Except the original function, valve rotator can also force valve rotating around its axis while opening and closing, which can let valve, valve seat,

Valve clamp,made of low carbon steel,are formed by automatic extrusion.This technology can form excellent shaped precision ,so that any two of valve

Powder metallurgy valve seat made from variety of metal powder mixing, pressing, sintering, dont consider any castability of liquid metal like unifor

Through extrusion from low carbon alloy steel,after carburized treatment on its surface ,it can improve the toughness of core and hardness of surface

Except the original function, valve rotator can also force valve rotating around its axis while opening and closing, which can let valve, valve seat,

Except the original function, valve rotator can also force valve rotating around its axis while opening and closing, which can let valve, valve seat,

Except the original function, valve rotator can also force valve rotating around its axis while opening and closing, which can let valve, valve seat,

Except the original function, valve rotator can also force valve rotating around its axis while opening and closing, which can let valve, valve seat,