... .standard material Austenitic 304aa0Cr18Ni9 3.widely used in food equipen Industry stainless steel pipe1) Grade: AISI 304, AISI 201, AISI ... : 400 grit, 600 grit, 240 grit, HL, 2B, BA industry stainless steel pipeCommodity StandardASTM A554, A249, A269 and A270, A312 ... certification :3. We are granted Star Business Company By Tianjin City .Our sales family: Contact me : industry stainless steel pipe