Forged steel ball valve is to rely on the working principle of rotary valve rod to make the valve open or closed. Can full size ball valve, Angle of 90 ℃, ball valve switch is lightweight, small size, can make large caliber, reliable sealing, simple structure, convenient maintenance, sealing surface and the spherical often in the closed state, not easily be medium erosion, has been widely used in various industries. Ball valve door manufacturing co., LTD. In Shanghai forging steel ball valve categories: low pressure forging steel ball valve, high pressure forged steel ball valve.