American standard: ASTM A234 WPB, ANSI B16.9, ANSI B16.28, ANSI B16.11
Japanese standard: JIS B2311, JIS B2312
Germany standard: 2605-2642
IN2605-2642, GB/T12459, SH3408, SH3409,HG/T21635, HG/T21631, SY/T05010, GB2459(Seamless), GB. T13401(Welded)
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Carbon steel: A234WPB, A106, A105, Q235, ST37.2, GB10#, GB20#
Stainless steel: SUS321, 304.304L, 306, 306L, 317L
Alloy steel: 16Mn, 16MnR, 12CrMoV, 10CrMo910, Cr5Mo, 15CrMo, WB36, P51
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5.Application: Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc
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