Carbon Steel Pipe with High Quality 1.WT:4-70mm OD:25-370mm 2.Certification:API 3.Professional manufacturer ASTM A106 GR.B Carbon Steel Pipe 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), ...