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SLINGS, SYNTHETICChoosing the Right Sling ..........................8-1Nylon .....................................................8-5–9Polyester................................................8-6–9Polyester Round......................................8-14Steel Lined ................................................8-8Twin-Path® .........................................8-10–15Web..............................................8-1–9, 8-16
SLINGS, WEB 101Capacity Tags............................................8-2Chemical Effects .......................................8-2Choosing the Right Sling ..........................8-1Effects of Angle .........................................8-2Environmental Effects ........................8-2, 8-4Factors Effecting Strength.........................8-2How to Measure ........................................8-1Inspection..............................................8-3–4Operating...................................................8-3Ordering Information .................................8-2Red Warning Core ....................................8-1Repair........................................................8-4Sling Types Available.................................8-1Warning Sheets.........................................8-2
WEB SLING 101Capacity Tags............................................8-2Chemical Effects .......................................8-2Choosing the Right Sling ..........................8-1Effects of Angle .........................................8-2Environmental Effects ........................8-2, 8-4Factors Effecting Strength.........................8-2How to Measure ........................................8-1Inspection..............................................8-3–4Operating...................................................8-3Ordering Information .................................8-2Red Warning Core ....................................8-1Repair........................................................8-4Sling Types Available.................................8-1Warning Sheets.........................................8-2
Standard Sling TypesType 1 – TC Slings: Slings have a triangle fitting onone end & a slotted triangle fitting (the choker) on theother end. Choice of lightweight aluminum or durablesteel fittings.This is most commonly used in a chokerhitch, but can also be used in basket and verticalhitches.
Type 2 – TT Slings: Slings have a triangle fitting oneach end. Used in vertical and basket hitches only(basket hitch being most typical). Choice of light-weight aluminum or durable steel fittings.Type 2slings are more economical than Type 1.
Type 3 – EE Slings: Slings have eyes at both ends–choice of straight or tapered eyes (tapered eyes arestandard > 2" web-width). Flat Eye slings are verypopular slings which can be used in all three types ofhitches. They are easy to remove from beneath theload after the load is in place. Unless Type 4 isrequested, Type 3 will be supplied as the standardEE sling.
Type 4 – EE Slings: Twisted Eye slings are similarto Type 3 except the eyes are twisted to a 90O rightangle to the sling body to form a better choker hitch.This type of eye also nests together better whenused in a basket hitch. (Tapered eye are standard >2" web-width)
Type 5 – EN: - Endless slings, sometimes alsoreferred to as grommet slings, are very economical .This is the most versatile sling. They can be used inall three types of hitches and wear points can bemoved to increase sling life. The sling legs can bespread for improved load balance.
Type 6 – RE: Return Eye Sling is also referred to asReversed Eye Sling. Sling body is formed by 2 partsof webbing sewn side by side using either a corduratube or web in the finished width creating a protectivewebbing over the entire body and eyes. This extrawebbing reinforces the sling and protects it fromwear, resulting in an exceptionally strong sling.
Buffalo Web SlingsImportant Facts About Buffalo Web Slings *Nylon & Polyester
How to Choose the Right SlingIf you have any questions, please call Hanes Supply. Make sure you knowthe use, load and conditions for the sling you need. Reading the factsabout web slings should help you decide.
Nylon vs. PolyesterNylon Web - Strong & EconomicalNylon is strong, lightweight and very flexible. It is highly resistant to alka-lies, but should never be used in acid conditions. When treated for abra-sion it has a stretch factor of 10%. Nylon can be worked in up to 200O F.
Polyester Web - Less Stretch & Acid ResistantPolyester webbing has become very valuable especially in applicationswhich subject the sling to acid conditions. Also polyester slings are excel-lent where headroom is limited because of the webbing stretch character-istics. Polyester can worked in up to 200OF.
Sling StrengthOSHA standards demand that the rated capacity be noted on each sling.Check the capacity tables in this catalog to make sure of the strength ofthe sling you may need. Do not ever exceed rated capacities of a websling.Each Buffalo Web Sling has a leather tag which states the manufacturer,the type of material rated capacities, type of sling, and length and width of the sling.Each Buffalo Sling also has a warning tag about inspection and restrictions as to the web sling.
Use of Sling1. Load surface problemIf sharp or rough edges come in contact with web slings cutting or acceler-ated wear could occur. Certain accessories in this catalog could help pro-tect the sling.
2. Avoid Crushing and Knotting of SlingsDon't crush a sling between load and other surface.
3. Do not expose the sling to the sun for an extended period of time.Prolonged exposure of sling to the sun will degrade lifting capacity.
4. Different Hitches' Rated CapacitiesSlings have the largest load when used in the basket hitch. Capacity in thevertical hitch is 50% of that in the basket hitch. Capacity in the chokerhitch is 40% of basket hitch capacity.
Web Material - Soft & FlexibleWeb Slings are made from nylon or polyester lifting yarn that is woven intovarious widths and thicknesses. The lifting yarn is surrounded by a toughabrasive resistance jacket yarn.
Red Warning CoreRed colored yarns under the jacket show when the jacket is worn or cutthrough and indicate that the sling should be taken out of use.
Shock AbsorptionThe stretching of web slings allows a cushion against sudden shock.When loaded at rated capacity, a nylon sling will stretch 6-8% and polyester 3-4%. Slings return to normal length when not loaded.
Red Core Yarns Warning System
All Hanes Supply Inc., nylon and polyester web slings have red warning
yarns. Red core yarns become exposedwhen the sing surface is cut or wornthrough the woven face yarns. This is
one criteria, but not the only one for removal from service. For more
information, see OSHA Requirements.
Length
HitchesVertical Choker Basket
HitchesVertical Basket
HitchesVertical Choker Basket
HitchesVertical Choker Basket
HitchesVertical Choker Basket
HitchesVertical Choker Basket
Measuring Web SlingsWith sling layed flat, measure Pull-to-Pull.
Length
Length
Physical Factors Effecting Sling StrengthA sling's life can be extended significantly with proper care and use.The following physical factors should be considered when utilizing anyweb sling:Cutting: Movement of a load edge against the sling is the most frequentcause of web sling damage/failure.Foreign Matter: Damage may be caused to a web sling both internally andexternally by materials such as metal chips, weld spatter, heavy grit, etc.Improper Loading: A sling's strength may be seriously compromised ifthere has been inadequate consideration of the effect of angle factors, ifthe load is unbalanced, shock loaded, or over loaded.Punctures & Abrasions: These can seriously lessen a sling's strength.Be aware of the Red Core Yarns that can help to locate damaged webbing.Temperature: Temperatures above 195°F will cause serious degradationto Nylon and Polyester Web Slings.Ultraviolet Light: Prolonged exposure to UV light (sunlight or arc welding)can adversely effect Nylon & Polyester Web Slings. Inspect regularly tosee if slings appear bleached/stiff.
Effect of AngleThe angle measured between a horizontal line and the sling leg or body isknown as the SLING ANGLE. A slings rated capacity is effected by thisangle and is therefore very important.As shown below, when the sling's angle increases, the load capacity oneach leg decreases. This is the case whether it's one sling being used topull at an angle, a basket hitch, or multi-legged bridle sling. Do not usesling angles of less than 30°.
Environmental Considerations
• Temperatures above 195° F are seriously degrading to Nylon and polyester.
• Prolonged exposure to ultraviolet light adversely affects nylon and polyester. Slings become bleached and stiff when exposed to sunlight or arc welding.
• Some chemicals have an adverse effect on nylon and polyester.(See Table 1 below)
Chemical Environmental DataGeneral guide only. For specific concentration, temperature, and time factors, please consult us prior to purchasing or use.
How to Order Synthetic Web SlingsWhen ordering sling always consider:a. Type of hitchb. Capacity tablesc. The Sling to load angles
When Placing Web Sling Order Please Specify:1. Sling Material (Nylon or Polyester)2. Sling type and code number3. Number of plies4. Type of webbing5. Web width6. Sling length
Number of Plies - This refers to the number of layers of webbing in thebody of the slings.
Type of Webbing - Buffalo Sling handles a Light Duty (#6) and HeavyDuty line of webbing (#8).
Sling Length - Web Slings can be made to virtually any length measuredas follows:
Definition of Web Sling Order Code:TC 2 - 803 x 10
(a) (b) (c)(d) (e)
a. Sling typeb. Number of pliesc. Type of webbing - heavy dutyd. Width of webbinge. Length of sling
Capacity Tag and Warning SheetA sewn on durable Capacity Tag and Warning Sheet are included witheach Buffalo Sling.It is important to read and understand all use and warning informationbefore using sling.Remove sling from service if Capacity Tag or Warning Tag has beenremoved or is illegible.Please call if you have any questions or concerns.
Sample Capacity Tag:
TYPE SERIAL NO. WIDTH LENGTH
RATED CAPACITIES IN LBS.
