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CONTACTCONTACT USUS

MACHINERY LISTMACHINERY LIST

CLIENTS LISTCLIENTS LIST

PROFILEPROFILE

ABOUT USABOUT US

E.P.C. PROFILEE.P.C. PROFILE

HISTORY

STERLING STRIPS LIMITED was incorporated on 22nd October 1984 as a PrivateLimited Company under the provisions of the Companies Act 1956, in India.The primary objective of setting up this engineering company was formanufacturing of oil/gas fired industrial boilers.

The key promoters of the company were Mr. S. Venkata Subramanian andMr. Premchand Shah.

The Company manufactured more than 400 industrial boilers and Waste HeatRecovery Boilers in technical collaboration with Siller & Jamart, Germany,covering a wide range of steam generation capacity and installed the sameencompassing all the leading business houses in India. The Company alsohad occasion to export it’s boilers/boiler components to Saudi Arabia, Dubai,Thailand and Nigeria. Thus the quality of the boilers manufactured by thecompany found wide acceptability.

To garner funds to expand it’s boiler manufacturing capacity, the companywent in for a public issue of it’s shares in 1994, prior to which the company hadobtained the status of a Public Limited Company, on 19th October 1994, underprovisions of the Companies Act 1956 in India. Our company is listed on theBombay Stock Exchange with the shares being widely held by the public.

The philosophy to obtain the status of a Public Limited Company was based onrunning the company by professional management, who would function on acode of ethics. This philosophy is ingrained and imbued in the entire workforceof the company. For healthy and steady growth, the management of thecompany was of the opinion that professionalism was essential.

With the onset of the boom in the capital goods industry and new industrialprojects, leading to a situation where major manufacturing companies wererequired to outsource their requirements, the management of our companytook a conscious decision to focus on two key areas viz :i)Execution of projects on EPC (Engineering, Procurement & Construction) basisii) In house API grade Spiral Pipe Manufacturing Activities

BOARD OF DIRECTORS

1. Mr. S. Venkatasubramanian - Chairman & Managing Director.

2. Mr. Deepak Kumar Shah - Director

3. Mrs. V. Rajlaxmi. - Director

4. Dr. M. G. Gharpure - Director

5. Mr. Rajesh U. Deshpande - Director

6. Mr. Bakul Shah - Director

Mr. S. Venkata Subramanian (C.M.D)worked with M/s. Thermax Ltd., Mumbai till 1984 as Service Executivelooking after erection and commissioning of Industrial Boilers andIncinerators. Self motivated in business, he has grown as an entrepreneurhaving sound technical knowledge and strong managerial and BusinessManagement capabilities. He has widely travelled in India and abroadand is fully updated on all the development in this field. The entire designof Smoke Tube Package Type and Water Tube High Pressure Boilers andGas Producer Plants have been developed by him along with a team ofefficient design & development engineers and technical collaborators.

Mr. Deepak Kumar Shah(Whole time Director)

is a dynamic businessman, with vast experience in the manufacturingand trading set-up of the steel & textile industries and has a strongcommercial background.

Dr. M. G. Gharpure(Director)

is a PhD (Chemical Engg.) from IIT Bombay by qualification and has gotvast experience of more than 20 years in the field of energyconservation & audit and is considered an authority on the subject ofenergy audit. He has provided innovative solutions to leadingmultinational companies on the energy conservation front. He has in-depth knowledge of coal gasification and the technology to tap the vastpotential of renewable forms of energy.

Mr. Rajesh .U. Deshpande(Director)

is a B-Tech (Chemical Engg.) and MMS by qualification and has got vastexperience of around 20 years in the field of energy conservation andbusiness management. In the course of his profession he has beenassociated with industry both in India and abroad and conductsextensive seminars on the intricacies of funding of energy conservationprojects.

Mr. Bakul Shah (Director)

is a Chartered Accountant by qualification and has got vast experienceof more than 20 years in the field of Finance & Accounts.

Mr. A. K. Gadway (V.P.Technical)

DME (Mech), is a widely experienced person, having worked in manyprestigious companies such as IAEC Boilers, Kilburn Engineering, andLloyds Steel, in the fields of manufacturing, testing and inspection. Hewas responsible for a number of boilers rotary kilns and Caustic SodaPlant installations.

Mr. Dinesh Agarwal(V.P.Finance)

ACA, ACS is an experienced Chartered Accountant and CompanySecretary and lends his strength not only to the company’s finance andaccounts but also to the company’s efforts to provide comprehensivefinancial services as part of it’s turnkey offer for client’s projects.

