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As a rule of thumb, the smallest hole diameter a dth hammer can drill is its nominal size. i.e. standard 102 mm (4”) hammer will drill a hole down to a minimum diameter of 102 mm (4”). the limiting factor is the outside diameter of the hammer, because as the hole diameter reduces due to diameter wear of the bit, airflow is restricted.

Dth hammer, down the hole hammer, rock drilling hammer manufacturer / supplier in china, offering hjg water well drilling 6 inch dth hammer, cemented carbide for mining, crawler hydraulic well-geothermal drilling rig hjg-w828a and so on.

Professional hot sale dth water hammer merchandise of China supplier for international and neighborhood trade company.Being the top solutions of our factory,our hot sale dth water hammer solutions series have been tested and won us experienced authority certifications. For additional parameters and item list details,please click the button to acquire additional information.


hot sale dth water hammer exporter from China, we're essentially the most qualified supplier from USA with ISO9001 Certification. Also the solutions have already been certified by mutiple safety certification.We'll offer you our hot sale dth water hammer priducts in top-quality and most favourable value.

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