... useTechnologyforged,casting certificateISO9001:2000,QS-9000 and Pressure Vessels accessories and access to quality inspection InspectionsFactory ... , chemical, power, gas, metallurgy, shipbuilding,construction, etcTypeSlip-On, Welding Neck, Blind, Socket Welding, Threaded and Joint ... grade metering, the People's Republic of China on the Administration of Production License for industrial products ...