Mr. M Arunachalam (Sr.Executive Projects)

B.Sc, has 10 years experience in Designing & Execution of MiniIntegrated Steel and Captive Power plants. Also he has expertise inareas of Erection, installation and commissioning of industrial boilers ,structural fabrication , and other equipments.

Mr. Amit .K. Chakraborty (Business Executive)

BE (Mech.) with 11 years experience in Energy Conservation & Project Co-ordination.

Mrs. Kiran .R. Shelar(Administration Executive)

Ms. Ashwini Khadtare(Accounts Executive)

Mr. Sanjay Jadhav(Accounts Manager)

B com , M.B.A with 10 years experience in Supervision & Maintaining of day to day Accounts along with statutory compliances .

Mr. Pundlik Davane(Works Manager)

B.Sc, has 15 years experience in Production at the shopfloor, and is responsible for the Quality and timely delivery ofthe finished goods .

SCENE

i) EXECUTION OF PROJECTS ON EPC BASIS:A. MINI INTEGRATED STEEL PLANT FOR MAKING CONSTRUCTION BARS AND

STRUCTURAL STEELS.The worldwide spurt in demand for steel, is now to common

knowledge. Steel is manufactured from either scrap or sponge iron. Gulf regionis blessed with plenty of fuel oil and abounded availability of good qualitymelting scrap which is now banned for exporting out of gulf countries. Insteadof importing steel bars for construction it makes lot of sense to recycle themelting scrap most economically and use it for self consumption.

Our company saw the vast opportunity of setting up of mini integrated steelplants, which involves engineering services, efficient procurement and systemintegration, which has always been the area of strength of our company. In thisendeavor, we have the technology back-up of M/s. Mukand Ltd, a 50 year oldcompany manufacturing alloy steels and having it’s own machine buildingdivision to manufacture in-house the equipment for their steel division. Ourefforts in this direction were rewarded and we were awarded a Greenfieldproject to set up a 100 Ton per day sponge iron manufacturing unit, in INDIA,

on EPC basis for an order value of USD 3 Million and the same has beenexecuted by us to the entire satisfaction of our client. Based on ourperformance the same client awarded us to set up their 150 TPD mini steelplant for manufacture of construction bars at Doha, Qatar and the project willbe completed by end of current financial year.

B.) CAPTIVE POWER PLANT

Energy is the prime requirement for running any kind of industry andsteel industry requires huge amount of power. Power crisis has also madeWaste Heat Recovery an area of priority for industry. Our company hasprovided captive power plants based on waste heat recovery as a solution totheir power problems. Till date we have supplied thermal power plant basedon coal as a fuel up to 4 MWe for a number of clients in India.

For our client M/s Standard Alkalies, Mumbai we have done thecomplete erection and commissioning of 3 X 11.5 MWe MAN-BMW enginesbased power plants in the year 1997.

To provide our clients the best possible choices we have tied up with M/sWatsila and MAN-BMW for new DG based Power Plants. Keeping in view thelong gestation period required for new DG power plant ranging from 24 to 36months. We have tied up with M/s Rotomac, UK, for arrangement of used DGsets based on which power plant can be installed well within 1 year. We havewith us a data base of more then 1000 DG based power plant and hence asper client’s need we can relocate the same at quickest possible time.

The concept of EPC provides the client a holistic solution for his requirementand this concept is finding favour. As a package deal, we not only erect andcommission the plant but also run the plant for a minimum period of 1 year toprove the product quality, profitability and thereby ensuring investor’s return oncapital. This has led us to spread our wings towards international exposure.

ii) IN HOUSE API GRADE SPIRAL PIPE MANUFACTURING ACTIVITIESSterling is in the process of API grade spiral and L saw pipe mill at

Murbad Mumbai works. The size and range of pipes right from 500 MMdiameter and 6 mm thickness up to 3000mm diameter and 40mm thickness.The project will be completed by end March, 2010. To complete the aboveproject we have technical tie-up with M/s ABtech Machineries & EngineeringServices Corporation, Philippines.

OUR ASSOCIATES:For smooth execution and timely completion of our EPC projects we have tiedup with our following associates experts in their respective fields.

