●  Fix drilling wellhead, connect wellhead casing string, seal and control the annular of casing, suspend tubing, control wellhead pressure and adjust flow rate, also induce oil into outlet pipeline, shut off oil well when necessary, and apply to acid fracturing, water injection and test service

●  Consist of casing head, tubing head and Christmas tree

●  Apply to all kinds of casing, tubing programs and connection forms

●  Can be equipped with (pneumatic) hydraulic safety valve

●  Working pressure: 2000Psi-20000Psi

●  Working medium: oil, natural gas, mud

●  Working temperature:-46℃ C-121 ℃ (Class LU)

●  Material class: AA,BB,CC,DD,EE,FF,HH