinc Alloy Cube Anode Replaces Genuine Part No. 873395

To suit Duo prop models DPX S, DPX S1, DPX R, DPX A

CDZ9-110 Volvo Penta Zinc Alloy Plate Anode Replaces Genuine Part No. 876638


CDZ9-111 Volvo Penta Zinc Alloy Bar Anode Replaces Genuine Part No. 872139



Part number Description Size

CDZPN-63 Maxi prop Zinc Anode To suit 63 mm Diameter Hub/Boss



Part No. Ribbon cross section Steel Core Ø Coil length Coil WeightSize mm mm metres Kgs

CDZR 1 25.4 x 31.75 4.70 30.50 108.88CDZR 2 15.88 x 22.22 3.43 61.00 108.88CDZR 3 12.70 x 14.28 3.30 152.00 135.75CDZR 4 8.73 x 11.91 2.92 305.00 113.46

Part number Part numberPropeller Shaft Dia. Inches Propeller Nut thread Size Thread per inch (T.P.I.) Propeller Zinc Nut & bronze insert Propeller Zinc Anode only3/4” 1/2” UNC 13 CDZPN-AA CDZPN-A7/8” 5/8” UNC 11 CDZPN-BB CDZPN-B1” 3/4” UNC 10 CDZPN-CC CDZPN-C1 1/8” 3/4” UNF 16 CDZPN-CC - UNF CDZPN-C1 1/4” 7/8” UNC 9 CDZPN-DD CDZPN-D1 3/8” 1” UNC 8 CDZPN-EE CDZPN-E1 1/2” 1 1/8” UNC 7 CDZPN-FF CDZPN-F1 3/4” 1 1/4” UNC 7 CDZPN-GG CDZPN-G2” 1 1/2” UNC 6 CDZPN-HH CDZPN-H

ZINC ALLOY PROPELLER NUT ANODES To suit Maxi props.

ZINC ALLOY PROPELLER NUT ANODES To suit outboards, outdrives and inboards.Propeller nut insert (silicon bronze alloy) cast to C87500 composition.

30

ZINC ELECTROPLATING ANODESCast from high purity (99.995%) primary zinc metal available in two standard shapes.

Description Size Approx.Weight PackagingZinc Slug 50mm x 50mm 520g 25kg bagZinc Ball 50mm Diameter 480g 25kg bag

OTHER SHAPES AND SIZES AVAILABLE ON REQUESTZINC BALLZINC SLUG

ZINC RIBBONExtruded Zinc alloy on a steel wire core, for the cathodic protection of underground and submerged structures

Maxi prop Zinc AnodeCDZPN-100 To suit 100 mm Diameter Hub/Boss

Overall Anode Anode Anode Strap Strap Other Insert Type Nett Wt Gross Wt.Part no. Length Length Width Depth Width Thick Kg Kg.