MUKAND LTD., MUMBAI (Machine Building Division)

INDUSTRIAL MANUFACTURERS, MUMBAI

FAB TECH WORKS & CONSTRUCTIONS, MUMBAI

BASIC INFRASTRUCTURE The Company has a fully equipped manufacturing facility at A/8-4, MaharashtraIndustrial Development Corporation (MIDC), Murbad, which is located at a distance of60 Kms. from Mumbai in INDIAAREA :-

1) LOCATION : MIDC, MURBAD, MAHARASHTRA

The total plot area of the works is 4,112 Sq. mtrs.The constructed area of the plot is around 3,000 sq mtrs consisting of 2 Bays. Onebay having 15 mtrs width and 85 mtrs length, equipped with 2 Nos. x 15 Ton capacityEOT cranes and the other bay having 15 mtrs width and 85 mtrs length, is equippedwith 2 Nos. x 10 Ton capacity EOT Crane.

2) LOCATION : CSIDC, RAIPUR, CHATTISGARH STATEThe total plot area is 5,855 Sq. mtrsThe built up area is 2393 Sq. mtrs and the balance is open space.

3) ADMINISTRATIVE OFFICEThe company has a well equipped office at Mulund, Mumbai, the commercial capital ofIndia.

POWER : -The company’s works at Murbad, has a total connected load of 198 KW with it’s owntransformer and distribution system.

WATER : -For the company’s works at Murbad, water supply from the Maharashtra IndustrialDevelopment Corporation (MIDC) is available in abundance.Availability of power and water at the company’s plot at CSIDC, Raipur, ChhattisgarhState, is also adequate.

EPC PROJECT EXECUTIONOur diverse expertise and talents enables us to offer our clients the complete

range of engineering, procurement and construction (EPC) services that bridge all theclients needs. STERLING takes single point responsibility for managing all elements ofproject execution viz; basic and detail engineering, procurement, plant construction,erection, start up, commissioning and post commissioning services. For each project,STERLING comprise of a unique team of highly qualified and experienced projectmanagers, engineers and procurement and construction specialists that covers thefollowing major areas:1) Site survey and soil investigation 2) Design and detail engineering 3) Civil engineering and structural engineering work 4) Supply of plant and

equipment 5) Contract Engineering 6) Inspection and expediting 7) Construction management 8) Project monitoring and control 9) Erection and trial run 10) Commissioning services 11) Demonstration of performance guarantee parameters 12) Post commissioning services

STERLING is actively engaged in providing EPC services in following areas:-IRON MAKING & POWER PLANTS : Project conceptualization and turnkey execution of Integrated Steel Plants & Captive Power Plants along with its auxiliary systems.

PRODUCTS & SERVICESSite Selection Report

Project Proposal Report

Techno Economic Feasibility Report

Detailed Project Report

Techno Economic & Management Advisory Services

Environmental Engineering

Detailed Engineering

Tendering & Procurement Services

EPC Project Execution

Construction Management

Project Management

QA & Inspection / Expediting of Plant Equipment

Commissioning & Plant Start-Up Assistance

SITE SELECTION REPORT

Visit of site for collection of site related data.

Assessment of raw material availability.

Assessment of infrastructural facilities like water, power, rail, road and port

Estimation of differential costs

PROJECT PROPOSAL REPORT

Tentative finalization of the process route

Tentative product-mix

Broad major technological and auxiliaries facilities

Indicative requirement of raw materials

Indicative requirement of services

Indicative requirement of land

Estimation of tentative capital costs

TECHNO-ECONOMIC FEASIBILITY REPORT

Finalisation of product-mix

Finalisation of site

Finalisation of process route

Development of project concept along with process-cum-material flow

Finalisation of services and infrastructures requirement

Estimation of capital costs, production costs and financial parameters

TECHNO-ECONOMIC & MANAGEMENT ADVISORY SERVICES

Strategic Planning

Project appraisal / Evaluation & Environmental engineering

Organizational Diagnostic Studies

Baseline Socio-economic Studies

ENVIRONMENTAL ENGINEERINGFinalisation of pr Base line data generation

Project Specific EIA/EMP for Environmental Clearance by SPCBs / MoEF

Regional EIA Study

Carrying capacity and Sustainable Development studies

Planning for development of green belt for attenuation of noise and fugitive dust emissions Safety audit, risk / hazard studies and disaster management plan (both on-site and off-site) Toxic and hazardous waste inventory & management and solid waste disposal

Environnemental Audit, Env. Statement & Env. Mgt. Systems, ISO:14001

Clean development mechanism

Industrial effluent treatment & domestic sewage treatment Disposal system, dust extraction and dust suppression systems, and other

