... .stainless steel seamless pipe 2.Grade:200,300series 3.Surface:black,pickling,bright 4.Dia:3-600mm 5.Standard:AISI,ASTM, 1.Description:stainless steel seamless ... pipe2.Grade:201,202,301,304,304L,310,316,316L,321, ... 430 etc 201 (1Cr17Mn6Ni5N) 202 (1Cr18Mn8Ni5) 301 (1Cr17Ni7) 304 (0Cr18Ni9) 304L (00Cr19Ni10 ...