Drill bits and drilling tools

Xinda drill bits and drilling tools are core components of geotechnical drilling operations, widely used in applications such as mining blasting, tunnel excavation, slope stabilization, foundation pit support, subgrade reinforcement, hydraulic engineering, and well drilling.

The product is crafted from premium alloy and high-strength steel, leveraging precision die forging and proven heat‑treatment processes. It boasts exceptional structural strength, excellent stability, and superior wear resistance, making it suitable for a wide range of challenging conditions—including soft soils, composite strata, and hard rock—thus delivering an efficient and reliable solution for drilling operations.

The company specializes in a full range of geotechnical drilling tools, including cone‑shank drill bits, threaded drill bits, downhole hammer bits for medium‑ and low‑pressure as well as high‑pressure applications, eccentric casing‑driving tools, and matching drill rods and accessories. We offer tailored selection and custom manufacturing to suit diverse geological conditions and equipment operating parameters.

Backed by a robust production system and stringent quality control, Xinda remains committed to the R&D and manufacturing of high‑quality drilling tools. Our products have undergone rigorous field testing, delivering stable performance and exceptional durability, thereby supporting safe and efficient construction across a wide range of geotechnical projects.

Product Center

Drill bits and drilling tools

Everything

Everything
Product Management

Xinda drill bits and drilling tools are core components of geotechnical drilling operations, widely used in applications such as mine blasting, tunnel excavation, slope stabilization, foundation pit support, subgrade reinforcement, hydraulic engineering, and well drilling.

Backed by a robust production system and stringent quality control, Xinda remains committed to the R&D and manufacturing of high‑quality drilling tools. Our products have been rigorously tested in numerous field applications, delivering stable performance and exceptional durability, thereby supporting safe and efficient construction across a wide range of geotechnical projects.

GSD Series DTH Drill Bits

GSD Series

GSD Series DTH Hammer Bits

GSD Series

GQL Series DTH Drill Bits

GQL Series

GQL Series DTH Hammer Drills

GQL Series

GM Series DTH Drill Bits

GM Series

GM Series DTH Hammer

GM Series

GD Series DTH Drill Bits

GD Series

GD Series DTH Hammer Bits

GD Series

Tapered-hole connection drill bit

Top hammer drilling tools

Threaded connection drill bit

顶锤式钻具

< 1 >

Product Center

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?

Drill bits and drilling tools

GSD Series DTH Drill Bits

The GSD series down-the-hole (DTH) drill bits are exclusively designed to match the GSD valve‑less, high‑pressure DTH hammer. Featuring an SD‑series structural design, they are compatible with drill‑bit systems of the same specification and can operate across a wide pressure range of 1.2–3.2 MPa. Constructed with a high‑strength alloy steel body and equipped with high‑toughness tungsten carbide ball teeth, these bits undergo precision machining and multi‑stage heat treatment, minimizing impact‑energy loss. They are specifically engineered for hard, highly abrasive rock formations such as granite, basalt, and hard quartzite, and are widely used in open‑pit mining deep‑hole blasting, slope stabilization in transportation infrastructure, rock‑well drilling, and geotechnical hazard mitigation projects.

View details +

GSD Series DTH Hammer Bits

The GSD series valve‑less high‑pressure downhole hammer features an advanced self‑venting design that eliminates traditional valve‑plate components, accommodating a wide air‑pressure range of 1.2–3.2 MPa. By leveraging the piston’s intrinsic structure, it achieves automatic airflow reversal, with high‑pressure gas directly driving the piston to deliver high‑frequency reciprocating impacts on the drill bit. Paired with the GSD series’ dedicated downhole drill bits, this system is optimized for drilling in hard rock and highly abrasive formations, finding extensive application in open‑pit mining, civil‑engineering anchoring, rock drilling, and geotechnical stabilization projects. The valve‑less architecture reduces maintenance requirements associated with valve plates, enhancing operational stability during continuous drilling. It is ideally suited for long‑duration, uninterrupted, large‑scale drilling operations.

