2.Reliable in quality : the design, manufacture and inspection of the product are based on the advanced computer system and numerically controlled machines.
3.Complete in specifications : the product applies for well holes of 3.5-17.5 inches.These are 10 main specifications(Φ73, Φ89, Φ120, Φ165, Φ172, Φ197, Φ203, Φ215, Φ244 classified by OD.). There are straight, single bent, double bent and angle-adjustable(at ground) structures for each specification. There are 2 kinds of heat resistant temperatures : 120℃ and 150℃.
4.Outstanding in behaviors : middle speed and high torque, high efficiency, wide flow rate range, stable operation, easy repair, high reliability and long life.
5.Wide in use : The product can be widely used in drilling and workover operations of straight wells, directional wells, sidetracked wells and horizontal wells,ect.