Cae on reverse circulation structure of buried pore hammer bit ofthrough model with gas - operated 贯通式气动潜孔锤钻头反循环结构的计算机辅助设计
Application of dth drilling with simultaneous casing in high pressure spiral jet grouting technology in pebble formation 潜孔锤跟管钻进技术在卵石层高压旋喷灌浆工艺中的应用
8 it can be used with various drilling method such as carbide bit drilling , anger drilling , dth hammer drilling , follow - up casing drilling etc . 3 8钻机可适用多种钻进工艺方法，如合金回转钻进螺旋钻进潜孔锤钻进跟管钻进等。
8 it can be used with various drilling methods such as carbide bit drilling , anger drilling , dth hammer drilling and follow - up casing drilling etc . 3 8钻机可适用多种钻进工艺方法，如合金回转钻进螺旋钻进潜孔锤钻进跟管钻进等。
8 the rig is suitable for various drilling methods such as carbide bit drilling , auger drilling , dth hammer drilling , follow - up casing drilling , etc . 3 8钻机可适用多种钻进工艺方法，如合金回转钻进螺旋钻进潜孔锤钻进跟管钻进等。
3 transmission , built in the top drive power head , has two speed range ? high and low . it can meet the requirements of both dth hammer drilling and carbide bit drilling 3动力头设有变速装置，有高低两个档次，以满足潜孔锤钻进及硬质合金回转钻进方法。
You may expect satisfactory fuii benefits with these crawler rigs , which integrate the high - efficiency dth drill , high torque rotator and very adaptable travelling ability and large power powerful dust - collector Kqlg115 kqlg165履带式高气压潜孔钻机高效率冲击器大扭矩回转器高适应性运行能力
Gravel layer is a usual complex instable formation in drilling engineering . there are some basic features such as looseness of structure , increment , unequal sized grain . it is commonly to form discrete single - grained structure 在三个计算式的基础上采用visualbasic编制了潜孔锤同心跟管钻进风量、风压计算及空压机选型程序。
Changsha lnstitute of mining research cimr with rich design experiences is the earliest to be engaged in research on downhole drilling tools and rock drill bits in china and has carried on the work more than 25 years 我公司这次在这次展览会上展出了cs165 , cs100d , cs100l和潜孔钻机，并进行了高压水射流技术的介绍和推广工作。产品的技术领先得到了很多公司的认同。
As an important production base of the group , the company mainly manufactures drilling products , including a series of bits , shanks , couplings and dth bits , and provides a set of complete drilling service for the global clients 作为宝长年集团重要的生产基地，公司主要生产钎具类产品，主要包括系列钎头、钎尾、连接套和潜孔钎头，而且能够为全球的客户提供一套完整的凿岩装备服务。
