... gas ,casing pipe service as wall of wellAPI 5LPSL 1A25/A/B,X42,X46,X52,X56,X60,X65,X70For the purpose ... industryPSL 2B/X42,X46,X52,X60,X65,X70,X80ASTM A106GR A/B/CFor the purpose of the pipeline project of boiler ... ,water petroleumASTM A53GR A/BIt is used for conveying water ,petroleum ,gas and other ...