... 1Cr5MoStardandGB9948-2006,JIS G3441-19887. ApplicantSeamless steel pipe for Gas CylindersGrade:34Mn2V,30CrMo,35CrMo,45.8.Application1),API SPCE ... 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 ... ,water&petroleum.4), ASTM A53 It is used for conveying water,petrolem,gas and other common fluids.5), ASTM A179 ...