The down-the-hole drill bit is a kind of drill bit used in conjunction with the down-hole impactor, and the drilling operation is performed by the spline and the impactor.
  It widely used in mining / quarry / hydropower engineering / drilling water well / side column support.
  It is divided into: low-pressure DTH drill bit, medium and high wind pressure DTH drill bit.
  DTH drill bit and DTH impactor are used together, which has the characteristics of straight drilling, high speed and deep hole drilling.   

   The new diamond DTH drill hole is made of high quality steel and hard alloy as the raw material. After a special heat treatment process, the hardness of the bit bit is reached under rock excavation, and the energy loss in the transmission process is reduced, the stress on the tooth is uniform, Not easy to fall off the teeth and teeth, so the impact of energy-intensive rock to achieve high-efficiency drive.

 Shijiazhuang WeiLiDa Prospecting Machinery Co., Ltd. is a professional manufacturer of drill pipe, drilling rig and other drilling tools. Our factory is located in Jinzhou, Shijiazhuang . 200 km from the capital Beijing. We have good export conditions to Tianjin port and Huanghua port. Our factory covers an area of 20000 square meters. Its total assets is 50 million yuan.
    Our company has advanced friction welding, drill pipe thickening equipment and a variety of molding technology and processing equipment. According to the customer's requirements, we can produce various specifications of the drill pipe and connecting parts of the United States standards. At the same time, we are also equipped with a set of physical and chemical testing machine on the hydraulic pressure, heat treatment, no damage, etc. to ensure the quality of products. At the beginning of the establishment, we passed the certification of CQC and ISO9001. Through years of manufacturing experience and customer's use of reflection, the application, safety and reliability of the domestic industry of our products have reached a leading level. We adhere to the "quality first, reputation first" business philosophy. We do our best to meet the customers’ need .We are very pleased to establish a long-term business relationship with you on the basis of mutual benefit. We believe that we will be your best partner in China.