1.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 ... (1Cr25Ni20) 316 (0Cr17Ni12Mo2) 316L (00Cr17Ni12Mo2) 321H (1Cr18Ni11Ti) 321 (0Cr18Ni11Ti)3.Material:304,304L,321,316,316L,2520,1Cr13,2Cr13,3Cr13 ...