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  • 3.5 inch drill bit
  • 4 inch drill bit
  • 5 inch drill bit
  • 6 inch drill bit
  • 8 inch drill bit
  • DHD, QL, SD classic impactor series
  • A-type fast impactor series
  • B-type high frequency impactor series
  • C-type high-speed impactor series
  • D-type energy-saving impactor series
  • CIR low wind pressure impactor series
  • Eccentric tube drilling tool series
  • Concentric with tube drilling tool series
  • Slider and tube drilling tool series
  • Positive cycle once to form a hole
  • Positive circulation double reaming type
  • Reverse circulation once to form a hole
  • Reverse circulation secondary reaming type
    •        CONTACT US
    Shandong zhongrui construction machinery co. LTD
    Address : 3701 Zhuangjian Road, Kuiwen Economic Development Zone, Weifang City, Shandong Province, China
    Zip code：261041
    Phone：86-536-2288189　
    Manager li：15005366588
    URL：www.zrjx.cn
    Email：15005366588@163.com 
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    Shandong zhongrui construction machinery co. LTD  鲁ICP备10009119号-3

    Address : 3701 Zhuangjian Road, Kuiwen Economic Development Zone, Weifang City, Shandong Province, China

    Zip code：261041    Phone：86-536-2288189    Manager li：15005366588

    Email：15005366588@163.com    Technical support：企化网络


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