VERTICAL CHOKER BASKET
BUFFALOSLING
NYLONSLING
250000-12EE2-802 2"
4800 lbs.6400 lbs. 12,800 lbs.
12'
• Failure to comply with this warning may result in severe personal injury or death.
• Inspect sling for damage before each use.• Always protect sling webbing from sharp edges of load.• Do not attempt to use sling above rated capacity.• Do not use sling if capacity tag is removed.• Do not expose sling to temperatures above 194OF.• Do not tie knots in sling webbing as strength is greatly
reduced.• Do not use sling if there are any signs of cut webbing,
heat or chemical damage, excessive wear, or other defects.• Consult sling load chart for basket hitch capacity reduction due to sling angle.• Do not use near acids.
NYLON
Buffalo Web SlingsOrdering info., Warnings, Cautions & Considerations
Sling AngleIn
Degrees Factor15 .25920 .34225 .423
30 .50035 .57440 .643
45 .70750 .76655 .819
60 .86665 .90670 .940
75 .96680 .98585 .99690 1.000
Chemical Nylon PolyesterAcids NO OK1
Alcohols OK OKAldehydes OK NOStrong Alkalis OK OK2
Bleaching Agents NO OKDry Cleaning Solvents OK OKEthers OK NOHalogenated Hydro-Carbons OK OKHydro-Carbons OK OKKetones OK OKOils Crude OK OKOils Lubricating OK OKSoap & Detergents OK OKWater & Seawater OK OKWeak Alkalis OK OK
1) Concentrated sulfuric acid will cause disintegration.2) Strong alkalis at elevated temperatures will cause degradation.
Table 1
! WARNING
ChokerHitch
1000 lbs.866 lbs.
60°
45° 30°
707 lbs.500 lbs.
VerticalHitch
Basket
! WARNING
Sample Warning Sheet:
SYNTHETIC WEB SLINGS:Inspection of Synthetic Web Slings ASME B30.9C 1994
Type of Inspectiona. Frequent inspection - This inspection should be made by the person
handling the sling each day the sling is used.b. Periodic inspection - This inspection should be conducted by designat-
ed personnel. Frequency of inspection should be based on:1. Frequency of sling use;2. Severity of service conditions; and3. Experience gained on the service life of slings used in similar appli-
cations. Periodic inspection should be conducted at least annually.
INSPECTION RECORDS. Written inspection records, utilizing the identifi-cation for each sling as established by the user, should be kept for allslings. These records should show a description of the new sling and itscondition on each periodic inspection.
REMOVAL CRITERIA. A sling shall be removed from service if damagesuch as the following is visible and shall only be returned to service whenapproved by a designated person.a. Acid or charring bumsb. Melting or charring of any parts of the slingc. Holes, tears, cuts or snagsd. Broken or worn stitching in load bearing splicese. Excessive abrasive wearf. Knots in any parts of the slingg. Excessive pitting or corrosion, or cracked, distorted or broken fittingsh. Other visible damage that causes doubt as to the strength of the sling.
Operation of Synthetic Web Sling ASME B30.9C 1994
Operating Practices• Slings having suitable characteristic for the type of load, hitch and
environment shall be selected in accordance with appropriate table.• The weight of load shall be within the rated load of the sling.• Slings shall be shortened, lengthened, or adjusted only by methods
approved by the sling manufacturer.• Slings shall not be shortened or lengthened by knotting.• Sharp corners in contact with the sling should be padded with material
of sufficient strength to minimize damage to the sling.• Portions of the human body should be kept from between the sling and
the load, and from between the sling and the crane hook or hoist hook.• Personnel should stand clear of the suspended load.• Personnel shall not ride the sling.• Shock loading should be avoided.• Slings should not be pulled from under a load when the load is resting
on the sling.• Slings should be stored in a cool, dry, and dark place to prevent
environmental damage.• Twisting and kinking the legs shall be avoided.• Load applied to the hook should be centered in the base (bowl) of hook
to prevent point loading on the hook.• During lifting, with or without load, personnel shall be alert for possible
snagging.• In a basket hitch, the load should be balanced to prevent slippage.• The sling's legs should contain or support the load from the sides above
the center of gravity when using a basket hitch.• Slings should be long enough so that the rated load is adequate when
the angle of the legs is taken into consideration.• Slings should not be dragged on the floor or over an abrasive surface.• In a choker hitch, slings shall be long enough so the choker fitting
chokes on the webbing and never on the other fittings.• Nylon and polyester slings shall not be used at temperatures in excess
of 194°F (90°C) or a temperature below -40° F (-40°C).• When extensive exposure to sunlight or ultraviolet light is experienced
by nylon or polyester web slings, the sling manufacturer should be consulted for recommended inspection procedures.
"Reprinted from ASME B30.9-1990 by permission of The American Society of Mechanical Engineers".
Web Slings Damage ExamplesWeb Slings must be removed from service whenever damaged. Prior toeach use, all web slings must be examined for any of the following typesof damage. In any instance when the red core warning threads are visible,the sling must be immediately removed from service. The following arecommon examples of web sling damage:
Abrasion Damage - Abrasion dam-age could happen when the slingtightens around a rough load orpulling a sling from under a load.Over a period of time, a sling thatconstantly rubs against a rough sur-face can show abrasion damage.
Acid Damage - Nylon Slingsshould not be exposed to an acidenvironment at any time. Acids indirect contact with nylon can causerapid deterioration, any sling withany acid damage should be imme-diately replaced.
Cuts - A cut is a break of the nylonsurface usually caused by the slingcontact with a sharp edge of theload being lifted. A complete cutcan cause a load to be dropped. Acut that shows any sign of the redcore warning yarn must be immedi-ately removed from service. Wearpads can help to reduce the risk ofnylon sling cuts.
Edge Cut - A nylon sling could expe-rience a cut only on one edge. Thiswill still reduce the strength of theentire sling and must be removed ifand red core yarn is visible.
Face Cut - These cuts into the faceof the sling material can be causedby a load shift of a lesser lift over asharp edge. These face cuts shouldbe examined and the sling shouldpossibly be removed even if no redcore warning thread is visible as asecond face cut in a damaged posi-tion could cause sling failure.
Heat Damage - Any nylon slingexposed to heat above 195° F ornylon slings in direct contact withflame must be immediatelyremoved from service. Burn spotsmelting or charring are tell talesigns of heat damage.
Illegible or Missing Tag - Nylonslings with an unreadable or miss-ing tag must be removed from serv-ice. The sling user must know thetype and capacity of any nylon slingto be used with no exceptions.
Punctures and Snaps - Sharppoints may snag or puncture nylonweb material. This will compromisethe strength of the damaged nylonsling. Such a sling must beremoved from service.
Tensile Break - A tension break iscaused by an overloading of anylon sling or a shock load. Theseoverloaded slings looked frayed atthe point of the sling failure. Theseslings must be immediatelyremoved from service.
Elasticity - The stretch characteris-tics of web slings depends on thetype of yarn and the web finish.
Environmental Considerations1. Slings should be stored in a cool, dry and dark place, and should not
be exposed to sunlight, to prevent mechanical or chemical damagewhen not in use.
2. Chemically active environments can effect the strength of syntheticweb slings in varying degrees ranging from none to total degradation.The sling manufacturer should be consulted before slings are used inchemically active environments.
A) ACIDS1. Nylon is subject to degradation in acids, ranging from none to total
degradation.2. Polyester is resistant to many acids, but is subject to degradation,
ranging from none to moderate in some acids.3. Each application shall be evaluated, taking into consideration
the following:I. Type of AcidII. Exposure conditionsIII. ConcentrationIV. Temperature
B) ALKALIS1. Polyester is subject to degradation in alkalis, ranging from none to total
degradation.2. Nylon is resistant to many alkalis, but is subject to degradation ranging
from none to moderate in some alkalis.3. Each application shall be evaluated, taking into consideration the
following:I. Type of Alkalis II. Exposure conditions III. Concentration IV. Temperature
4. Nylon and polyester slings shall not be used at temperatures in excessof 194° F (90° C), however, they may be used in temperatures as lowas -40° F (-40° C).
5. Slings incorporating aluminum fittings shall not be used where fumes,vapors, sprays, mists or liquids of alkalis and/or acids are present.
6. Environments in which synthetic webbing slings are continuouslyexposed to ultra-violet light can affect the strength of synthetic web-bing slings in varying degrees ranging from slight to total degradation.a. Factors which affect the degree of strength loss are:
1. Length of time of continuous exposure2. Sling construction and design3. Other environmental factors such as weather conditions and
geographic location.b. Suggested procedures to minimize the effects of ultra-violet light.
