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Use one hand to hold the drill bit in place. tighten the jaws of the drills chuck by turning the metal chuck key with your other hand in a clockwise manner. tighten the chuck jaws as firmly as possible. remove the chuck key, and take your hand off the bit. test the drill to see if it is drilling properly.

Pdc bits from 1″ to 18″ and suitable for hdd horizontal directional drilling, oil and gas, geo-thermal, waterwell, construction and mining. infinity’s rock drilling tooling is manufactured in illinois using the highest quality materials and international quality standards.

Bestlink is china's professional manufacturers and suppliers of 6 inch dth hammer. our factory also provides the best customized service for high-quality dth hammer with ce certification.

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professional nc50 drill pipe Supplier with a high business reputation,from China.Our solutions consist of:professional nc50 drill pipe Goods are mainly exported to European countries,it truly is popular in several nations.


We are an enterprise that export professional nc50 drill pipe to China, we are approved by the relevant state registratio. Primary professional nc50 drill pipe and sell to different regions in China, product out there upon request. We've got the spirit of "customer initial, honesty first" principle, using a quantity of enterprises established long-term cooperative connection.

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