... :1-160mm 4)Type:SSAW,LSAW,Seamless 5)Standard:ASTM,ANSI Type sch 20 carbon steel pipe SizeSeamless Pipe: 1/2”~48”, DN15~DN1200, OD21 ... .6mm ,WT: 6-36mmWall thicknessSGP, STD, SCH40, SCH80, SCH160. XS,XXS and so on.StandardsANSI B16.9 / 16.28, ASTM A53 ... ,A210-C,A333-1.6,A334-1.6,A333-7.9,A334-7.9,150M19,En46..Length6-12mIndustrial processhot rolled,hot expanded ...