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ERW pipes

ERW pipes

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ERW  pipes 

ERW Steel Pipe stands for Electric Resistance welded pipe. Electric Resistance Welding process is usually for large diameter which is also the cheapest available process.  Generally when tube is made, it starts off as a flat sheet and this is rolled up into a tube and welded. This extra process strengthens the steel since it is cold formed by up to 20%. The ERW pipes are typically used in applications over 3500 lbs.  The ERW steel pipe is also known as straight joint pipe. According to the wall density, the bonded tube is categorized into typical types and thick-walled types. We can offer items with personalized wall thickness according to customers’ particular requirement with a thickness deviation of no more than 0.25 mm.  With sizes between 1/2 inch and 32 inch, our ERW steel pipes go through rigorous examinations and tests, so about make sure the welding quality, external size precision, ovality, cut lengths, pipe end quality, wall density tolerance, and packaging quality are all conforming to API5L, ASTMA53, GB/T9711.1, or GB/T3091 standards. Also, we can make the item according to the standard needed by customers.

Standard

API 5L PSL1 / PSL2  ASTM A252  ASTM A106  ASTM A53  AWWA C200, C203, C210, C213  EN10255  EN10210  EN10217  EN10219  DIN1626  BS1139  DIN2440/2444  etc.

Steel grade

ASTM A36, A53 Gr B, A106 Gr B, Gr 50  

ASTM A252 Grade 1, Grade 2, Grade 3  

API 5L Gr. A, B, X42, X46, X52, X56, X60, X65, X70  ST33-2, St33, St37, St42, St34-2, St37-2, St42-2, St52-3  S235JR, S235J0H, S235J2H  S275JR, S275J0H, S275J2H, S275NH, S275NLH, S275MH  S355JR, S355J0H, S355J2H, S355K2H,S355NH, S355NLH,S460NH, S460NLH  SS400, SS490 , SM400( A,B,C) SM520(B, C)

End finish

Plain end  

30 ~35°beveled end  

Thread  Coupling

Pipe coating

external: Bare, Black vanish, Clear oil, epoxy coal tar painting, epoxy painting 3PE,FBE,3PP etc.    

internal: FBE(epoxy powder), epoxy painting, cement mortar lining etc.




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