1. Store slings in a cool, dry and dark place when not being used forprolonged periods of time
2. Inspect slings weekly or more often depending on frequency ofsling use.
c. Visual indications of ultra-violet degradation are:1. Bleaching out of sling color2. Increased stiffness of sling material3. Surface abrasion in areas not normally in contact with the load.
d. Proof-Testing - Slings used in environments where they are subjectto continuous exposure to ultra-violet light should be proof tested totwo times rated capacity annually, or more frequently depending onseverity of exposure.
Inspection1. Type of Inspection
a. Initial Inspection - Before any new or repaired sling is placed in service, it shall be inspected to insure that the correct sling is beingused, as well as to determine that the sling meets the requirementsof this specification.
b. Frequent Inspection - This inspection should be made by the personhandling the sling each time the sling is used.
c. Periodic Inspection - This inspection shall be conducted by designated personnel. Frequency of inspection should be based on:1. Frequency of sling use2. Severity of service conditions
3. Experience gained on the service life of slings used in similarapplications
4. Periodic inspections should be conducted at least monthly.
Possible Defects1. A sling shall be removed from service if any defects such as the
following are visible:a. Acid or alkali burnsb. Melting, charring, or weld spatter of any part of the slingc. Holes, tears, cuts, snags or embedded particlesd. Broken or worn stitching in load bearing splicese. Excessive abrasive wearf. Knots in any part of the slingg. Distortion and excessive pitting or corrosion or broken fittingsh. Other apparent defects which cause doubt as to the strength of
the slingi. If sling rated capacity or sling material identification is missing
or not readable.
Inspection Records1. Written inspection records, utilizing the identification for each sling as
established by the user, should be kept on file for all slings. Theserecords should show a description of the new sling and its conditionon each subsequent inspection.
Repair of Web Slings1. Slings shall be repaired only by a sling manufacturer. When repaired
by other than the original manufacturer, the sling shall be permanentlymarked to identify the repair agent.
2. All repaired slings shall be proof tested to two (2) times its newlyassigned rated capacity, before being put back into service.Certification of proof test should be provided.
3. Temporary repairs of either webbing, fittings, or stitching shall not bepermitted.
WARNING! Web Slings can be cut by contact with sharp or unprotected load edges.Padding must be used to protect the sling.
POLYESTER ROUND SLINGS:Inspection of Polyester Round Slings:Web Sling and Tie Down AssociationType of Inspectiona. Initial Inspection - Before any polyester round sling is placed into
service it shall be inspected by a designated person to ensure that thecorrect round sling is being used, as well as to determine that the roundsling meets the requirements of this specification.
b. Frequent Inspection - This inspection shall be made by a qualified person handling the polyester round sling each time the round sling isused.
c. Periodic Inspection - This inspection shall be conducted by a designated person. Frequency of inspection should be based on:1. Frequency of use2. Severity of service conditions3. Experience gained on service life of polyester round sling used in
similar applications.4. Periodic inspection should be conducted at least monthly.
Removal from ServiceA polyester round sling shall be removed from service if any of the
following are visible:a. If polyester round sling identification is missing or unreadable.b. Melting, charring or weld spatter on any part of the polyester round
sling.c. Holes, tears, cuts, embedded particles, abrasive wear, or snags that
expose the core fibers of the polyester round sling.d. Broken or worn stitching in the cover which exposes the core fibers.e. Fittings when damaged, stretched or distorted in any way.f. Polyester round sling that are knotted.g. Acid or alkalis bums of the polyester round sling.h. Any conditions which cause doubt as to the strength of the polyester
Nylon SlingsSynthetic Web SlingsSafety Info. Continued
Operation of Polyester Round Slings:Web Sling and Tie Down Association• Determine weight of the load. The weight of the load shall be within
the rated capacity of the polyester round slings(s).• Select a polyester round sling having suitable characteristics for the
type of load, hitch and environment.• Polyester round slings shall not be loaded in excess of the rated
capacity. Consideration shall be given to the round sling to load angle which affects rated capacities.
• Polyester round slings with fittings which are used in a choking hitchshall be of sufficient length to assure that the choking action is on theround sling, and never on the fittings.
• Polyester round slings used in a basket hitch shall have the load balanced to prevent slippage.
• The openings in fittings shall be the proper shape and size to ensurethat the fittings will seat properly on the polyester round sling, cranehook, or other attachments.
• Polyester round slings shall always be protected from being cut by sharp comers, sharp edges, protrusions, or abrasive surfaces.
• Polyester round slings shall not be dragged on the floor or over an abrasive surface.
• Polyester round slings shall not be twisted, shortened, lengthened, tied into knots, or joined by knotting.
• Polyester round slings shall not be pulled from under loads when the load is resting on the polyester round sling.
• Do not drop polyester round slings equipped with metal fittings,• Polyester round slings that appear to be damaged shall not be
used unless inspected and accepted as usable.• The polyester round sling shall be hitched in a manner providing
control of the load.• Personnel, and all portions of the human body shall be kept from
between the polyester round sling and the load, and from between the polyester round sling and the crane hook or hoist hook. Personnel shall stand clear of the suspended load.
• Personnel shall not ride the polyester round sling.• Shock loading shall be avoided.• Twisting the legs (branches) shall be avoided.• Load applied to a hook shall be centered in the bowl of the hook to pre-
vent point loading.• During lifting, with or without the load, personnel shall be alert for possi-
ble snagging of the polyester round sling.• The polyester round slings shall be long enough so the rated capacity is
adequate when the sling to load angle is taken into consideration.• Only Polyester round slings with legible identification tags shall be used.• Tags and labels should be kept away from the load, hook
and point of choke.• The polyester round sling shall not be constricted or bunched between
the ears of a clevis or shackle, or in a hook. When a polyester roundsling is used with a shackle, it is recommended that it be used (rigged)in the bow of the shackle.
• Place blocks under load prior to setting down the load, to allow removalof the polyester round slings, if applicable.
Type 5
Type 4Type 3
Type 1
* Type Two cannot be used with a choker hitch.
1 PLY
2 PLY
Web Rated Capacities (lbs)Width Type 1 Type 2*(in.) (TC) (TT) Vertical Choker Basket
Specifications1. The thickness of light duty webbing is 1/8".2. The sling width and number of webbing
piles will effect the eye length of Types 3 & 4.
NOTE: Tapering - Unless otherwise request-ed, Types 3, 4 & 5 are tapered at a width of3" and above. These wider slings are taperedat the bearing points for crane hook accom-modation.
Three & Four Ply Hardware Slings are Available upon Request.* Type Two cannot be used with a choker hitch.
Types 1 & 2
Type 4
1. The thickness of Heavy Duty Webbing is approx. 3/16".2. The sling width and number of webbing plies will effect the eye length of Types 3 & 4.NOTE: See Eye Length Chart & Information on Monster-Edge Slings.
Type 2Type 1 Type 3
† Monster-Edge available for all Heavy Duty Type Slings. Most web sling damage starts onthe edge and progresses across the face of the webbing. Polymer coated yarns are woven intothe edges of Monster-Edge sling webbing to reduce damage and increase its useful life.Monster-Edge is 67% more resistant to edge cutting than standard sling webbing.
NOTE: Add an “M” onto the end of ordering code for Monster-Edge.
Tapering - Types 3, 4, and 5 are tapered at 3" and wider unless otherwise ordered. Thesewider slings are tapered at the bearing points to accommodate a crane hook.
Treatment - Unless specifically requested, all nylon web slings will have an abrasion resistanttreatment applied. The standard for polyester web slings, however, is without treatment.
Note: Add a “D” to the end of Sling Code for Polyester.Polyester webbing is not available over 10" in width.
Failure to follow the care, use and inspection instructions could result in severe personal injury. DO NOT exceed rated capacities.
! WARNING
Type 6
Continuous Eye Wide-LiftFor Heavy Loads - Constructed from one endless sling with the two bodylengths butted and joined side by side. Stiffener webbing is used at thebase of the eyes to deter the body webbing from folding down the middle.
Attached Eye Wide-LiftFor Light, bulky loads that require wider bearing areas and some balance attributes. Eyes are made from separate material – WLA1 is one ply – WLA2 is two ply – both sewn to sling body. Body is single ply for both one and two ply eyes.
Reversed Eye Sling is a modified endless sling. Cordura wear pads offer added protection on the body and eyes of the sling. This extraCordura webbing offers superior abrasion resistance and sling life.
2000CapacityTwo Stripes= 2,000 lbs.per inch ofwidth (one plyonly). Superiorabrasion resist-ance. Stronger thanother webbing by 25%. Fortypes 3, 4 & 5, the eyes ofCordura-Web 2000 slings forare not tapered in any width.Cordura-Web slings meet orexceed OSHA and ASMEB30.9 requirements.
