1.pipe line 2.Mainly export to Southeast Asia,Africa,Mid East,Eastern Asia, ... -2006,JIS G3441-19887. ApplicantSeamless steel 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 ...