GAIRUI VALVE is specialized in manufacturing Socket Welding Forged Gate Valve with following good characteristics: good sealing performance, reliable safety guarantee, long life span and etc. Socket Welding Forged Gate Valve is usually used for DN40 for its economic features, and butt welding ends is for DN40. Socket welding is widely used for small size pipe because they would always have a thin wall thickness which may have problems for butt welding. Moreover, the birdsmouth part of socket welding has the function of reinforcement so that it is also welcomed under high pressure.