... We supply all kinds of wellheads, X-mas tree, Casing head, tubing head and manifold assembly. The wellhead system we ... all kinds of installation of oil or gas wells inland and offshore.2. All hydraulic or neumetic valves are available ... . Working medium: Oil, Gas, Mud, Sour Gas like H2S and CO25. Working temperature: -46~121(LU Grade)6. Grade of ... , FF, HH7. Grade of FF Spec: PSL1, PSL2, PSL3 and PSL4.