1.API 6A 2.KQ65-60 KQ65-35 3.PSL1, PSL2,PSL3,PSL4 4.AA,BB,CC,DD,EE, ... in oil extraction ,it consists of bottom flange,tapper tubing head ,upper flange ,gate valve (6 pcs ),needle valve(2 pcs ... Sealing Test3000PsiWater Pressure Test for Strength6000PsiVertical Diameter of Tubing Head6.3"Working Mediumoil, waterConnecting Tubing2 7/8″ EUEConnecting Casing5 1/2 ...