... ,X65,X70For the purpose of transportation of gas, water, oil in oil &gas industryPSL 2B/X42,X46,X52,X60,X65, ... water ,petroleum ,gas and other common fluids,ASTM A179For tubing heat exchanger and similar heat conveying equipmentsASTM A192For manufacture wall panel, re heater ... and steam pipe line of boilersDIN 1629ST52 STS49Used for the purpose of transportation of gas, water, or other ...