... :1-160mm 4)Type:SSAW,LSAW,Seamless 5)Standard:ASTM,ANSI Type sch 20 carbon steel pipe SizeSeamless Pipe: 1/2”~48”, DN15~DN1200, ... so on.StandardsANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M---1996, DIN2605 / 2615 / 2616, JIS P2311/ ... A334-7.9,150M19,En46..Length6-12mIndustrial processhot rolled,hot expanded,cold drawn,and hot galvanizedSurface treatmentTransparent oil, rust-proof black oil ...