... 9329-2-1997,ASTM A161-946. ApplicantSeamless steel pipe for Petroleum CrackingGrade:10,20,12CrMo,15CrMo,1Cr2Mo, ... 19887. ApplicantSeamless steel pipe for Gas CylindersGrade:34Mn2V,30CrMo,35CrMo,45.8.Application1),API SPCE 5L For the purpose ... pipe serves as wall of well.3), ASTM A106 For the purpose of the pipeline project of boiler, ... reheater,superheater and steam pipeline of boilers. api 5l pipe line