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Co***nies operated by the Seamless Steel Tube : # 10, # 20, # 35, # 45, 20G, Produce, DZ50, N80 alloy pipe : 16Mn, 35CrMo, N80, J55, K55, 27SinMn, 12CriMoV, 15CrMo, 10CrMo910, Super, A106B, A335P91, Cr5Mo, A335P11. WB36 15NiCuMoNb5, steel research 12Cr2MoWVTib 102, 301, 302,304,321 1Cr18Ni9Ti, TP316H and Materials of TP347H and other materials. Implementation of the standards : GB8162-1999, GB8163-1999. GB - 1999, GB5310-1995, GB9948-88. GB6479-2000 GB5312-85 and so on. The Co***ny for seamless tube is atta...
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