Wellhead valve is a key equipment to control the pressure in wellhead and adjust the flow rate of oil/gas production operation.It is used on both surface and subsea well to control and regulate oil production management and other operations.

x-tree is a key equipment to control the pressure in wellhead and adjust the flow rate of Pressure in oil/gas production operation.

·It can be designed into general or integral structure as required;

. It can be completed with pneumatic/hydraulic safety valve;

·It can be classified into two kinds of single-wing and dual-wing. ·As required, matched choke may be positive choke or adjustable choke alternatively