Hot Rolled Steel Pipes, Hot Rolled Seamless Tube, carbon Steel Hot Rolled Pipes, cs Hot Rolled Pipes, alloy steel Hot Rolled tubes
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Hot Rolled Seamless Tube

Hot Rolled Steel Pipes, Hot Rolled Seamless Tube, carbon Steel Hot Rolled Pipes, cs Hot Rolled Pipes, alloy steel Hot Rolled tubes

Hot Rolled Steel Pipes, Hot Rolled Seamless Tube, carbon Steel Hot Rolled Pipes, cs Hot Rolled Pipes, alloy steel Hot Rolled tubes

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Specification :

Size Range : 6NB to 1200NB IN
Type : Round, Square, Rectangle, Coil, "U" Shape, Hydraulic & Honed Tubes
Schedule : SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.
Length : Single Random, Double Random & Cut Length
End : Plain End, Beveled End

Application & Specification (Seamless) :

Oil & Gas Sector
API 5L
API 5CT
IS 1978, 1979
Automotive Industry
ASTM A-519
SAE 1010, 1012, 1020, 1040, 1518, 4130
DIN 2391, 1629
BS 980, 6323 (Pt-V)
IS 3601, 3074
Hydrocarbon Process Industry
ASTM A-53, A-106, A-333, A-334, A-335, A-519
BS 3602,3603
IS 6286
Bearing Industry
SAE 52100
Hydraulic Cylinder
SAE 1026, 1518
IS 6631
DIN 1629
Boiler, Heat Exchanger, Superheater & Condenser
ASTM A-179, A-192, A-209, A-210, A-213, A-333, A-334,A-556
BS 3059 (Pt-I   Pt-II)
IS 1914, 2416, 11714
DIN 17175
Railways  
IS 1239 (Pt-I),1161
BS 980
Mechanical, Structural General Engineering
ASTM A-252, A-268, A-269, A-500, A-501, A-519, A-589
DIN 1629, 2391
BS 806, 1775, 3601, 6323
IS 1161, 3601

Applications of Hot rolled steel pipes seamless tube:

Petrochemical Industries Paper Industries Sugar Factory
Cement Factory Power Plant Petrochemical Industries
Chemical Industries Shipbuilding Plant Construction Industries
Steel Plant Oil Mills Industries Fertilizers Industries
Oil & Gas Industries Refineries Industries Defence Industries


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DIFFERENCE BETWEEN HOT ROLLED STEEL AND COLD ROLLED STEEL

Hot Rolled

Hot rolling is a mill process which involves rolling the steel at a high temperature (typically at a temperature over 1700° F), which is above the steel’s recrystallization temperature. When steel is above the recrystallization temperature, it can be shaped and formed easily, and the steel can be made in much larger sizes. Hot rolled steel is typically cheaper than cold rolled steel due to the fact that it is often manufactured without any delays in the process, and therefore the reheating of the steel is not required (as it is with cold rolled). When the steel cools off it will shrink slightly thus giving less control on the size and shape of the finished product when compared to cold rolled.

Uses: Hot rolled products like hot rolled steel bars are used in the welding and construction trades to make railroad tracks and I-beams, for example. Hot rolled steel is used in situations where precise shapes and tolerances are not required.

Cold Rolled
Cold rolled steel is essentially hot rolled steel that has had further processing. The steel is processed further in cold reduction mills, where the material is cooled (at room temperature) followed by annealing and/or tempers rolling. This process will produce steel with closer dimensional tolerances and a wider range of surface finishes. The term Cold Rolled is mistakenly used on all products, when actually the product name refers to the rolling of flat rolled sheet and coil products.

When referring to bar products, the term used is “cold finishing”, which usually consists of cold drawing and/or turning, grinding and polishing. This process results in higher yield points and has four main advantages:

  • Cold drawing increases the yield and tensile strengths, often eliminating further costly thermal treatments.
  • Turning gets rid of surface imperfections.
  • Grinding narrows the original size tolerance range.
  • Polishing improves surface finish.

All cold products provide a superior surface finish, and are superior in tolerance, concentricity, and straightness when compared to hot rolled.

Cold finished bars are typically harder to work with than hot rolled due to the increased carbon content. However, this cannot be said about cold rolled sheet and hot rolled sheet. With these two products, the cold rolled product has low carbon content and it is typically annealed, making it softer than hot rolled sheet.

Uses: Any project where tolerances, surface condition, concentricity, and straightness are the major factors.

 


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Hot Rolled Steel Pipes, Hot Rolled Seamless Tube, carbon Steel Hot Rolled Pipes, cs Hot Rolled Pipes, alloy steel Hot Rolled tubes

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Hot Rolled Steel Pipes, Hot Rolled Seamless Tube, carbon Steel Hot Rolled Pipes, cs Hot Rolled Pipes, alloy steel Hot Rolled tubes

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