1.Item:A335 P11 alloy seamless steel pipes and tubes for high pressure service
2.Standrad: GB6479-86, ISO 9329-2-19972.
3.This specification covers seamless and welded steel line pipe. It includes standard-weight and extra-strong threaded line pipe. It includes standard-weight and extra-strong threaded line pipe; and standard-weight plain-end, regular-weight plain-end, special plain-end, extra-strong plain-end, special plain-end, extra-strong plain-end pipe, as well as bell and spigot and through-the-flow line(TFL) pipe.