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FORE POLING System for tunnel Drilling

Date: 2020-01-30
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FOREPOLING RING BITS AND CASINGS are designed for drilling injection casings for tunnel construction in weak ground conditions. Ring bit systems are designed for both top and DTH hammers. 

Generally, pipes with outer diameter of 76-140 mm and wall thickness of 6-10 mm are installed using standard tunneling equipment.





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