1000CapacityOne Stripe =1,000 lbs. perinch of width(one ply only).Tough cordurasurface on a lightduty web sling. Loadsurface is further protect-ed with the wider bearing surface, per capacity. ForTypes 3 & 4, the eyes of oneply Cordura-Web 1000 slingsare tapered for widths of 3"and 4". Cordura-Web slingsmeet or exceed OSHA andASME B30.9 requirements.
Code Web Rated Capacity (lbs)*Width V.(in) Vertical Choker Basket
* Do not exceed rated capacities. Ratings must be reduced when slings are used at angles of less than 90O from horizontal.
† Cordura is a registered trademark of DuPont.
Glass Lifting SlingsBuffalo Sling can custom make your compa-ny lifting slings to fit any glass size load. Theycan be designed to permit close stacking ofglass and these two ply slings feature wearpad material for protection against thosesharp edges, and side bridles for added loadstabilization. Call Hanes Supply Inc. with yourparticular requirements.Kevlar® and PVC rubber coated wear pads are available. Please callHanes Supply with your exact requirements.
Superior AbrasionResistanceThese slings are available in two strength capacities.Abrasive resistant Cordura†yarns cover all surfaces of theweb sling, extending sling lifeand long term value.
Stone Lifting SlingsBuffalo Stone Lifting Nylon Slingsare reinforced with special abra-sion resistant yarns. The standardstone lifting sling has a width of 4".
Boat Lifting SlingsThese quality, high capacity slings are engineered to provide labor-savingconvenience with all types of lifting devices. They are available in one ortwo-ply construction, in webbing widths from 2" to 12", to provide ratedcapacities for virtually any size boat normally lifted by an overhead device.Rigged in basket hitches, pairs of standard slings offer total lifting capabili-ty to 53 tons per pair, and greater lifts can be achieved by rigging addition-al slings, or pairs, in the lift.Both Polyester and Nylon provide outstanding resistance to rot andmildew, since neither fiber supports bacterial or fungal growth, and neitheris adversely affected by immersion in water – either fresh or seawater. Allloose pin hardware is plated for corrosion resistance.
Note: For loose-pin hardware (shackles)on two-ply slings made with 8", 10" or12" webbing, consult Hanes Supply.
Web & Bridle Slings
Model LIB - Lowering In BeltProduct Features:• Efficient handling of large pipes• Provides stable lift of long pipes• Designed and manufactured to ASME
Head Iron - Model HIHead Iron Head Iron Lifting Eye Head Iron Provided A B C T Wt. (lbs)HI-212 1-3/4 4 5 1-1/2 40HI-418 2-1/4 5 7 1-3/4 70HI-420 2-1/4 5 7 1-3/4 70HI-524 2-1/2 5 8 1-3/4 90HI-630 2-3/4 5 8 2 110HI-736 3 5 8 2-1/4 130HI-742 3 5 8 2-1/4 130HI-748 3 5 8 2-1/4 130HI-842 3-1/2 6-1/2 10 2-1/4 145HI-848 3-1/2 6-1/2 10 2-1/4 145HI-948 4 6-1/2 10 2-1/2 150
Length
Lowering Belt
Head Iron
PIPE AND MANHOLE HANDLING:
Model SCB-Lined Steel Choker BeltProduct Features:• Steel lined fabric belt allows exact alignment of pipe.• Flexibility gives a firm grip without slippage• Field repairable• Designed and manufactured to ASME B30.9
Do not exceed rated capacities. Ratings must be reducedwhen slings are used at angles of less than 90O fromHorizontal.
WARNING!
Codefor
Web Web Web No. Rated Capacity (lbs) Oblong Link Sling HookSling Width Plies ofLegs (in) Legs @ 90° @ 60° @ 45° @ 30° A x B x C D x E x F
1 1 Single 1,600 1,300 1,100 800 1/2 x 2-1/2 x 5 3/4 x 3-1/8 x 1EE1-801 1 1 Double 3,200 2,700 2,200 1,600 1/2 x 2 1/2 x 5 3/4 x 3-1/8 x 1
1 1 Triple 4,800 4,100 3,300 2,400 3/4 x 3 x 6 3/4 x 3-1/8 x 11 1 Quad 6,400 5,500 4,500 3,200 1 x 4 x 6 3/4 X 3-1/8 X 11 2 Single 3,000 2,500 2,100 1,500 1/2 x 2-1/2 x 5 7/8 x 3-21/32 x 1-1/16
EE2-801 1 2 Double 6,000 5,100 4,200 3,000 3/4 x 3 x 6 7/8 x 3-21/32 x 1-1/161 2 Triple 9,000 7,700 6,300 4,500 3/4 x 3 x 6 7/8 x 3-21/32 x 1-1/161 2 Quad 12,000 10,300 8,400 6,000 1 x 4 x 8 7/8 x 3-21/32 x 1-1/162 1 Single 3,000 2,500 2,100 1,500 1/2 x 2-1/2 x 5 7/8 x 3-21/32 x 1-1/16
EE1-802 2 1 Double 6,000 5,100 4,200 3,000 3/4 x 3 x 6 7/8 x 3-21/32 x 1-1/162 1 Triple 9,000 7,700 6,300 4,500 3/4 x 3 x 6 7/8 x 3-21/32 x 1-1/162 1 Quad 12,000 10,300 8,400 6,000 1 x 4 x 8 7/8 x 3-21/32 x 1-1/162 2 Single 6,000 5,100 4,200 3,000 3/4 x 3 x 6 1-1/4 x 4-11/16 x 1-1/4
EE2-802 2 2 Double 12,000 10,300 8,400 6,000 1 x 4 x 8 1-1/4 x 4-11/16 x 1-1/42 2 Triple 18,000 15,500 12,700 9,000 1 x 4 x 8 1-1/4 x 4-11/16 X 1-1/42 2 Quad 24,000 20,700 16,900 12,000 1-1/4 x 4-3/8 x 8-3/4 1-1/4 x 4-11/16 x 1-1/4
Forged Aluminum Triangles and ChokersForged aluminum triangles and chokers are forged from aircraft qualityaluminum alloy that combines the highest strength and durability with thelightness of aluminum. Parts are hand ground and polished to a smoothfinish.
Dimensions (in) Approx. Min. BreakWt. WLL Strength
SS-6H 6 95,400 23,850 6 4-3/4 1-1/8 1-1/4 2-5/8 1 9.8*Do Not Exceed Working Load Limit
Advantages and Benefits of Application Economical,Safety and Time Saving Features• Oblong links and hooks are alloy steel for strength and durability• Better load control and balance. Bridle slings give fixed lifting points
and multiple legs.• Hardware also avoids cutting and wearing of synthetic slings at bear-
ing points.• Red core thread safety warning system helps in ease of inspection
process.• Soft web sling legs help prevent damage to load.• Endless Type of web sling legs can be shifted to rotate wear points...
longer lasting slings.• Sling oblong links and hooks could be revised by adding new web
sling legs if needed.• More ergonomic - lighter weight than chain or wire rope bridle slings.
Tremendous Labor Savings - Time is money. The ease of handling ultra-light Twin-Path® Extra Slings adds up to substantial labor savings, eachand every time the sling is used. There is no need to have an extra crane,forklift or personnel to handle heavy slings.Safety in Lifting and Pulling - Twin-Path® Slings are without a doubt themost inspectable lifting slings available.Tests have shown that Twin-Path® Slings do not recoil at break, therebyeliminating the devastating whiplash effects characteristic of chain, wirerope, synthetic web and rope.Patented Back-Up Protection - Twin-Path® Slings are actually two com-plete and separate slings in one. Each path makes its own separate con-nection between the hook and the load. We do not recommend the use ofdamaged slings, but chances are good that if damage to one of the pathswent undetected that, unlike web slings or round slings, you would havesufficient reaction time to maintain control of the load. Only Twin-Path® pro-vides this security.Early Warning System - Twin-Path® Slings have two independent coversthat are color coded for easy inspection. When the outer cover is cut, thered inner cover instantly becomes visible providing the sling user with avisual alert to remove the sling from service. Only Twin-Path® providessuch a warning and inspection mechanism.Tell Tails - Tell Tails provide a simple means of inspection. Before usingthe sling check that both Tell Tails are showing. If one or both of the tailsare not visible, or are chemically degraded, remove the sling from service.Labeling - Twin-Path® Slings are labeled with a unique hot brandedleather tag. The specifications including model, length, and rated load areclearly legible. This is the best sling tag in the industry. The leather tag ispermanently affixed. It is inflammable and tamper proof. This leather tagoutlasts and outperforms fabric and silk screened vinyl tags.Space Saver - Sometimes space is a scarce commodity. Storage prob-lems are easily resolved as Twin-Path® Extra Slings require substantiallyless space to store than the cumbersome wire rope slings and chainslings that they replace.Versatility - Twin-Path® Extra Slings are easily used in all three sling hitch-es, choker, vertical and basket. Choking loads is no longer a chore.Hitching is made easy because of the free form, and supple body of Twin-Path® Extra Slings. You will never experience “choke-lock” when disengag-ing the sling from the load.Twin Path® Covermax and Twin-Path® Extra Covermax Slings SuperiorAbrasion Resistance - Twin-Path® and Twin-Path® Extra Slings haveorange outer covers that are 100% polyester. These seamless covers arespecially woven to provide superior abrasion resistance. Twin-Path®
Covermax and Twin-Path* Extra Covermax Slings have all the features ofTwin-Path®, and Twin-Path® Extra and more. They have gray outer coversmade from Covermax which are a minimum four times more abrasionresistant than polyester or nylon. Twin-Path® Covermax Slings put aCovermax wear pad in contact with the load at all times. Twin-Path®,Covermax Slings out last all other synthetic slings. So when abrasion andlongevity are a consideration, choose Twin-Path® Covermax and Twin-Path® Extra Covermax Slings. To be sure!Maintenance Free - Twin-Path® Slings, unlike wire rope and chain, do notrequire lubrication or reannealing.
