GD Series

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GD Series DTH Drill Bits

GD Series

GD Series DTH Hammer Bits

GD Series

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Sales hotline: 19083069638

Customer Service Hotline: 0731-22530680

info@cinda-tec.com

Frequently Asked Questions

The cutterhead of the tunneling machine has turned into a “wheel of fire”—is it because the cutting picks are hard enough, or are there operational hazards at play?

Why is the alloy tip intact, yet the cutting tooth has fractured at the root?

GD Series

GD Series DTH Drill Bits

The GD series high‑pressure DTH drill bits are exclusively designed to match the entire GD line of DTH hammers, operating with a high‑pressure air supply of 1.0–3.0 MPa. They are engineered for hard, highly abrasive rock formations such as granite and basalt, featuring a spline‑type connection that ensures precise engagement with the hammer. By efficiently transmitting high‑frequency impact energy, these bits effectively break rock, making them ideal for deep‑hole drilling in hard rock applications—including open‑pit mining, infrastructure anchoring, pre‑splitting blasting, and water‑well drilling.

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GD Series DTH Hammer Bits

The GD series high‑pressure DTH hammer is a core downhole rock‑drilling tool designed to operate with high‑pressure air sources ranging from 1.0 to 3.0 MPa. It utilizes high‑pressure compressed air to drive an internal piston that delivers high‑frequency reciprocating impacts to the drill bit, enabling efficient drilling of hard rock through a “impact‑breakage plus low‑speed rotation” mode. The GD series is widely suited for applications such as open‑pit mining, construction‑blasting holes, water‑well drilling, slope anchoring, and tunnel advance drilling. Unlike low‑pressure hammers, the GD series features enhanced wear‑resistant designs for the cylinder, piston, and air‑distribution system, resulting in reduced impact‑energy loss under high‑pressure conditions. This leads to significantly increased penetration rates in granitic, basaltic, and highly abrasive hard‑rock formations, making it the primary drilling equipment for medium‑ and large‑diameter deep‑hole operations.

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