MANUFACTURING PROCES |
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The
plant manufactures seamless tubes and pipes of all grades of stainless steel.
The plant is committed to quality assurance of the highest standard, in process,
product and services. Stringent system based quality controls are exercised at
each and every stage of production. |
HOT
FINISHED STAINLESS STEEL TUBES AND PIPES
Peeled
rounds of required diameters are heated in an induction furnace and are then
processed through the 2500 metric tons extrusion press. The plant has the
necessary extrusion press. The hollows are then finished as required and tested as per the
customer's requirement. |
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Outside diameter
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50.8
mm to 121.0 mm |
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Wall thickness : |
4.5 mm to 16 mm |
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COLD FINISHED STAINLESS STEEL TUBES AND PIPES
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Diameter
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8.0 mm
mm to 114.3 mm |
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Wall thickness : |
0.75 mm to 10 mm |
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MANUFACTURING
INFRASTRUCTURE |
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For manufacturing the above range, the plant uses modern tube making equipment in combination with processes of Hot Extrusion, Cold Pilgering and Cold Drawing. |
HOT
EXTRUSION PROCES
Heated
rounds are processed through the extrusion press to produce high quality, high
strength hot finished pipes in stainless steel. The plant has an extrusion
press and produces hot finished pipes, hollow bars and also mother pipes for
its cold finishing. The production range covers pipes from 50.8 mm to 121 mm with
wall thickness of 4.5 mm to 16 mm. |
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COLD
PILGERING PROCESS
Cold pilgering process is the established process to manufacture stainless and high alloy tubes. This is due to the high reduction of area which enables it to produce tubes of high metal lurgical structure with favourable material characteristics. The plant has a large pilgering capacity of 12 pilgers and the manufacturing range is from 4.5 mm to 120 mm with wall thickness from 4.5 mm to 16 mm. |
COLD
DRAWING PROCESS
Cold
drawing is used to produce tubes of precise tolerance. The initial hollow is
stretched and processed to obtain better tolerance and surface finish. |
MAIN PRODUCTION FACILITIES |
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Induction furnace Extrusion press Heat treatment furnace including bright annealing
Surface treatment facility
Draw benches
Hydraulic, Ultrasonic and Eddy Current Testing facility
Finishing lines
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QUALITY SYSTEMS |
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Tubinox is committed to quality assurance and quality control of highest standards, in both its product and services. Stringent systems based on quality control is exercised at each and every stage of process and production. The service standards focuses on customer’s requirement and aims for high satisfaction. Full metallurgical analysis – physical properties, chemical analysis, corrosion testing and microstructure analysis are carried out in the fully equipped lab. Non destructive testing is carried out on the tubes and pipes through sophisticated testing systems.
Some
of the quality tests carried out are: |
Mechanical testing
Tensile, Hardness, Flaring, Flattening etc in full compliance with the relevant standards
Corrosion testing
Susceptibility to intergranullar corrosion as per ASTM A 262 – A, B, C, D and E
Laboratory testing
Grain size, ferrite determination and micro structural examination
Hydrostatic testing
Eddy current testing
Ultrasonic testing
Third party inspections like agencies TUV, Lloyds etc is also possible