... ASTM A161-946. ApplicantSeamless steel pipe for Petroleum CrackingGrade:10,20,12CrMo,15CrMo, ... pipe for Gas CylindersGrade:34Mn2V,30CrMo,35CrMo,45.8.Application1),API SPCE 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 as wall of well.3), ASTM A106 For ...