Twin-Path® Slings & Twin-Path® Covermax Overload Indicators - Twin-Path® and Twin-Path® Covermax slings are thefirst and only slings of any kind to be manufactured with built in overloadindicators. If the tell-tails shrink to where 1/2" or less is exposed, this is anindication that the sling has been overloaded, and the sling should beremoved from service immediately.In other words, when 1/2" or less of the tails are visible, this is anIndication that the sling has been overloaded. Round slings and webslings provide no such warning or inspection mechanism before failing orbreaking. This lack of warnIng and inspection device greatly contributes tothe potential for catastrophic failure.Patented Back Up Protection - Twin-Path® and Twin-Path® Covermaxslings are actually two complete and separate slings in one. Each pathmakes its own separate connection between the hook and the load. We donot recommend the use of damaged slings, but chances are good that ifdamage to one of the paths went undetected that, unlike web slings orround slings, you would have sufficient reaction time to maintain control ofthe load. Only Twin-Path® and Twin-Path® Covermax provide this security.Ease of Inspection - The Twin-Path® and Twin-Path® Covermax provide anearly warning mechanism. The load carrying yarns never come into contactwith the load. There is no wear to them as long as the protective outer cov-ers remain intact. Twin-Paths® and Twin-Path® Covermax slings have twoindependent covers that are color coded for easy inspection. When theouter cover is cut, the red inner cover instantly becomes visible providingthe sling user with a visual alert to remove the sling from service, and send
Twin-Path®
SlingsThroughout industrialplants, in utility compa-nies, and on constructionsites, riggers have a needfor soft slings that can lift material and equipment without damage to theload or the sling. Traditionally, this requirement was filled with soft ropeslings, such as manila, nylon, or poly, or with web slings or round slings.Customers began to tell Slingmax® designers the problems they associat-ed with these types of slings. Soft rope slings and web slings became stiffwhen exposed to moisture and sunlight; they were easily cut and could failin a catastrophic manner. Round slings sometimes were cut through thecover which caused unnecessary apprehension in that the sling might dropthe load even if only a few load-bearing yarns were cut. Also, customersseemed to prefer the round sling over the web sling, but they asked for afirmer inspection criteria for the round sling that show red warning yarnswhen the cover is cut. So Slingmax® invented a new group of products callTwin-Path® Slings. These products have the specifications asked for by thecustomers. First, they have two load-bearing paths between the hook andthe load. These equal and separate slings are encased in a double-walledtube. The outer cover is orange and the inner cover is red. If the orangeoutside cover is cut, then the red inside cover will show through, alertingthe inspector to remove the sling from service. Since the sling has a dou-ble load-bearing trail, it can effectively be cut in half and still hold its ratedcapacity. This removes the apprehension of sudden failure associated withother products. Tell tails show the inspector if the sling has ever been over-loaded. This combination of double load-bearing paths, two-color covercontrast and tell tailsmake these the mostinspectable soft slingsever. Twin-Path® Slingsare manufactured withchemical resistant poly-ester throughout up to30 ton vertical capacity.
Twin-Path® Extra SlingsAs the machinery to manufacture Twin-Path® Slings began producing thisnew revolutionary product, another sling was on the drawing board. TheTwin-Path® Extra Lifting Sling has totally turned the rigging world on itsear. This Twin-Path® Extra Lifting Sling is the strongest and lightest liftingsling in the world. Rated capacities range from 5 tons to 100 tons at aweight of about 1/7 that of steel wire rope slings. A recent test for theUnited States Government used a TPX Sling that weighed only 2 lbs., butbroke at 203,000 lbs. The largest capacity Twin-Path® Extra Lifting Slingwould hold over 3,000,000 lbs. before breaking. Other characteristics ofTPX is its low stretch–about 1%–and the load-bearing paths are made ofhigh-performance fibers with good to excellent chemical resistance.Recently a 419 ton ship was lifted with three 721 long Twin-Path® ExtraSlings, and all of the slings combined weighed only 750 lbs. The Twin-Path® Sling and the Twin-Path® Extra Sling designpresents a wider bearingarea to the load, and willlast longer without thecover wearing.
Slingmax®
G-LinksTM
This SLINGMAX® product provides riggers with a multiple-usetool that works well with all synthetic flat slings i.e. Twin-Path®,round and web. G-LinkSTM can be used for bridles, as chokersand to connect slings to each other. G-LinkSTM are easilyinstalled in the field by following the instructions provided.The development of this product was based on the needexpressed by several major corporations. Ford, GM, GE,Westinghouse and others required a fitting that would make syntheticslings as useful as wire rope and chain slings. G-LinkTM is the answer.
Twin-Path®
U.S. Patent #4,850,629 Canadian Patent #1,280,458
The Ultimate Lifting Sling:Provides the strength of steel without the drawbacks of weight, corrosion,and conductivity.
TWIN-PATH® andTWIN-PATH® EXTRASLINGS are also madewith Tell-Tails.Customers want toknow if a sling is over-loaded.
TWIN-PATH®
LIFTING SLINGU.S. Patent #4,850,269 Canadian Patent #1,280,458
Three lightweight Twin-Path®
Extra Lifting Slings, weighingonly 250 lbs. each, were usedin a recent launching of a 419Ton Navy vessel. An equivalentwire rope sling would weighapprox. 1400 lbs.
Twin-Path® & Twin-Path® Covermax Slingsit to the manufacturer for inspection and repair. Damage which exposesthe Inner load bearing yarns is one criteria for immediate removal fromservice for inspection and repair. Only Twin-Path® and Twin-Path®
Covermax assure such a warning system.Superior Abrasion Resistance - Twin-Path® slings have an orange outercover th is 100% polyester. These seamless covers are specially woven toprovide superior abrasion resistance. Twin-Path® Covermax slings have allthe features of Twin-Path® slings and more. They have gray outer coversmade from DuPont Cordura which are a minimum four times more abra-sion resistant than polyester or nylon. Twin-Path® Covermax slings put acordura wear pad in contact with the load at all times. Twin-Path®
Covermax slings outlast all other synthetic slings. Choose Twin-Path®
Covermax slings when abrasion and longevity are a consideration.Versatility - Twin-Path® and Twin-Path® Covermax slings are easily usedin all three sling hitches, vertical, choker, and basket. Choking loads is nolonger a chore. Hitching is made easy because of the free form, and sup-ple body of Twin Path® and Twin Path® Covermax slings. You will neverexperience “choke-lock” when disengaging the sling from the load.Durability - The hook and load contact points of Twin-Path® and Twin-Path® Covermax slings can be continually rotated and reversed to furtherextend not only the life of the protective outer covers, but the overall life ofthe sling. Wire rope slings “remember” their last load and usually becomedistorted after the first lift.Soft and Flexible - Twin-Path® and Twin-Path® Covermax slings adapt toall sizes and types of load configurations. They also easily adapt to fithooks and shackles that might be otherwise too small for alternative slingtypes. Unlike other slings, you never have to be concerned with minimumD to D ratios when using Twin-Path® and Twin-Path® Covermax slings. Aslong as the lifting points are smooth and have the same lifting capacity asthe Twin-Path® and Twin-Path® Covermax sling... NO PROBLEM!Load Protection - Twin-Path® and Twin-Path® Covermax slings afford thesling user with the ultimate degree of load protection,” The strength ofsteel in a velvet glove!” Twin-Path® and Twin-Path® Covermax slings WILLNOT mar, scratch, or deface most delicate metallic surfaces, and areequally gentle on non-metallic loads.Repairable - All Twin-Path® slings are internally inspectable by factory per-sonnel. Unlike other round slings and web slings, all the slings in the Twin-Path® line are repairable and recertifiable.
