API 2 3/8" Reg Connection Thread 4inch DTH Hammer for Rock Drilling Cop44 Made of Alloy Steel

Changsha Chaojingang Machinery Manufacturing Co., Ltd. is one of the  best manufacturers in China's drilling tool industry. Our company has many senior mechanical design engineers with more than 20 years of design experience in the drilling tool, the production process and technology are at the first-class level in China. Our drill tools adapt the top-quality raw materials, equipped with a complete production chain, and with excellent performance during service life. The design of our hammer and bit is simple and reasonable, with the characteristics of high flat degrees, smooth holes, high rigidity, fast punch speed, low failure rate, stable drilling, high penetration rate. The drilling depth exceeded customer expectations and was well received by customers.We are able to manufacture and supply wide range of quality products as follows:
1. DTH hammer and bit, similar or equal DHD, QL, Mission, SD, COP and Numa series ;
2. RC hammer and bit, similar or equal RE531, RE542, RE543, RE545, RE547, PR40, PR52/PR52R, PR54/PR54R, RE004, AD670, MX5456 and so on;
3. ODEX system;
4. Coupling sleeves, R25, R32, R38, T38, T45, T51;
5. Button bits, connection tapered or threaded, diameter from 33mm to 165mm;
6. Drill pipes: 64mm, 70mm, 76mm, 89mm, 102mm, 127mm, 140mm, 152mm and so on.
Our factory locates in LiuYang city, HuNan province, China, where occupies an area of 26,600 square meters, and production facility occupies 22,000 square meters.
Premium quality, professional serivce and competitive price, we get very good reputation from our worldwide customers, not only from the domestic, but also from Brazil, Peru, South Africa, Australia, Turkey, Russia, Ukraine, Korea etc..