A B C D E F G Approx Approx

CDA-3S Type 2 950 750 38 38 -- -- 12 mm round bar 2.15 3.00CDA-3S Type 3 560 440 90 40 32 5 2.60 3.30CDA-5S Type 2 1500 1200 38 38 -- -- 12 mm round bar 3.60 4.90CDA-5S Type 3 950 750 50 50 -- -- 12 mm round bar 4.45 5.30CDA-6S 1700 1500 38 38 -- -- 12 mm round bar 4.50 6.00CDA-8S Type 2 1500 1200 50 50 -- -- 12 mm round bar 7.18 8.50CDA-9S Type 1 950 750 65 65 -- -- 12 mm round bar 8.15 9.00CDA-10S Type 1 1700 1500 50 50 -- -- 12 mm round bar 9.10 10.60CDA-11S Type 2 950 750 75 75 -- - 16 mm round bar 8.90 11.40CDA-13S Type 1 1400 1000 100 60 32 5 11.25 13.00CDA-14S 1500 1200 65 65 -- -- 12 mm round bar 12.70 14.00CDA-18S Type 1 1700 1500 65 65 -- -- 12 mm round bar 16.40 17.90CDA-18S Type 2 1500 1200 75 75 -- -- 16 mm round bar 15.87 18.22CDA-22S 1700 1500 75 75 -- -- 16 mm round bar 20.11 22.80CDA-15S Type 2 950 750 85 85 -- -- 16 mm round bar 13.50 15.00CDA-23S 1500 1200 85 85 -- -- 16 mm round bar 21.05 23.40CDA-29S 1700 1500 85 85 -- -- 16 mm round bar 26.33 29.00CDA-36S 1500 1200 100 100 -- -- 20 mm round bar 32.32 36.00CDA-42S 2000 1500 100 100 -- -- 20 mm round bar 37.40 42.30CDA-68S 2900 2400 100 100 -- -- 20 mm round bar 60.60 67.70CDA-44S 1500 1200 100 130 -- -- 20 mm round bar 40.32 44.00CDA-55S 2000 1500 100 130 -- -- 20 mm round bar 50.00 55.00CDA-88S 2900 2400 100 130 -- -- 20 mm round bar 81.00 88.00CDA-76S 1500 1200 150 150 -- -- 20 mm round bar 72.32 76.00CDA-100S 2000 1500 150 150 -- -- 20 mm round bar 95.00 100.00CDA-152S 2900 2400 150 150 -- -- 20 mm round bar 145.00 152.00CDA-91S 1500 1200 150 180 -- -- 20 mm round bar 87.32 91.00CDA-114S 2000 1500 150 180 -- -- 20 mm round bar 109.10 114.00CDA-176S 2900 2400 150 180 -- -- 20 mm round bar 175.90 183.00CDA-65S 950 750 175 175 -- -- 20 mm round bar 62.70 65.00CDA-103S 1500 1200 175 175 -- -- 20 mm round bar 99.32 103.00CDA-131S 2000 1500 175 175 -- -- 20 mm round bar 126.19 131.00CDA-85S 950 750 200 200 -- -- 20 mm round bar 82.70 85.00CDA-135S 1500 1200 200 200 -- -- 20 mm round bar 131.32 135.00CDA-171S 2000 1500 200 200 -- -- 20 mm round bar 166.10 171.00CDA-130S 950 750 250 250 -- -- 20 mm round bar 129.70 132.00CDA-213S 1500 1200 250 250 -- -- 20 mm round bar 209.32 213.00CDA-266S 2000 1500 250 250 -- -- 20 mm round bar 261.00 266.00

31

ALUMINIUM ALLOY- TANK AND INDUSTRIAL ANODES

C B

A

D G


Part No Overall Anode Anode Anode Strap Strap Other Insert Type Nett Wt Gross Wt.Length Length Width Depth Width Thick Kg Kg.A B C D E F G

CDA-1S 300 210 75 40 25 3 Steel Strap 0.85 1.00

CDA-1.5S 270 155 155 25 25 3 Steel Strap 1.65 1.80

CDA-1.55S Type1 350 235 75 32 30 3 Steel Strap 1.30 1.55

CDA-2S 430 300 80 40 25 5 Steel Strap 1.80 2.25

CDA-2.70S 450 250 125 35 32 5 Steel Strap 2.25 2.70

CDA-3S Type 1 445 300 130 32 32 5 Steel Strap 2.65 3.20

CDA-5S Type 1 500 350 150 38 40 5 Steel Strap 4.20 5.00CDA-6S Type 2 800 505 120 40 40 5 Steel strap 5.23 6.50CDA-7S 800 570 110 40 40 5 Steel strap 5.80 7.00CDA-8S Type 1 800 510 130 50 40 5 Steel Strap 6.80 8.00CDA-9S Type 3 800 546 127 50 40 5 Steel strap 7.60 8.80CDA-9S Type 2 800 510 130 60 40 5 Steel strap 8.20 9.50CDA-10S Type 2 800 580 120 60 40 5 Steel strap 9.20 10.40CDA-12S 800 585 125 64 40 5 Steel strap 10.50 11.75CDA-13S Type 2 800 590 130 75 40 5 Steel strap 11.90 13.15CDA-15S Type 1 800 610 140 65 40 5 Steel Strap 13.80 15.00CDA-11S Type 1 800 600 143 47 40 5 Steel strap 10.00 11.20CDA-18S Type 3 800 615 145 75 40 5 Steel strap 16.50 17.80CDA-19S 800 615 150 80 40 5 Steel strap 18.25 19.50CDA-20S Type 1 1300 900 150 55 40 5 Steel Strap 17.50 20.00CDA-20S Type 2 800 635 150 90 40 5 Steel strap 20.00 22.00

ALUMINIUM ALLOY WELD-ON / BOLT-ON ANODES To suit small craft hulls, ships hulls, ballast tanks, rudders, bow thruster tubes, seachests, buoys, pylons, wharves, powerstation seawater inlets, cray, lobster and crab pots.

