1) Outside diameter: 20 - 1,067mm 2) Thickness: 1 - 80mm 3) Manufacturing standards: GB, -product name-main material-standard-usessize range(mm)stainless steel pipe 0Cr18Ni9 (304),00Cr19Ni10 (304L),00Cr17Ni14MO2(316L),00Cr17Ni12MO2(316),0Cr19Ni13MO3(317) ,00Cr19Ni13MO3(317L) ,1Cr17Mn6Ni5N(201) ,1Cr18Mn8Ni5N(202) ,1Cr17Mn6Ni5N(201) ,1Cr17Ni7(301),1Cr18Ni9(302),Y1Cr18Ni9(303),0418Ni10Ti(321), ...