1.API 6A 2.KQ65-60 KQ65-35 3.PSL1, PSL2,PSL3, ... ,CC,DD,EE,FF 5.PR1,PR2 KY65~60 wellhead equipment ,is mainly used in oil extraction ,it consists of bottom ... Tubing2 7/8″ EUEConnecting Casing5 1/2″Connection TypeClamp Connector api 6e .KQ65-60 cherismas tree Equipment