End surface design in the form of DTH DTH drill bit is an important part submersible drilling rig, the end face of the design in the form of high pressure DTH drill bit used, there are four: the end face of the convex type, planar end face, face concave and the end furrow center type. 1, the end face of the convex type: This drill two forms, single and double boss bosses face, submersible drilling rig, which is mainly used for large diameter DTH Bits. Convex end surface drill DTH drilling in hard and hard to maintain when abrasive rock drilling higher rate, but poor flatness drilling, drill hole offer does not apply to blasthole flatness requirements higher drilling project. 2, the end face of the flat-type: this shape drill relatively durable, Shandong submersible drilling rig for drilling hard and very hard rock, drill hole Which is good, but also for demanding drilling blast holes flatness of the hard rock and soft rock. 3, face concave: this shape drill head has a conical end face of the concave portion is formed in the drilling process, the drill slightly to keep the drill bit nucleation of performance, blast hole drilling has a good straight line degree, this drill row powder effect, drilling speed, is currently on the market use more DTH Bits. 4, the end face of the center furrow: This drill shape is evolved from the same type of ball tooth bit to the end face of the central portion of the drill bit has a deep concave central portion. For drilling during nucleation, ensure flatness when drilling deep boreholes, only applies to drilling in soft rock and hard rock. Applications Applications anchor rig Anchoring drilling rig: The rig model is mainly used in power plants, road and rail mountain slope control anchor reinforcement, tunnel pipe - shed support, foundation piles anchor cable-stayed, anti - floating anchor, ground source heat pump wells, embankment reinforcement, hydropower dam foundation and dam seepage treatment, drainage holes, mine and quarry blast hole, micro pile hole and other projects, particularly suitable for bleaching, egg, crushed gravel stratum and strong weathering rock formations deep hole covered with tube drilling, drilling a variety of techniques can be used, in particular, to reflect its efficient, high-quality performance, to achieve the purpose of rapid drilling through complex formation, has broad anchoring in all kinds of geotechnical engineering application prospects. Submersible drilling rig, dragon industry machinery, sell submersible drilling rig by Dragon Machinery Co., Ltd. Shandong. Submersible drilling rig, dragon industry machinery, sell submersible drilling rig Shandong Dragon Machinery Co., Ltd. (www.longyejixie.com) this year introduced a new upgrade, the above picture is for reference only, please call the telephone or pictures on this page, For the latest information, contact: Guo Lei.