... etc.or as customers' drawings for special use. 3. Pressure Ratings: ANSI Class 150, 300, 600, 900, 1500 and ... . ApplicationPetroleum, chemical, power, gas, metallurgy, shipbuilding,construction, etcTypeSlip-On, Welding Neck, Blind, Socket Welding, Threaded and Joint etc. ... third-grade metering, the People's Republic of China on the Administration of Production License for industrial products, ETC. ...