wellhead equipment working pressure: 2000~15000psi nominal size: 2 ... flange,clamp wellhead equipment 1.Fix drilling wellhead, connect wellhead casing string, seal and control the annular of casing, suspend tubing, control wellhead pressure and ... , water injection and test service 2.Consist of casing head, tubing head and Christmas tree 3.Apply ... Material class: AA,BB,CC,DD,EE,FF wellhead equipment