DETAILED ENGINEERINGFlow sheet & material balances Shops layout / plant unit layout drawings P & I diagrams Approval of drawings / data sheets / schemes from technology & equipments supplier

Selection of Plant & Equipment

General arrangement drawings

Detailed drawing for civil, structural, architecture, electrical, piping, inter connecting service facilities

Tender specification

Detailed working drawings for construction, erection & commissioning

Engineering for adhering to pollution control norms

CONSTRUCTION MANAGEMENT

Site survey and soil investigation Site preparation Enabling works Store & inventory management Construction planning Time & cost management Contract administration Civil and structural works Shut down planning Supervision of construction and erection Measurement and certifications Safety & Security Management Quality management

PROJECT MANAGEMENTNetwork planning Quality assurance

Scope management Contract engineering Vendors management Procurement services

Safety & Security management Store & inventory management

Transportation management Estimating & Financial forecasting

Project monitoring & control Control of cost & completion time Project co-ordination & liasioning

Inspection, expediting and acceptance of plant & equipment Supervision of Installation of products / services

Scheduling & Progress report Specialist supervision Manpower planning Risk management

Interface management with statutory / regulatory authorities etc

QA & INSPECTION / EXPEDITING OF PLANT & EQUIPMENT

Total Inspection of Product - Raw material, In-process & Final Product. Selective In-process Inspection & Final Product Inspection Final Product Inspection Expediting & Post ordering follow up

COMMISSIONING & PLANT START-UP ASSISTANCE

Commissioning instruction Installation / operating procedures Cold test run and supervision during commissioning Heating up & commissioning Preparation of As-built drawings (Configuration Management) Performance guarantee demonstration Post commissioning services as per client’s requirement

LIST OF TESTING / INSPECTION FACILITIES

INTERNAL :

1.Hydraulic Testing : Maximum pressure test carried out 125Kg/cm2

Pumps available upto10,000 PSI Capacity.

2.Pneumatic Testing : Up to 7 Kg/cm2 and for higher pressure

3.For Heat Treatment : Furnace by Rashtriya Refractory Corpn.

Size : 10 mtrs. x 6 mtrs. x 6 mtrs

4. Radiography : Sub Contracted to reputed radiographer.

5 Other Non-Destructive Testing : DPT is In House UT, MPI are subcontracted

6. Destructive Testing : Done at approved Testing Laboratory.

LIST OF MACHINERYDESCRIPTION OF THE MACHINE CAPACITY OF MACHINES

1. Magnetic Base Drill Machine :Suitable for steam/water drum drillingMake : NITTO KOHKI – 52 Ø capacity Ø 2” x 3” deep.

2. Magnetic Base Drill Machine :Suitable for steam/water drum drillingMake : NITTO KOHKI – 25 Ø

3. Plate Bending Machine (Himalaya :35 mm Thk. Capacity pre-pinching, Make)37 mm Thk. Capacity for rolling,2500 mm width. 75 H.P Motor,

4. Hydraulic Press Liberty Make :500 Tones capacity, 50 Thk. Plate forming capacity, Dished end up to 32 mm Thk 20,H.P. Motor.

5. Welding Rectifier :600 A Cap. to weld up to 6mm Electrode (MEMCO Make) 10 Nos.( 30 H.P. Motor Capacity).

6. Argon Arc Welding :600 A Capacity with high frequency make inverter of welding unit capable Miller and plasma cut up to 25 mm thk stainless steel plates (35 H.P. Motor Capacity).

7. Submerged Arc Welding with : 1200 A Capacity Max. weld up to 65mm rotating boom. ( ESAB make)thk. (50 H.P. Motor Capacity) at very rapid rate compared to manual welding.

8. E.O.T. / O.H. Crane : 15 Ton Lifting Cap. (2 Nos.) 10 Ton Lifting Cap. (2 Nos.)9. Coil making Machine : 10 H.P. for Rolling / Bending of pipes

up to 75 mm O.D. Schedule 80 pipes.10.Pug Cutting Machine : For edge preparation for various sizes of plates (5 Nos.) 11. Corrugating Furnace Machine : Up to 22 mm thick.12. Heat Treatment Furnace : Size 10 mtrs. x 6 mtrs x 6 mtrs.13. Pipe/ Tube Bending Device : Size up to 80 mm NB, pipe / tube. 14. Grinding Machine :Lot of 15 Nos.

