1.API 6A 2.KQ65-60 KQ65-35 3.PSL1, PSL2,PSL3,PSL4 4.AA,BB,CC,DD,EE,FF 5.PR1,PR2 KY65~60 wellhead equipment ,is mainly used in oil extraction ,it consists of bottom flange,tapper tubing head ,upper flange ,gate valve (6 pcs ),needle valve(2 pcs ),small cross,choke (1 pcs ), hanger(1 pcs ),stop valve(1 pcs ),and pressure gauge (1 pcs ),etcmain parameter: Nominal Bore2 9/16"Max. working ...