JST Christmas tree has the advantages of high bearing capacity, safety, reliability, ... consists of three parts; casing head,tubing head and Christmas tree, which is mainly used to control the pressure of ... (psi):2000∼20000.Nominal Size(in):2 1/16∼4 1/16.Material Class :AA∼FF.Working Temperature:K ... .V.Product Specification Level:PSL 1∼4.Performance Requirement Level:PR 1∼2 Christmas Tree