... downhole operation 3.Simple in construction, light in weight a wellhead assembly christmas tree consists of casing head, tubing head and Xmas tree, which ... -2PSL: PSL1-3Normal Size: Main (in): 2-9/16, 3-1/8, 3-1/16Side (in): 2-9/16Technical Specifications of Christmas ... -1/2, 7, 9-5/8, 12-1/4,13-3/8, 20, 30PR: PR1-2PSL: PSL1-4Material Class: AA-HHTechnical ...