... 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 ... wall panel,economizer,reheater,superheater and steam pipeline of boilers. api 5l pipe line