... wt:SCH40 OD:10-630mm BG ASTM A33 pipe SpecificationsChina StandardSteel GradeStandardseamless steel tubesand pipesfor ... , 20MoG, 12Cr1MoVG, 15CrMoVG, 12Cr2MoG, 12Cr2MoWVTiB, 12Cr3MoVSiTiB,ASTM A106-96aATSM A213-95aJIS G3461-1988JIS G3462-1998DIN 17175- ... GB3087-199910, 20ASTM A179, ASTM A192ASTM SA179,SA192,BS3059Seamless Steel Tubes for high pressure --Chemical fertilizer equipmentGB6479 ...