Twin-Path® Extra Slings & Twin-Path® Extra Covermax Overload Indicators - Twin-Path® Extra and Twin-Path® Extra Covermaxslings are the first and only slings of any kind to be manufactured withbuilt in overload indicators. If the tell-tails shrink to where 1/2" or less Isexposed, this is an indication that the sling has been overloaded, andshould be removed from service immediately. In other words when 1/2" orless of the tells are visible, this is an indication that the sling has beenoverloaded.Patented Back Up Protection - Twin-Path® Extra and Twin-Path® ExtraCovermax Slings are actually two complete and separate slings in one.Each path makes its own separate connection between the hook and theload. WE DO NOT RECOMMEND the use of damaged slings, butchances are good that if damage to one of the paths went undetectedthat, unlike web slings of round slings, you would have sufficient reactiontime to maintain control of the load. Only Twin-Path® Extra and Twin-Path®
Extra Covermax provide this security.Ease of inspection - The Twin-Path® Extra and Twin-Path® ExtraCovermax provide an early warning and inspection mechanism. The loadcarrying yarns never come into contact with the load. There is no wear tothem as long as the protective outer covers remain intact. Twin Path® Extraand Twin Path® Extra Covermax slings have two Independent covers thatare color coded for easy inspection. When the outer cover is cut, the redinner cover instantly becomes visible providing the user with a visual alertto remove the sling from service and send it to the manufacturer forinspection and repair. Damage which exposes the Inner load bearingyarns is one criteria for immediate removal from service for Inspection andrepair. Only Twin Path® Extra and Twin Path® Extra Covermax assure sucha warning system.Super Strong - Ultra Light - Twin-Path® Extra and Twin-Path® ExtraCovermax slings are manufactured with DuPont's Kevlar® 29 Yarn, anincredible material that is many times stronger than steel, at a fraction ofthe weight Twin-Path® Extra and Twin-Path® Extra Covermax are ideal forhelicopter and aerospace applications.Repairable - All Twin-Path® Extra and Twin-Path® Extra Covermax slingsare internally inspectable by factory personnel. Unlike other round slingsand web slings, Twin-Path® Extra and Twin-Path® Extra Covermax Slingsare truly repairable.Extreme Temperatures & Electrical Currents - DuPont’s Kevlar® Yarnactually becomes stronger when exposed to cold temperatures. Moisture
combined with sub zero temperatures renders most synthetic productsrigid and non-pliable. Kevlar® does not absorb moisture to the samedegree as does nylon and polyester fiber. Kevlar products actually “shed”moisture to remain soft and flexible. At the other end of the scale KevIar®
Yarn withstands temperatures of up to 800 degrees F. and self extinguish-es when exposed to flame. KevIar® is inherently non-conductive. As such,it prevents stray currents from welding operations from damaging thecrane motor. Twin-Path® Extra and Twin-Path® Extra Covermax slings areIdeal for lifting and positioning electrical equipment.Nuclear Environments - The performance of Kevlar® fibers In nuclearenvironments Is detailed In a report titled, “Radiation Effect on OrganicMaterials in Nuclear Power Plants” (Report #EPRINP 2128, dated Nov.1981). When Kevlar® as exposed to radiation at the level of 1,000,000,000rads, there was no effect on the fiber. Twin-Path® Extra and Twin-Path®
Extra Covermax slings are well suited to use in nuclear generating sta-tions.WARNING! Twin-Path® round slings can be cut by contact with sharp or unprotectedload edges. Padding must be used to protect the sling.
TWIN-PATH® SLINGS SAFETY INFO.Mechanical Considerations1. Determine the weight of the load. The weight of the load shall be with-
in the rated capacity of the sling.2. Select a sling having suitable characteristics for the type of load, hitch
and environment.3. Slings shall not be loaded in excess of the rated capacity.
Consideration shall be given to angle of lift which may affect the liftingcapacity. Diameters of pins and sharp edges also may affect thecapacity of the lifting sling.
4. Slings used in a choker shall not be forced to tighten around the loadby pounding with hammers or other objects. Choker hitches are theleast effective way to use a sling based on capacity. Two chokers shouldbe used to balance the load. One choker in the center of the load maycreate an unbalanced situation which could lead to an accident.
5. Slings used in a basket hitch must have the load balanced to prevent slippage and accidents.
6. Slings used with fittings shall be compatible with the fittings used. Thelifting capacity shall be rated at the lower of the fitting or sling. Fittingopenings shall be of the proper shape and size to assure that thesling will seat properly.
7. Slings shall be protected from cutting and sharp edges. All sharp pro-trusions and abrasive surfaces will be kept from contact with the slingwhere poor situations develop padding shall be interjected betweenthe sling and the load.
8. Slings shall not be dragged on the floor or drawn across other sur-faces which may damage the sling.
9. Slings shall not be twisted or tied in knots to shorten.10. Slings shall not be pulled from under loads resting on the sling.11. Do not drop objects on slings or run over them with vehicles.12. Slings which are damaged shall not be used.13. Sling hitches must provide control of the load.14. Portions of the human body shall be kept from between the sling and
the load and from between the sling and any attachment to liftingdevices such as hooks.
15. Personnel shall stand clear of suspended loads.16. Personnel shall not ride on the sling or suspended loads.17. Avoid snatch or shock loading.18. Twisting and kinking the legs of the sling shall be avoided.19. Load applied to the hook should be centered in the bowl of the hooks.
Do not point load the hook.20. During lifting with or without the load all personnel shall be alert for
possible snagging.21. The slings should contain or support the load from the sides above
the center of gravity so that load will not tilt when the load is lifted.22. Slings shall be of the proper length so that the angle of the sling to
the load does not reduce the rated capacity of the sling for a givenangle.
23. Only legibly marked or labeled slings should be used. If the tag is notlegible, or missing, the sling should not be used.
24. Keep labels or tags away from the load, the hook and the angle ofchoke.
25. Twin-Path® Slings should be inspected each time before each lift.
Inspections of Twin-Path® Products1. Tell-Tails should extend past the tag area of each sling. If both Tell-
Tails are not visible remove the sling from service. If the Tell-Tailsshow evidence of chemical degradation, remove the sling from serv-ice. Send to manufacturer for repair evaluation.
2. Slings should be inspected for evidence of cutting or tearing of theouter cover. Slings with cuts should be removed from service and sentback to the manufacturer for repair evaluation. Damage to the covermay indicate core damage.
3. Inspect slings for evidence of heat damage. Slings with polyester orCovermax covers should not be exposed to temperatures above82OC/180OF. Aramid covered Sparkeater Slings should not be exposedto temperatures over 149OC/300OF. Slings with HDPE Olefin coresshould not be exposed to temperatures above 65OC/150OF. K-SpecCore Slings should not be exposed to temperatures above82OC/180OF. Cold temperature exposure down to minus -40OC/minus -40OF do not effect the strength of the products. Other temperaturesshould be referred to the manufacturer.
4. Slings using aluminum fittings shall not be used where fumes, vapors,sprays, or mists of alkalis or acids are present.
5. Twin-Path® Lifting Slings and any fittings attached should be the sub-ject of frequent and regular inspections. In addition to the initialinspection by a competent person and frequent written inspectionsthe slings should be visually inspected before each use.
6. Written inspections should be performed each 30 days and docu-ments of such inspection by a competent person shall be kept on filein the safety department of the plant or site where used. Inspectionsmay be done more often based on frequency of use, severity of con-ditions. experience of past service life.
7. Slings should be examined throughout their length for abrasion, cuts,heat damage, fitting distortion or damage, tag legibility, and if anydoubts are held by the inspector the sling should be removed fromservice. Core integrity is determined by hand inspection of the entiresling or by fiber optic light transfer if this type of tell-tail is installed inthe sling. If a deterioration is found, the sling must be removed fromservice and returned to the manufacturer for evaluation.
8. Slings removed from service that are not capable of repair should bedestroyed and rendered completely unfit for future use.
9. Abrasion, heat damage or cuts to the cover may indicate a loss ofstrength to the load core and these slings should not be used untilevaluated by the manufacturer. At area of damage cover should beopened and the core yarns counted and visually inspected.
Testing Procedures 1. For proof testing the pins shall be 2" diameter or larger.2. Proof tests shall consist of pulling the slings to twice their rated
capacity as shown in the appropriate tables. Slings shall be heldat the proof test limit for a period of 15 seconds and then the ten-sion may be released.
3. Testing of Twin-Path® Sling products and load yarn shall be on acertified and currently calibrated testing machine, which meets orexceeds the standards as described in ASME E4.
4. Break testing of slings shall be as above with results documented.A minimum design factor of five is mandatory. Pin size for testingshould be a maximum diameter equal to half the sling width.
