34mm button bits 7degree 8 buttons Applications: In the past ten years, the research and development and production of medium and high wind pressure ....
Retract Bit T38 3-1 / 2 " Main Features 1. Non-Blocking:Our S-series DTH hammers are proved to ensure extremely low rate of blocking during it works. ...
High performance well drilling Top hammer button bit drill bit Main Features: 1. Non-Blocking:Our S-series DTH hammers are proved to ensure extremely ...
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