Specifications : 1)API 6A 2)Work pressure:2000-20000psi 3)work temp:-46-121 4)material class:AA-HH SpecificationsX-mass tree: 1)API 6A 2)Work pressure:2000-20000psi 3)work temp:-46-121 4)material class:AA-HHIn petroleum and natural gas extraction, a Christmas tree is an assembly of valves, spools, and fittings used for an oil well, gas well, water injection well, water disposal well, gas ...