5. Proof testing is recommended for every sling.6. After the sling is proof tested the Tell-Tails should then be
trimmed to length prior to shipment.7. Repaired fittings or slings shall be proof-tested before they are
returned to service.These recommended standard specifications have been formulated as a guide tousers, industry and government to insure the proper use, maintenance and inspectionof Twin-Path® lifting sling products.
Chars at Chars atMelting Point 460O F 480O F 330O F 297O F 800O F 297O FCriticaI4 Temp. 180O F 180O F 180O F 150O F 300O F 180O FSpecific Gravity 1.14 1.38 .91 .97 1.44 1.2
Cold Flow Negligible Negligible Negligible Negligible Negligible Negligibleto high to high
Environmental Considerations1. When not in use, slings (Twin-Path®) should be stored in a clean dry
place. Heat sources and non-ventilated places should be avoided.2. Chemically active environments can affect the strength of Twin-Path®
Lifting Slings. Different chemicals will react with different exposure toCovermax Bulked Nylon, polyester, aramids, and Olefins. Please seethe enclosed tables for reactions of specific chemicals.
ARAMIDS are resistant to most ketones, alcohols, dry cleaning solvents andmany other organic solvents. Aramids show good resistance to alkalis atroom temperature, but is degraded by strong alkalis at higher temperatures.Aramids are resistant to most weak acids and alkalis, ketones, alcohols,hydrocarbons, oils and dry cleaning solvents. Strong acids and bases andsodium hypo-chlorite bleach attack aramids, particularly at high tempera-tures of high concentrations.Aramids are compatible with fluorine-containing elastomers, resins, andrefrigerants at high temperatures, and are resistant to fluorine compoundsin high concentrations.The resistance of aramids to oxides of sulfur at temperatures above theacid dew point is superior to that of polyester. Below the dew point, con-centrated sulfuric acid may condense on the fiber and cause a progressiveloss in strength.In moderate to strong acid alkalis environments, evaluation of aramidsshould be made to ensure that the yarn will perform acceptably before use.POLYESTER and NYLON are not significantly affected by most com-pounds of the following classes: Alcohols, Dry Cleaning Solvents,Halogenated Hydrocarbons, Ketones, Soaps and Synthetic Detergents,and Water (including Sea Water).Polyester also shows good to excellent resistance to aqueous solutions ofmost weak acids at the boll, and to most strong acids at room tempera-ture, but is disintegrated by concentrated (95%) sulfuric acid at room tem-perature. Aqueous solutions of strong alkalis at room temperature, but isdegraded at the boil. Oxidizing agents, and is not degraded by bleachingtreatments ordinarily used for textiles.Nylon is not significantly affected by most aldehydes, alkalis, ethers, orhydrocarbons, but is deteriorated by dilute acids (e.g., hydrochloric acidand sulfuric acid in 10% concentrations at room temperature cause a noticeable loss in breaking strength in 10 hours).Solvents for nylon include: concentrated formic acid, Phenolic compoundsat room temperature, calcium chloride in methanol at room temperature,hot solutions of calcium chloride in Glacial Acetic Acid, EthyleneChlorohydrin, and Ethylene Glycol, hot solutions of zinc chloride inmethanol, and Benzyl alcohol at the boil.HDPE has excellent chemical resistance (100% strength retention) after 6months immersion in the following liquids:
Sea Water 10% Detergent SolutionHydraulic Fluid KerosenePerchlorethylene Glacial Acetic AcidToluene Gasoline5M Sodium Hydroxide Ammonium Hydroxide (29%)Hypophosphite Solution (10%) 1M Hydrochloric AcidHDPE has a 91% strength retention after 6 months immersion in Clorox®.
K-Spec core yarn strength retention is based on test results of compo-nents at 650C/150OF (or less) for 6 months. K-Spec has a 100% strengthretention when exposed to: age, 10% detergent solution, rot and mildew,sunlight and Toluene; 99% strength retention when exposed to: acetic acid,gasoline, hydrochloric acid 1m, hydraulic fluid, kerosene, and sea water;98% retention when exposed to: 25% ammonium hydroxide, 10%hypophosphite solution, and 40% phosphoric acid; 97% retention whenexposed to 5m sodium hydroxide; 95% retention when exposed to Portlandcement and sulfuric acid; and 88% retention when exposed to Clorox® andnitric acid.
Fiber Characteristics(Using Nylon as basis of 1.0)1Bulk Strength is defined as strength per circumference squared. 2Workingis defined as rope actually in use under a cycling load. 3Co-efficient of fric-tion Is based on reluctance to slip or slide. 4Critical temperature is definedas the point at which degradation is caused by temperature alone.Cold-Flow (Creep) is defined as fiber deformation (elongation) due tomolecular slippage under a constant steady static loading situation. Fibersthat have this inherent characteristic will display extremely low or negligiblecreep if minor fluctuations occur in the rate and/or frequency of load levels.In rope form, this would apply to polypropylene, polyethylene and HDPEOlefin fibers.
Twin-Path® Slings• Twin-Path® Slings are constructed of polyester load
carrying yarns.• The load carrying yarns are protected by two inde-
pendent, seamless, color coded, polyester covers.• The internal red cover is protected by the outer
orange cover.• The sling cover is fabricated in such a way that it is
actually two complete and separate slings in one.Each path makes its own separate connectionbetween the lifting hook and the load. This uniqueback up system is designed to provide the sling userwith sufficient reaction time to maintain control of theload if damage to one of the paths went undetected.
Twin-Path® Covermax Slings• Twin-Paths® Covermax Slings are constructed of poly-
ester load carrying yarns.• Gray Tag Patch - Polyester Load Yarns.• Tell Tails - When Twin-Path® and Twin-Path® Covermax
Slings are loaded beyond their rated capacity, theindicator tails shrink until they finally disappear underthe cover.
• The load carrying yarns are protected by two inde-pendent, seamless, color coded covers.
• The internal polyester red cover is protected by anouter gray cover of Covermax nylon.
• Sleeves can be sewn around the body of the sling sothat they can be positioned to the areas where theyare needed.
Polyester Cover – Covermax CoverA leather tag contains required Information - and the Flag Tag containsthe Vertical Capacity in Large Readable Characters.
TWIN-PATH® & TWIN-PATH® COVERMAX SPECIFICATIONSCanadian Patent #1,280,458 United States Patent #4,850,629
PLEASE NOTE. Capacities shown include both paths and are for one complete sling. Ratingsbased on straight pin diameter one-half the sling width.• DO NOT EXCEED RATED CAPACITY • METRIC CAPACITIES AVAILABLEWARNING! Can fall If damaged, misused or overloaded. Inspect before use. Use only Iftrained. Observe rated capacity. Avoid sharp edges and exposure to acid, alkalis, sunlight andtemperature over 180O F. DEATH or INJURY can occur from Improper use or maintenance.
0O 60O 45O
Twin-Path® & Twin-Path® Covermax Slings
PLEASE NOTE. Capacities shown include both paths and are for one complete sling. Ratingsbased on straight pin diameter one-half the sling width.• DO NOT EXCEED RATED CAPACITY • METRIC CAPACITIES AVAILABLEWARNING! Can fail if damaged, misused or overloaded. Inspect before use. Use only iftrained. Observe rated capacity. Avoid sharp edges and exposure to acid, alkalis, sunlight andtemperature over 180O F. DEATH or INJURY can occur from improper use or maintenance.
Twin-Path® Extra Slings• Twin-Paths Extra Slings are constructed of high per-
formance load carrying yarns.• The load carrying yarns are protected by two inde-
pendent, seamless, color coded, polyester covers.• The internal red cover is protected by the outer orange
cover.• The sling cover is fabricated in such a way that it is
actually two complete and separate slings in one.Each path makes its own separate connectionbetween the lifting hook and the load. This uniqueback up system is designed to provide the sling userwith sufficient reaction time to maintain control of theload if damage to one of the paths went undetected.
Twin-Path® Extra Covermax Slings• Twin-Path® Extra Covermax Slings are constructed of
high performance load carrying yarns.• Orange Tag Patch - High Performance Load Yarns.• Tell Tails - When Twin-Paths Extra and Twin-Path®
Extra, Covermax Slings are loaded beyond their ratedcapacity, the indicator tails shrink until they finally dis-appear under the cover.
• The load carrying yarns are protected by two inde-pendent, seamless, color coded, covers.
• The internal polyester red cover is protected by anouter, gray cover of Covermax nylon.
• Sleeves can be sewn around the body of the sling sothat they can be positioned to the areas where theyare needed.
Polyester Cover – Covermax CoverA leather tag contains required Information - and the Flag Tag containsthe Vertical Capacity in Large Readable Characters.
TWIN-PATH® EXTRA & TWIN-PATH® EXTRA COVERMAX SPECIFICATIONSUnited States Patent: #4,850,629 Canadian Patent: #1,280,458
BUFFALO SLINGSingle Path - Endless Polyester Round Slings• A flexible solution to your lifting needs.• Rotation of lift points extends service life of sling.• Length measure from Bearing Point to Bearing Point• Two same color polyester tubular jackets.• The economical choice!
