... body 3
[email protected] Commodity1 ductile
iron casting upper
and lower valve body2 supply flexible valve bodyMaterial: ... casting:1.Process: resin sand
and green sand2.Material: gray
iron casting,ductile
iron casting,
iron casting,carbon steel casting,white ... forging:1.Process:die forging
and free forging2.Material:gray
iron forging,ductile
iron forging,
iron forging,carbon steel forging,white ...