... seamless steel pipe 1)Standard:GB, DIN, JIS, ASTM2)Grade:10#,20#,ST35,ST37,ST52,16Mn,A53-A369,API J55-API ... P110,Cr-Mo alloy3)OD:20 - 1,067mm Thickness:1 - 80mm4)Length ... origion:Shandong,China9)Main market: Middle East,Asia,Europe,USA ....10)Usuage: a. Low and middle pressure fluid transportation pipe lines ...