... kinds of steel pipes like following:1. seamless steel pipe (A53, A106, API 5L, A179, A192, ... 2. stainless steel pipe (304, 316, 316L, 304L, 321, 410, 444, 430)3. alloy steel pipe (ASTM A519 GR ... . 4130, 4140)4. anti-corrosion steel pipe (cement lined and ... 3PE, IPN8710, 2PE, Epoxy powder)5. welded steel pipe (A53, API 5L, BS1387, EN10025) 1Productstainless steel ...