... 5L For the purpose of transportation of gas, water, oil industry.API SPCE 5CT Tubing is used in extracting ... pipeline project of boiler, water & petroleum.ASTM A53 it is used for conveying water, petroleum, gas and other ... boilers.Main product: seamless steel pipe,pipe fittings, oil casing steel pipe,weld steel pipe,Rubber Lined ... For the purpose of transportation of gas, water, oil industry. API Steel ...