600 KGS/ HR BOILERJEDDAH , SAUDI ARABIA

2 TON / HR BOILER MOSCOW , RUSSIA

MINI STEEL PLANT , QATAR , SAUDI ARABIA

THAI ORGANIC AND CHEMICALS COMPANY LTD ,

THAILAND9 TON/ HR BOILER

GODREJ SOAPS LTD, MUMBAI

6 TON/ HR BOILER

MUMBAISTEEL PLANT EQUIPMENTS

GRASIM INDUSTRIES LIMITED CHEMICAL DIVISION , NAGDA

HYDROGEN FIRED 9 TON BOILER

50 TON GAS BASED DRI PLANT , RAIPUR

12 TON BOILER , MUMBAI PRODUCER GAS PLANT , GUJARAT

JAMNAGAR , GUJRAT.STEEL STRUCTURALS

GUJRAT.PRESSURE VESSELS

6 TON BOILER , THAILAND

18 TON BOILER ,MUMBAI PRODUCER GAS PLANT , GURGOAN

17 TON BOILER , MUMBAI

WHRB BOILER , MUMBAI ROTARY KILN , MUMBAI

OVE R S E A S C LI E N T SV I VA M A R K E T I N G – I N D O N E S I AH A RV I N D E R & C O . – N I G E R I AT . K I S H E N & C O – N I G E R I AD H A H R A N C H E M I C A L - D A M M A MI N D U S T R I E S - S A U D I A R A B I AA L F A L E V E L - M O S C O W

STATE OF THE ART1,00,000 TPA STEEL MILL

& 15MWe CAPTIVE POWER PLANT

ON EPC BASIS

PRESENTED TO

PROSPECTIVE ENTERPRENUER. BY

STERLING STRIPS LTD.MUMBAI, INDIA

ABOUT THE PROJECT • The project envisages setting up of a 1,00,000 TPA steel mill &

15MWe Captive Power Plant for manufacturing low cost deformed bars.

• The location of the project shall be Saudi Arabia.

• The project is promoted by Saudi nationals based at Saudi.

• Sterling Strips Ltd. shall be executing the project on engineering procurement & construction (EPC) basis.

• The duration of the project shall be around two years.

GLOBAL SCENERIO OF REBARS• The global requirement of rebars today is by way of low cost

deformed bars with a guaranteed minimum 500N/mm2 yield strengthwith adequate ductility for seismic zones. The objective is clearly costsaving through the reduced quantity of steel used in RCC withoutcompromise on safety.

• Saudi, a prosperous region in the Gulf. Saudi also generates lot ofmelting scrap which were used to export to other countries. With thenew imposition of law the melting scrap can not be exported out ofSaudi, hence the prices of melting scrap has come down to nearabout 400 SAR. There is a lot of scope in Saudi region to recycle thisscrap and produce quality construction bars for self consumptionmakes better business sense.

• With sign of recovery being seen worldwide in theconstruction/infrastructure sector, there will be surge in demand forrebars and Saudi is ideally placed to exploit this potential which in allprobability is likely to sustain for longer period.

What is a steel mill made up of ?

A Steel Mill would broadly incorporate the following equipment:

• Steel Melting Shop• Billet Casting Section• Automatic Rolling Machine• Cooling Technology for the quenching

and tempering of steel.

Process Flow Chart for a Steel Mill

RAW MATERIALSCRAP

RAW MATERIALPIG IRON / DRI

STEEL MELTING SHOP WHERESTEEL IS MELTED IN THE INDUCTION FURNACE

BILLET CASTING SECTION WHERE MOLTEN STEEL IS CONVERTEDTO SQUARE BILLETS

AUTOMATIC ROLLING MILL WHERE BILLETS ARE CONVERTED TO REBARS WITH THERMEX Q& T PROCESS

FINISHED PRODUCTTHERMEX TMT REBARS

1ST STAGE 2ND STAGE 3RD STAGE

Steel Melting Shop• The 1st stage of manufacturing of rebars is

the melting of charge in an induction furnace.

• The charge to be melted consists of the following major raw material :a) Shredded Scrap - 85%b) Pig Iron/DRI - 15% Additives such as Ferro-Silicon, Ferro-Manganese & Aluminum Shots are added to the charge.

Working of an induction melting furnace

The principle of operation of the induction furnace is the of phenomena electromagnetic induction.

