... 4.Surface:2B, 2D, 2E, ED, NO.4,etc. stainless steel pipe 1.Desctiption : Grade201(1Cr17Mn6Ni5n), 202(1Cr18Mn8Ni5N), 301(1Cr17Ni7), ... 317(0Cr19Ni13Mo2), 317L(00Cr19Ni13Mo3),321(1Cr18Ni9Ti), 347(0Cr18Ni11Nb), 405(0Cr13AL), 420J2,INCO800,840, Ni36, Ni42 etc. StandardJIS, ASTM, AISI,DIN, ... the deposit.Our CertificateOur products ApplicationOur company 201 stainless steel pipe --201 stainless steel pipe