... deal with all kinds of steel pipes like following:1. seamless steel pipe (A53, A106, API 5L, A179, A192, A213, ... steel pipe (ASTM A519 GR. 4130, 4140)4. anti-corrosion steel pipe (cement lined and coated, 3PE, IPN8710, 2PE, Epoxy powder)5. welded steel pipe (A53, API 5L ... , BS1387, EN10025) 1Productstainless steel pipe2StandardU.S.A.ASTM A312/A213/ ...