... Standard:ASTM,ASME,DIN,JIS Certificate:API,ISO,CCS SCH 40 steel tube ProductionSteel pipeTypeSeamless and ERWSize1/2" To 24"Wall ... XXSStandardsANSI, ASTM,API,DIN, JIS, BS, ISO, GB, SH, AND HG etc MaterialStainless Steel: TP304, TP304L, TP316,TP316L,TP310S,TP321,TP202 ... paymentCertificateAPI, CCS,and ISO9001:2000Productivity200000 ton per yearKeywords: SCH 40 steel tube,carbon steel tube,seamless tube