The coreless induction furnace is composed of a refractory container, capable of holding the molten bath, which is surrounded by a water cooled helical coil connected to a source of alternating current. Figure shown is a simplified cross section of a coreless induction furnace.

Working of an induction melting furnace

• The induction (generation) of the electrical current in a conductive metal (charge) placed within a coil of conductor carrying electrical current is known as electromagnetic induction of secondary current.

• The alternating current applied to the coil produces a varying magnetic field which is concentrated within the helical coil. This magnetic field passing through the charge induces secondary current in the charge piece. The current circulating in the charge produces electrical (I2R) losses which heat the charge and eventually melt it.

Typical Induction Melting Furnace

Billet Casting Section• The 2nd stage of manufacturing of rebars is the

manufacture of billets in a Continuous Casting Machine.

• Continuous Casting is the process whereby molten steelis solidified into a “semi finished” billet, bloom, or slab forsubsequent rolling in the finishing mills. Continuouscasting has achieved improved yield, quality,productivity and cost efficiency.

• The project envisages manufacture of square billets inthe size range of 110mm/110mm to 160mm/160mm in atwo strand continuous casting machine.

Typical Continuous Casting Process

Manufacturing of Billets• The molten metal from the induction melting furnace is

tapped in to the ladle where it undergoes ladle treatment such as degassing etc.

• From the ladle, the hot metal is transferred to a holding bath called Tundish.

• Metal is drained from the Tundish in to the top of an open base mould.

• In the mould a thin layer of metal next to the mould solidifies in what is now called a strand.

• The strand then passes through the spray chamber where large amount of water is sprayed on the strand to assist the process of solidification.

• After exiting the spray chamber, the strand passes through straightening rolls and withdrawal rolls.

Range of Continuously Cast Sections

Automatic Rolling Mill• The 3rd stage of manufacturing of rebars is the manufacture of

simple cross sections from billets in an Automatic Rolling Machine.

• This is achieved by heating a component to it’s upper critical temperature and then applying the controlled load which forms the material to desired specification or size.

• Mechanical properties of the material in it’s final as rolled form is a function of:

Material ChemistryRe-heat TemperatureRate of temperature decrease during deformationRate of deformationTotal reduction Recovery time Subsequent rate of cooling after deformation

Automatic Rolling MillThe automatic rolling mill incorporated in this

project has the following parameters :

Input Raw-Material : Billets : 110mm X 110mmBillets : 160mm X 160mm

Length of Billet : 6 MeterMill Capacity Per Annum : 1,00,000 Tons/YearMill Capacity Per Hour : 25 Tons Running hours per day : 12 Hours

FINISHED PEODUCTSRound : 8mm - 40mm Ribbed Bars : 8mm - 40mm T.M.T. Bars : 8mm - 32mm

Configuration of Automatic Rolling Mill

Mill ConfigurationRe-heating FurnaceRoughing Mill ComplexFirst Intermediate Mill ComplexSecond Intermediate Mill ComplexFirst Finishing Mill ComplexSecond Finishing Mill ComplexMill AuxiliariesThermex Q & T Treatment PlantCooling Bed. Mill AccessoriesMechanical Work Shop Electricals.

Bar Mill & Related Equipment

Bar Mill & Related Equipment

Making of Steel & Steel Products

Making of Steel & Steel Products

Thermex Q & T Treatment Plant• The Thermex® quenching &

tempering process makes use ofthe heat energy of the rolled barafter the finishing stand of therolling mill.

• Normally, this energy is wasted asthe rolled bars at 950-1000 0C areallowed to cool to ambienttemperature on the cooling bed.

• The Thermex® System is installedbetween the last mill stand and thecooling bed. (See Figure)

• The rolled bar leaving the last standis passed through Thermex coolingpipes wherein the surfacetemperature of 950 –1000 Deg C isbrought down drastically in a shortperiod of 1 second by intense anduniform cooling. The temperatureof the core is largely unaffected.

Thermex Q & T Treatment Process• The drastic and pre-determined

cooling of the bar peripherytransforms the peripheralstructure to marten site requiringannealing to render the baruseful. This annealing isachieved through the heatavailable at the core. Theperipheral and coretemperatures finally equalise ataround 600 0C. The resultant barstructure is of tempered martensite at the periphery and of fine-grained ferrite - pearlite at thecore. The soft core forms about70 – 80 % of the area (dependingupon the desired minimum yieldstrength) and the rest is thehardened periphery. The productexhibits high yield point, surfacehardness, toughness, ductilityand weldability.