Our factory working for high pressure more valves than 20 years in domestic market or oversea market and have much experiences in valve design and manufacture, techincal precess control, NDT test as well as quality control. The high pressure gate valve our factory designed has two type of sealing way, flexible wedge disc and parallel slab disc which widely used in HP/HT service pipeline which operated by electric actuator or handwheel. The sealing principle of pressrue seal gate valve is sealing surface tight off under pressure and they are widely applicated in petrochmical, thermal power plant. Valve material can cover carbon steel, alloy steel, special steel, such as WCB,WC6,WC9,C5,C12, C12A,CrMoV etc.