oil drilling equipment-christmas treee 1.Working Pressure: 3000-15000PSI 2 Nominal Bore: 9-5/8 in to 20 API 6A ... .The main technical specifications:1, W.P.:2000Psi~20000Psi 2, Medium:Oil,Gas,Mud3, T.C.:-46°C~121°C(L.U ... which engaged in API 6A&16A products for 2 years→Head office in Shanghai ,2 plants in Yancheng, Jiangsu→Over 200 employees ...