32



AVAILABLE WITH STAINLESS STEEL INSERT STRAPS FOR ATTACHMENT TO ALUMINIUM ALLOY HULLS.

A

B

D F

E C

Part No Overall Anode Anode Anode Strap Strap Other Insert Type Nett Wt Gross Wt.Length Length Width Depth Width Thick Kg Kg.

A B C D E F G

CDA-2.50H -- 250 125 40 -- -- 2 Slotted holes @ 150mm centres 2.25 2.50

CDA-3H - 300 145 35 - - 2 x 25 mm holes @ 158mm centres 3.10 3.35

CDA-7H - 510 130 50 - - 2 x 18 mm holes @ 250mm centres 6.50 7.00

CDA-1.5 -- 155 155 25 -- -- -- -- 1.70

CDA-1.5H -- 155 155 25 -- -- 20mm NB Steel Pipe Insert 1.67 1.70

CDA-1H -- 160 80 25 -- -- 20mm NB Steel Pipe Insert 0.82 0.85

Part No Overall Anode Anode Anode Strap Strap Other Insert Type Nett Wt Gross Wt.Length Length Width Depth Width Thick Kg Kg.

A B C D E F G

CDA-000 220 40 38 -- -- 3mm Ø Gal Wire -- 0.80

CDA-00 300 100 27 27 -- -- 3mm Ø Gal Wire -- 0.19

CDA-0 400 200 27 27 -- -- 3mm Ø Gal Wire -- 0.38

CDA-Type A -- 90 90 19 -- -- Steel Pipe Insert 15 NB -- 0.34

CDA-Type B -- 90 90 32 -- -- Steel Pipe Insert 15 NB -- 0.50

CDA-Type C -- 90 90 38 -- -- Steel Pipe Insert 15 NB -- 0.70

OTHER SHAPES AND CORE CONFIGURATIONS ARE AVAILABLE ON REQUEST

ALUMINIUM ALLOY BOLT-ON ANODES To suit small craft hulls, ships hulls, ballast tanks, rudders, bow thruster tubes, seachests, buoys, pylons, wharves, powerstation seawater inlets, cray, lobster and crab pots.

OTHER SHAPES AND CORE CONFIGURATIONS ARE AVAILABLE ON REQUEST

33

B

C

D

G



ALUMINIUM ALLOY POT ANODES To suit cray, lobster and crab pots.

B

D

C

C B

A

D Measurements in millimetres

ALUMINIUM ALLOY AND ZINC ALLOY BRACELET ANODESUNDER DEVELOPMENT

500

34

CDM 6C-126H Diameter 125 Height 65 Steel pipe insert 15mm N.B. 1.20 1.30

OTHER SHAPES AND SIZES AVAILABLE ON REQUEST

Magnesium Overall Anode Anode Anode Strap Strap Other Insert Type Nett Wt Gross Wt.Alloy Part No. Length Length Width Depth Width Thick Kg Kg. Kg.

A B C D E F

CDM0.70S 250 140 90 32 25 3 C/W Welded Tabs for Bolt-On 0.67 0.70

CDM1.0S 260 155 75 40 25 5 Steel strap 0.44 0.80

CDM1.2S 460 290 75 30 25 5 Steel strap 0.78 1.23

CDM3.5S 495 340 155 38 40 5 Steel strap 2.65 3.50

CDM3.0S 1500 1200 38 38 -- -- 8 mm round bar 2.38 3.00

CDM4.0S 1700 1500 38 38 -- -- 8 mm round bar 3.30 4.00

CDM5.0S 1500 1200 50 50 -- -- 12 mm round bar 4.38 5.00

CDM7.0S 1700 1500 50 50 -- -- 12 mm round bar 6.30 7.00

CDM9.0S 1500 1200 65 65 -- -- 16 mm round bar 7.18 9.00

CDM11.0S 1700 1500 65 65 -- -- 16 mm round bar 8.31 11.0

CAST MAGNESIUM ALLOY ANODES

CAST MAGNESIUM ALLOY CONDENSER ANODES

A

B

D F

E C

B

D



35

Anode assemblies are available with a standard 3/4" B.S.P.T. Steel Cap for the 21 mm diameter

rod and a 1" B.S.P.T. steel cap for the 27 mm diameter rod.

