... fluid,petroleum casing pipe and oil pipe,steel rolling etc. table1 production cross cection of the round billet output(10, ... tube 20,45,27SiMn6Billet of the high pressure chemical fertilizer equipment pipe 20,16Mn,12CrMO,12Cr2mo7Billet of the oil casing and tubing ... 37Mn,34Mn2V,35CrMo8Billet of the gas bottle seamless pipe J55 ...