WARNING! DO NOT exceed rated capacities.When slings are used at angles of less than 90° from horizontal ratings must be reduced.
Twin-Path® Sparkeater Slings provideexceptional thermal stability and canwithstand temperatures up to 300O F/149OC. Aramids are inherently non-conductive. They prevent stray cur-rents from welding operations fromdamaging the crane motor, wire ropeor hoist chain.U.S. Patent #4,850,629 Canadian Patent#1,280,458
• The outer yellow cover is made from a high tempera-ture resistant aramid fiber.
• All load bearing fibers are made from an aramid fiberknown for its extra high tenacity, modulus, low stretchand non-conductive properties.
• An inner red cover contrasts with the outer yellowcover for easy early warning safety alert.
• Two separate paths make their own separate connec-tion between the hook and the load. This is back upprotection found only in Twin-Path® products.
Approx.Rated Capacities (lbs) Wt.
Width Stock (lbs. per ft.)(in) No. Choker Vertical Basket (Bearing-Bearing)
EE – This product is made to be an eye and eyesling only. Usually an eye and eye sling is madefrom a round sling with a sleeve over it to form theeyes at each end. This sling is light, strong andless expensive than a round sling with a sleeve. Itcan be manufactured using either K-Spec® coreyarn or polyester. Riggers have told us that theyhave some applications where they want an eye &eye sling only & this is the one with all of the Twin-Path® features in a strictly eye & eye product.
TPXA (with K-SpecTM) or TPA (with polyester) This tool is anaid to finding the center of gravity. When the load is liftedthe ring moves over the COG to balance and level theobject. We developed this tool in conjunction with riggers inthe field for lifting objects with uneven geometric proportionsor off center balance points. The Twin-Path® Sling may bepermanently attached to the ring or in the field using a G-LinkTM for the connection. The G-LinkTM or the permanentattachment keeps the slings in the same plane as the ringwhich is the ideal form of connection.
Single Approx. Adj. Ring Dim. (in) Shackle Dim. Sling Wt. (lbs)Bridle Sling Ring Main Hook Ring Nominal Approx. Approx.
TPA Cap Width Stock Area Area Shackle WLL 3 Ft. AdderCode (lbs) (in) Dia. (width) (lgth) Size (in) (ton) Base Per Ft.TPA 6 6,000 2 1/2 2-1/2 2-1/2 5/8 3-1/4 T 4.40 1.35
Note: Capacities shown include both parts and are for one complete assembly.
CornerMaxTM Wear Pads(Patent Pending)Abrasion protection requires a wear pad to pro-tect a length of sling from exposure to a wideabrasive surface, such as concrete. Exposure ofthe sling to a sharp comer requires a wear padthat is not susceptible to cutting.After isolating the difference in the require-ments, it was apparent that our Synthetic ArmorWear Pad was adequate for abrasion protection.A new type of wear pad was developed toimprove the protection of the sling whenexposed to steel comers, the CornerMaxTM wearpad. The principle behind this invention is theformation of a tunnel between the pad and theedge, greatly reducing the possibility of cut-ting.• Photo shows formation of a tunnel between the
steel edge and the CornerMaxTM wear pad.
Magnetic Aluminum CornerProtectorMade to order based on diameter and width require-ments. These aluminum protectors attach with mag-nets to steel corners and keep the surrounding slingfrom contacting the load. just snap it in place and putthe sling into the protected area.
NEW! A multi-use coupler specifically designedfor connecting hardware to web, round or TwinPath® slings. This versatile patent-pending cou-pler can be used to connect two slings togeth-er, as a sliding choker hook or as a two leg bri-dle! Always use G-LinksTM of correct width andrated capacity.
WARNING! Can fail if damaged misused or overloaded.Inspect before use. Use only if trained. Observe ratedcapacity. DEATH or INJURY can occur from improperuse or maintenance.
Two G-LinksTM used together will double therated capacity of one G-LinkTM
HookAttachment
G-Links/Optical Tell-Tails/Wear Pads
Twin-Path® Slings & Optical Tell-TailsReflection of lightfrom this end
A flashlight showninto this end
This sling contains optical Tell-Tails that enable the inspector to test the integrity of the core yarns. If the Tell-Tails do not extend past the tag it may indicate severe overloading and the sling should bereturned to the manufacturer for evaluation. A flashlight shone into oneoptical Tell-Tall will reflect from the other if the core yarns are intact. If thelight does not pass from one Tell-Tall around the inside of the sling and outthe other Tell-Tall, remove the sling from service and return it for repairevaluation. Patent Pending.Slings should be inspected for evidence of cutting or tearing of the outercover. Slings with cuts should be removed from service and sent back tothe manufacturer for repair evaluation. Damage to the cover may indicatecore damage.Inspect slings for evidence of heat damage. Slings with polyester andaramid cores with polyester or Covermax covers should not be exposed totemperatures above 82OC/180OF. Aramid covered Sparkeater Slings shouldnot be exposed to temperatures over 149OC/300OF. Slings with HDPEcores (Olefin) should not be exposed to temperatures above 66OC/150OF.Cold temperature exposure down to minus 40OC/minus 40OF does noteffect the strength of the products.Slings using aluminum fittings shall not be used where fumes, vapors,sprays, or mists of alkalis or acids are present.Twin-Path® Lifting Slings and any fittings attached should be the subject offrequent and regular inspections. In addition to the initial inspection by acompetent person and frequent written inspections, the slings should bevisually inspected before each use.Written inspections should be performed every 30 days and documents ofsuch inspection by a competent person shall be kept on file in the safetydepartment of the plant or site where used. Inspections may be donemore often based on frequency of use, severity of conditions, experienceof past service life.Slings should be examined throughout their length for abrasion, cuts, heatdamage, fitting distortion or damage, tag legibility, chemical deterioration, andif any doubts are held by the inspector the sling should be removed fromservice. Core integrity is determined by hand inspection of the entire sling orby fiber optic light transfer if this type of tell-tail is installed in the sling.If a deterioration is found, the sling must be removed from service andreturned to the manufacturer for evaluation.Slings removed from service that are not capable of repair should bedestroyed and rendered completely unfit for future use.
Synthetic Armor Wear PadsWear Pads protect loads and slings. These wear pads contain aramidsand can be made ready to use in any length or width to fit wire rope,chain, nylon webbing, or any regular rope or sling product. They can alsobe made in long lengths which the customer can cut into suitable sizes onthe job. Double or triple thicknesses provide cut resistance for the mostsevere conditions.
Styles Available:• SYNARM-SL is a sliding wear pad around the sling body with sewn
seams along both edges.• SYNARM-RM is a removable wear pad with a sewn seam on one edge
and a hook-and-loop fastener along the other edge.• SYNARM-EE is a wear pad that fits over both legs of a Twin-Path® sling
to enable it to be used like an eye-and-eye sling (NOTE: this type ofwear pad should be removed after each use so that the sling tag will bevisible before each subsequent use and to permit the bearing points ofthe sling to be changed for each use).
WIDTHS AVAILABLE: no maximum width - wear pads are assembledfrom 2" to 14" wide material and are sold by the running foot of length.
Assembly show below is beingused to unload over 1,000 tonsof steel per day. TPXC sling is16ft. long with a double thicksynthetic armor wear pad.
The Importance of Wear PadsCutting is the number one cause of synthetic sling failure. If a cut sling isin use, property damage, personal injury or death can result. WEAR PADSact as a buffer between the load edge and the sling itself, greatly reducingthe chance of cuts occurring.WEAR PADS used on steel slings assist in protecting the sling and loadfrom damage along points of contact.There are w ear pads available for all types of slings:• Flat Stitched Sleeve using Extra Duty Series 9800 Webbing• Flat Fast Sleeve using Extra Duty Series 9800 Webbing
Wear Pad Materials• Rough Rider leather wear pad – 5/32" thick to protect your sling.• Shark-Skin heavy duty nylon webbing 3/16" thick.• TWP – Thick White Pad – 3/8" cut resistance. Synthetic felt with high
density.NOTE: Other materials are available for use as wear pads. Please contactus with your exact requirements
Cut Test Pad materials were subjected to cut testing. The attached chart providesthe results. Note that the density padding increases the sling cut resist-ance by a minimum for 20%
*The cutting edge was established by utilizing a 1" thickplate. A 45° angle was machined on each side of theplate with a radius of less than .016". No sliding wasallowed of the slings. The results indicate the pad protection when the slings are loaded against this edge.
WARNING! Wear pads are not a guarantee against cutting or other sling damage. To avoidpersonal injury or death, keep all personnel clear of loads about to be lifted and suspendedloads.