These anodes are colour coded to identify the material type for a given water quality. Water quality is defined by the Total Dissolved Solid (TDS) content.The table below shows the correct anode type for a given water quality.

Cap Colour Code Material / Potential Total Dissolved Solid(TDS) Content

Green Magnesium High PotentialAS2239-M1 0 - 40 mg/L

Orange or Black Magnesium Low PotentialAS2239-M2 40 - 600 mg/L

Blue AluminiumAS2239-A5 600 - 2500 mg/L

EXTRUDED MAGNESIUM ANODE RODS

To Suit: domestic and commercial hot water heaters, cooling towers and in-groundinstallations.Available in high (M1) and low (M2) potential alloy, in lengths up to 3 metres - assembled andblank form.

Each anode has a 3 mm diameter steel core running lengthwise through its centre.Assemblies are available in various configurations.1. Both ends plain (saw cut).2. One end plain, one end threaded.3. One end plain, one end capped.4. One end plain, one end with core wire exposed.5. Core wires exposed both ends.6. Flexi type anode - one end welded with steel cap with short anode segments on a solid flexible steel core. (M2 21 mm Ø ONLY)

1 2 3 4 5

Extruded magnesium anode assemblies showing various configurations.

6

EXTRUDED MAGNESIUM RIBBON (High Potential)Extruded Magnesium Alloy on a steel wire core for the cathodic protection of pipelines and underground tanks. Also forinternal protection of hot and cold potable water tanks.

Steel core size 3.0 mm nominal diameterRibbon cross section size 9.5 mm x 19 mmCoil length 305 metres / CoilCoil weight Approximately 113 kgs

36

EXTRUDED MAGNESIUM ANODE RODS (Continued)

Blank Lengths are available in the following sizes.Low Potential (M2) Diameter mm Length mm21 Nominal Up to 300027 Nominal Up to 3000

High Potential (M1) Diameter mm Length mm21 Nominal Up to 300033 Nominal Up to 3000

Extruded Magnesium Anode Assembies 21mm (Solid) Low Potential (M2) - Colour Coded Cap/Black.Standard Assemblies

Part No No of Segments Dia. mm Nom Length mm O/A Nom Steel Cap Size Anode Material Colour CodeCDMR-M2-21-95 - 21 95 3/4" B.S.P.T. M2 BlackCDMR-M2-21-105 - 21 105 3/4" B.S.P.T. M2 BlackCDMR-M2-21-200 - 21 200 3/4" B.S.P.T. M2 BlackCDMR-M2-21-280 - 21 280 3/4" B.S.P.T. M2 BlackCDMR-M2-21-330 - 21 330 3/4" B.S.P.T. M2 BlackCDMR-M2-21-350 - 21 350 3/4" B.S.P.T. M2 BlackCDMR-M2-21-500 - 21 500 3/4" B.S.P.T. M2 BlackCDMR-M2-21-610 - 21 610 3/4" B.S.P.T. M2 BlackCDMR-M2-21-750 - 21 750 3/4" B.S.P.T. M2 BlackCDMR-M2-21-810 - 21 810 3/4" B.S.P.T. M2 BlackCDMR-M2-21-915 - 21 915 3/4" B.S.P.T. M2 BlackCDMR-M2-21-1000 - 21 1000 3/4" B.S.P.T. M2 BlackCDMR-M2-21-1100 - 21 1100 3/4" B.S.P.T. M2 BlackCDMR-M2-21-1190 - 21 1190 3/4" B.S.P.T. M2 BlackCDMR-M2-21-1350 - 21 1350 3/4" B.S.P.T. M2 BlackCDMR-M2-21-1510 - 21 1510 3/4" B.S.P.T. M2 BlackCDMR-M2-21-1655 - 21 1655 3/4" B.S.P.T. M2 BlackCDMR-M2-21-1686 - 21 1686 3/4" B.S.P.T. M2 BlackCDMR-M2-21-2082 - 21 2082 Special Solarhart Type M2 Orange/BlackOther size assemblies available up to 3000mm in Length

Extruded Magnesium Anode Assemblies 21mm (Flexible) Patent PendingLow Potential (M2) - Colour Coded Cap / Black.Extruded magnesium alloy anode on to a flexible steel wire core.

