Casing Head Assembly, are installed in the lower end of wellhead equipment, connected casing string and various wellhead equipment parts,which consist of body, casing hanger and seals.
Tubing Head Assembly, Tubing Head Assembly are installed on the upper end of the casing head, which consist of tubing head spool, tubing hanger and seals.
Christmas Tree Assembly, Christmas tree are installed on the upper end of the tubing head, which consist of gate valve, choke valve, tee/cross, flange and christmas tree cap, used to control and regulate the well production, lead the oil or gas from the well into the pipeline, carry out the installation and remove of wellhead tools.