... steel pipe fittings 2.Surface:Polishing Inner & Outside 3.Standards: ASTM, AISI, IDF, 3A, SMS, BS, DIN,etc. stainless steel pipe fittings ... fittings 2) Specifications: OD: From20-1200mm. THK: From0.5-40mm.3) Grades: SS304, SS304L, 304LN, SS316, SS316L, 316LN, 316Ti, 316H, ... request. 4) Surface:Polishing Inner & Outside5) Standards: ASTM, AISI, IDF, 3A, SMS, BS, DIN. JIS, CNS, KS, IS, UNS, CSA, DGN ...