... seamless pipe , alloy steel seamless pipeStainless SteelStandardASTM A213, A312, ASTM A269, ASTM A778, ASTM A789 , etcMaterial304, 304L, 309S, 310S, 316, 316L, 316Ti, 317L ... , 321, 347H, 201, 202, etc.Alloy Steel StandardASTM A335, ASTM A213, ASTM A106, JIS G3458, JISA3462, DIN17175,, BS1387Material12CrMo, 15CrMo, 12Cr2Mo, 1Cr5Mo ...