·Nominal diameter:2-1/16"-4-1/16"
·Operating temperature:-46℃-121℃(LU Grade)
·Material grade:AA.BB.CC.DD.EE.FF.HH
·Standard level:PSL1-4
·Performance Level:PR1-2
·Working medium:Petroleum, natural gas, slurry, including H2S, CO2 gas

·Composed of four parts:casing head, tubing spool,tubing head, and oil (gas) tree;
·Fix drilled wellhead, connect wellhead casing string. Seal and control the annular space between the tubing, suspension, control and regulation of wellhead pressure oil ( gas ) well flow, and can induce oil into outlet pipeline, if necessary, can also be used to shut off well, can also be used for acid fracturing, water injection, testing and other special operations;
·When the pressure is below the pressure of flowing needs, realize oil extraction by Electric submersible pump;
·Oil circulating pipe connected with tubing head outlet, bidirectional oil;
·Oil circulating pipe on a remote security protection measures;
·Applicable to all kinds of casing, tubing and various connection modes;
·The Christmas tree is safe and reliable, simple and convenient operation and repair;
·May be configured in a variety of specifications ( gas ) hydraulic safety valve.