Lengthening Type Screw Drill Rod
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Payment
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Origin
China Mainland
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Minimum Order
1
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Packing
Pieces
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- Description
Product Detail
Spiral drill pipe even extension drill rod. Extension drill rod can be divided into the internal and external layer; outer circle has six key. To form a three track rail. Coinciding with the special power head bond with the transmission torque; drill pipe inner tube is depressed note concrete used. But also strengthen the drill pipe; the extension drill rod of special structure. The CFG long helical drilling in is not increased, without increasing the size of a rig the conditions to increase drilling depth. And thus the whole device with a low center of gravity, greatly improves the stability of the whole machine.
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