1.1 8 stainless steel pipe 2.O.D.:6mm~ ... A333, DIN1629, DIN17175, Russian standard, Franch stan.)2. stainless steel pipe (304, 316, 316L, 304L, 321, 410, 444, ... Epoxy powder)5. welded steel pipe (A53, API 5L, BS1387, EN10025) 1Product1 8 stainless steel pipe2StandardU.S.A.ASTM A312 ... -Process-Application-Other Leading steel pipe---carbon steel pipe↓---Anti-corrosion steel pipe↓ ---welded steel pipe↓