stainless steel seamless welding pipe tube1.Material:201,202,301,304,304L,321,TP316I,316L, ... — 10mMaterial201, 202, 301(1Cr17Ni17) , 304(0Cr18Ni9) ,304L(00Cr19Ni10) ,321(1Cr18Ni9Ti), TP316l(0Cr17Ni12Mo2) ,316L(00Cr17Ni14Mo2),310S(0Cr25Ni20) ,317L(00Cr19Ni13Mo3)StandardGB/T14976-2002 ...