Part No No of Segments Dia. mm Nom Length mm O/A Nom Steel Cap Size Anode Material Colour CodeCDMR-M2-21-810-F3 2/3 21 810 3/4" B.S.P.T. M2 BlackCDMR-M2-21-1190-F4 4 21 1190 3/4" B.S.P.T. M2 BlackCDMR-M2- 21-1510-F5 5 21 1510 3/4" B.S.P.T. M2 BlackCDMR-M2-21-1686-F5 5 21 1686 3/4" B.S.P.T. M2 Black

37

Extruded Magnesium Anode Assemblies 27mm (Solid) Low Potential (M2) - Colour Coded Cap / Black.

Part No No of Segments Dia. mm Nom Length mm O/A Nom Steel Cap Size Anode Material Colour CodeCDMR-M2-27-0200 - 27 200 1" B.S.P.T. M2 BlackCDMR-M2-27-1190 - 27 1190 1" B.S.P.T. M2 BlackCDMR-M2-27-1210 - 27 1210 1" B.S.P.T. M2 BlackCDMR-M2-27-1510 - 27 1510 1" B.S.P.T. M2 BlackOther size assemblies available up to 3000mm in Length

Extruded Magnesium Anode Assemblies 21mm (Solid) High Potential (M1) - Colour Coded Cap / Green.Standard Assemblies

Part No No of Segments Dia. mm Nom Length mm O/A Nom Steel Cap Size Anode Material Colour CodeCDMR-M1-21-0230 - 21 230 3/4" B.S.P.T. M1 GreenCDMR-M1-21-1210 - 21 1210 3/4" B.S.P.T. M1 GreenCDMR-M1-21-1510 - 21 1510 3/4" B.S.P.T. M1 GreenOther size assemblies available up to 3000mm in Length

Water cooling tower.

Domestic hot water system.

38

EXTRUDED ALUMINIUM ALLOY RODSTo suit domestic and commercial hotwater units and cooling towers.Available in A5 specification in lengths of up to 3000mm in blank form - available in 17 mm diameter only. Note: Aluminium has a limitedapplication in potable water systems.Anodes are available in various configurations.1. Both ends plain (saw cut). (Figure 1)2. One end plain, one end capped. (Figure 2)3. Flexi Type Anode - One end welded with steel cap and short anode segments on a flexible steel wire core.

Extruded Aluminium Anode Assemblies 17 mm (solid) A5 Specification - Colour Coded Cap / Blue.

Part No No of Segments Dia. mm Nom Length mm O/A Nom Steel Cap Size Anode Material Colour CodeCDAR-A5-17-0810 - 17 810 3/4" B.S.P.T. A5 BlueCDAR-A5-17-1190 - 17 1190 3/4" B.S.P.T. A5 BlueCDAR-A5-17-1510 - 17 1510 3/4" B.S.P.T. A5 BlueCDAR-A5-17-1686 - 17 1686 3/4" B.S.P.T. A5 BlueOther size assemblies available up to 3000mm in Length

Extruded Aluminium Anode Assemblies 17 mm (Flexible) patent pendingA5 Specification - Colour Coded Cap / Blue.Extruded aluminium alloy anode on to a flexible steel wire core.

Part No No of Segments Dia. mm Nom Length mm O/A Nom Steel Cap Size Anode Material Colour CodeCDAR-A5-17-0810-F3 3 17 810 3/4" B.S.P.T. A5 BlueCDAR-A5-17-1190-F4 4 17 1190 3/4" B.S.P.T. A5 BlueCDAR-A5-17-1510-F5 5 17 1510 3/4" B.S.P.T. A5 BlueCDAR-A5-17-1686-F5 5 17 1686 3/4" B.S.P.T. A5 Blue

