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Reverse Circulation DTH Hammers and Bits

Reverse Circulation DTH Hammers and Bits
Best Drilling Tools For You! There are six specifications TH80RC,TH98RC,TH126RC,TH140RC,TH180RC,TH220RC. They can bore holes from 90mm to 305mm. They have unique air distributing route: The flushings ...

Concentric Casing Drilling System(Symmetrix)

Concentric Casing Drilling System(Symmetrix)
where contains some ovals and fractures. Design Principles Make the casing follow easy and the equipment and operation simple Outstanding Advantages The stable and reliable working performance and ...
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