The tubing hanger is sealed by means of squeezing the top threads to trigger rubber, can be provided with underground safety valve, control pipeline and crossing hole, and various API screw threads or special gas seal screw threads are arranged up and down.

Tubing hanger has various structure forms:
·Taper type and straight type
·Metal-to-metal seal and non-metal seal
·Back pressure valve thread
·Various cable penetrator channel, control pipeline channel of subsurface safety valve.
Chemical reagent injection channel and capillary channel.
·The upper and lower threads may be API tubing threads and VAM threads.