... SPCE 5L For the purpose of transportation of gas,water,oill in oil&gas industry.2, API SPEC 5CT Tubing is ... & natural gas. casing pipe serves as wall of well.3, ASTM A106 For the purpose of the pipeline project of ... boiler,water&petroleum.4, ASTM A53 It is used for conveying water,petrolem,gas and ... wall panel,economizer,reheater,superheater and steam pipeline of boilers.