1

2

3

CDZ9-21CDA9-21

CDZ9-53

CDA9-53

39

CDZ9-19

CDZ9-57

CDZ9-18

CDZ9-17

ENGINE ANODE QUICK REFERENCE CHART

CDZ9-25CDA9-25

Propeller Nut

CDZ9-58CDA9-58

CDZ9-26CDA9-26

Propeller Nut

CDZ9-8

Suzuki

CDZ9-49

Propeller Nut

CDZ9-51

CDZ9-50

Suzuki

CDZ9-8

Propeller Nut

CDZ9-53

CDZ9-21

CDZ9-44

CDA9-91CDZ9-91

MERCURY/FORCE/MARINER

HONDA

SUZUKI

OMC JOHNSON EVINRUDE

Yanmar

Propeller Nut

CDZ9-43

YAMAHA STERN DRIVE

40

INBOARDAPPLICATIONS

Divers DreamBolt-on type

Rudder AnodesCDZ6-70CDZ6-90CDZ6-130

Donut ShaftShaft Anode

TeardropPlain or with strap

BlockBolt on type

Engine Plug

Propeller Nut

CDZ9-54CDA9-54

CDZ9-20

CDZ9-59CDA9-59

CDZ9-65CDA9-65

CDZ9-52CDA9-52

Propeller Nut

CDZ9-24CDZ9-21CDA9-20CDA9-24CDA9-21

CDZ9-25CDA9-25

CDZ9-23CDA9-23

Mercruiser

CDZ9-66

MERCRUISER STERN DRIVE

41

CDZ9-46

CDZ9-8

CDZ9-43

CDZ9-44

CDZ9-42

CDZ9-40 CDZ9-41

CDZ9-13

CDZ9-77 Kit

CDZ9-93 Kit

CDZ9-45

CDZ9-47

CDZ9-48

CDZ9-27

CDZ9-56

CDZ9-55

Propeller Nut

Propeller Nut

VOLVO SAIL DRIVE ANDFOLDING PROPELLERS

CDZ9-76

CDZ9-15

CDZ-12

CDZ9-31

CDZ9-109

CDZ9-110

CDZ9-111

DPX Models Only

CDZ9-14

CDZ9-16

Propeller Nut

YAMAHA

OMC STERN DRIVE

VOLVO STERN DRIVE

42

Part Number Make

CDZ9-1 YANMARCDZ9-2 BUKHCDZ9-3 CATERPILLARCDZ9-4 G.M. UNIVERSALCDZ9-5 CATERPILLARCDZ9-6 GENERAL MOTORSCDZ9-7 YANMARCDZ9-9 GENERAL MOTORSCDZ9-10 GENERAL MOTORSCDZ9-11 VOLVO PENTACDZ9-28 CATERPILLARCDZ9-29 CATERPILLARCDZ9-32 UNIVERSALCDZ9-33 UNIVERSALCDZ9-34 UNIVERSALCDZ9-35 UNIVERSALCDZ9-36 CATERPILLAR / UNIVERSALCDZ9-37 UNIVERSALCDZ9-38 UNIVERSALCDZ9-39 VOLVO PENTACDZ9-62 SCANIACDZ9-63 UNIVERSALCDZ9-64 DETROITCDZ9-67 CUMMINSCDZ9-68 YANMARCDZ9-69 UNIVERSALCDZ9-70 CATERPILLARCDZ9-71 CATERPILLAR / YANMARCDZ9-72 CATERPILLARCDZ9-73 CATERPILLARCDZ9-74 CATERPILLARCDZ9-75 CATERPILLARCDZ9-78 CATERPILLARCDZ9-81 CATERPILLARCDZ9-82 CATERPILLARCDZ9-83 MERCRUISERCDZ9-91 MERCURYCDZ9-92 DETROIT CUMMINSCDZ9-94 AIFO

‘UNIVERSAL’ MARINE ENGINE CathometerThe Cathometer is a portable corrosion

control indicater for use on steel structuresimersed in seawater.

The Cathometer can:• Indicate the level of corosion activity on

steel structures such as underwater hulls,ballast tanks, docks, jetties and off-shore

platforms.• Indicate the efficiency of any cathodic

protection system fitted and give warning of necessity of anode replacement in advance of ships docking

dates for repair schedules. • Identify shrouded or unprotected areas in

a cathodic protection scheme.• Indicate the compatibility of a cathodic

protection system with an underwater paint scheme.

• Identify the source of problems associated with stray currents.

43

Zinc electroplating balls.

Zinc electroplating slugs.

Stock of primary zinc ingot. Commercial vessels.

Tasmanian cray pots.

New Zealand craypots.

Western Australianlobster pots.

Protect your investmentUse CDQ anodes

Catalogue

Documents

zinc anodes

zinc alloy condenser

zinc alloy pot anodes

zinc alloy bracelet

zinc alloy string anodes

zinc alloy bolt

zinc alloy weld

zinc alloy tank