Drill pipe joints, KQG150Y submersible drilling rig drill pipe joints

Now high pressure DTH drill, end design forms currently used, there are four: the end face convex, planar end face, face concave and the end of central furrow. Multi-use tooth carbide ball, playing ball tooth or teeth and tooth cloth Tine common way. 1, face convex type: This drill two forms, a single and a double boss boss end face, which is mainly used for large diameter drill DTH. Convex end face DTH drill bit can remain in a hard rock and a hard abrasive rock higher rates, but the flatness of drilling is poor, not suitable for blast hole drilling demanding flatness project. 2, end flat type: This relatively robust shape drill for drilling hard and very hard rock, but also for drilling blast holes in the flatness of less demanding hard rock and soft rock. 3, end flat type: This drill head shape with a conical end surface of the concave portion is formed in the drilling process, the drill slightly to keep the drill nucleation of performance, blast hole drilling has a good straight line degree, this drill row powder effect, drilling speed, is currently on the market more DTH drill. 4, end furrow center type: This is the evolution of the shape of the drill bit by the same type of ball tooth bit to the end face of the central portion of the drill has a central part furrow. For drilling during nucleation, ensure flatness when drilling deep boreholes, only applies to drilling in hard rock and soft rock. Our company produces solder ball tooth variety, good quality. A national leader. Catch up with international brands. The product is made of high quality steel, special heat treatment technology, advanced column inlay technology to ensure product quality.