... : Main (in): 2-9/16, 3-1/8, 3-1/16Side (in): 2-9/16Technical Specifications of Christmas TreeWorking Pressure: 2000- ... FlangedPR: PR1-2PSL: PSL1-3Normal Size (in): 2-9/16Technical Specifications of Casing HeadConnection type: Bottom Welded Type ... threads connectionCasing Size (in): 5-1/2, 7, 9-5/8, 12-1/4,13-3/8, 20, ... for more specific requirements. Wellhead, Christmas Tree, Casing Head, Tubing Head