Working pressure:2000~15000psi Temperature level:L,P,R,S,T,U,V Suitable medium:Petroleum,Natural gas,Mud Material level:AA~FF 1.Tubing hangere for tubing head has straight type seat bore and 45°cone of hanging shoulder, with strong loading ability.2.The connecting type of side outlet is a bolted flange with VR thread for valve-replacement operation.3.In the bottom flange sets secondary seal ...