... 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, ... gate valves, flanges, adapter spools, spacer spools, and H2 type chokes, etc Inspection Test Pass Before ... in Yancheng, Jiangsu→Over 200 employees oil drilling equipment -christmas tree