Home   Equipment   Information   Download   Contact Us         PRODUCTS   Rock drilling tools     Tapered drilling tools     Thread drilling tools   DTH drilling tools     High air pressure DTH drill bits     Middle-low air pressure DTH drill bits   Roller bits     Mining     Hydrogeology     Oil and gas     Raise drill   Cutting tooth     Mining     Rotary drilling     Graders     Road milling   Construction tools     Shield cutter     Civil engineering tools     Others   PDC drilling tools     PDC anchor bits     PDC full face drilling bits     PDC core bits         Others                 Technical Documents 温锻精密成形技术及在螺纹连接钻头锻坯上的使用.pdf (0.31 MB) Download       金属冷锻精密成形技术研究及其在凿岩工具中的应用.pdf (0.40 MB) Download       锥孔连接球齿钻头冷锻毛坯分析及报价.pdf (0.27 MB) Download       异性螺纹连接钻头.pdf (4.08 MB) Download       矿山油田钻头用硬质合金齿国家标准.pdf (10.90 MB) Download       螺纹连接钻杆国家标准.pdf (5.87 MB) Download       锥形钎杆国家标准.pdf (1.98 MB) Download       金刚石钻头的破岩机理.pdf (0.08 MB) Download