... ,STC,BTC,VAM,EUE,NUE API SPEC 5CT oil pipeAPI SPEC 5CT Certificate No.:5CT-0365 H40\ ... 5L For the purpose of transportation of gas,water,oill in oil&gas industry.2, API SPEC 5CT Tubing is ... used in extracting petroleum & natural gas. casing pipe serves ... ASTM A53 It is used for conveying water,petrolem,gas and other common fluids.5, ASTM A179 For tubed ...