... -121 4)material class:AA-HH SpecificationsX-mass tree: 1)API 6A 2)Work pressure:2000-20000psi 3)work temp:-46 ... other types of wells.1.X-mass tree is according API 6A2.Working pressure:2000-20000psi3.working temp:-46-1214.material ... the different requirements.9.The Christmas tree could be used for oil exploration, gas exploration, water adding, compression fracture, acidification, etc ...