... -5/8 in to 20 API 6A oil drilling equipment- christmas tree consists of the casing head,tubing head and christmas tree.The ... main technical specifications:1, W.P.:2000Psi~20000Psi 2, Medium:Oil,Gas,Mud3, T.C.:-46°C ... ~121°C(L.U)4, M.C.:AA,BB,CC,DD,EE,FF5, PSL ...