View details +

GQL Series DTH Drill Bits

The GQL series DTH drill bits are exclusively designed to match GQL series valve‑type DTH hammers. Featuring a QL‑series structural design, they are compatible with corresponding drill‑bit systems and operate effectively under air pressures of 1.0–2.4 MPa. Constructed with a high‑quality alloy‑steel matrix and equipped with high‑toughness tungsten carbide ball teeth, these bits leverage precision machining and advanced heat‑treatment processes to ensure efficient transmission of impact energy. They are well suited for medium‑hard to hard rock formations such as limestone, granite, and basalt, and are widely employed in mining operations, geotechnical support for transportation infrastructure, water‑well drilling, and soil‑and‑rock remediation projects.

View details +

GQL Series DTH Hammer Drills

The GQL series high‑pressure downhole hammer features a QL‑series structural design, compatible with drill‑tool systems of the same specification. It employs a proven valve‑type air‑distribution mechanism and is suited to operating pressures ranging from 1.0 to 2.4 MPa. Relying on a stable, reliable air‑distribution system and an optimized piston‑impact mechanism, it efficiently converts pneumatic energy into impact kinetic energy. When used in conjunction with the GQL series’ dedicated downhole drill bits, it delivers exceptional performance. This product is widely applied in open‑pit mining, support for transportation infrastructure, water‑well drilling, and geotechnical borehole operations, and is capable of handling medium‑hard to hard rock formations such as granite, limestone, and basalt, balancing versatility with sustained operational reliability.

View details +

GM Series DTH Drill Bits

The GM series high‑pressure DTH drill bits are exclusively designed to match GM valve‑less DTH hammers, operating effectively under high‑pressure conditions of 1.2–3.0 MPa. They have been specifically developed for hard, highly abrasive rock formations such as granite and basalt. The drill bits feature precise spline and air‑channel alignment with GM hammers, efficiently transmitting high‑frequency impact energy. They are widely used in hard‑rock drilling applications, including open‑pit mining, infrastructure anchoring, photovoltaic pile foundations, and medium‑to‑deep hole rock drilling.

View details +

GM Series DTH Hammer

The GM series valve‑less high‑pressure downhole hammer is designed to operate with a 1.2–3.0 MPa high‑pressure air supply. Featuring a novel internal air‑distribution design without foot valves, it is specifically engineered for granite, basalt, and other highly abrasive, hard rocks. It serves as the primary drilling tool for open‑pit mining, infrastructure anchoring, photovoltaic pile foundations, and deep‑well drilling. Compared with conventional foot‑valve hammers, the GM series eliminates valve‑plate breakage and sticking issues, delivers higher impact frequencies, and reduces air consumption. When paired with the matching GM series downhole drill bits, it minimizes energy‑transfer losses, ensuring stable, efficient performance in deep‑hole drilling across all operating conditions—covering everything from small to large diameters.

View details +

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.

View details +

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.

View details +

Tapered-hole connection drill bit

The tapered‑hole drill bit, also known as a tapered ball‑tooth钎head, achieves secure connection through friction between its internal conical bore and the tapered shank of the drill rod; it features a threadless design and is compatible with pneumatic rock drills mounted on air leg supports or handheld units (such as the YT28 and YT24 models—light‑weight drilling equipment). It is classified as a shallow‑hole top‑hammer rock‑drilling tool. Constructed with a high‑strength alloy steel body and wear‑resistant tungsten carbide ball teeth, it breaks rock by combining impact and rotary action. Primarily used for drilling shallow holes up to 3–5 meters deep (with a recommended maximum of 3 meters for larger diameters), this tool boasts a simple structure, quick disassembly and assembly, and excellent cost‑effectiveness. It finds widespread application in small‑scale mining, shallow‑hole tunneling, quarrying blast‑hole drilling, slope‑anchor bolt drilling, and other lightweight shallow‑hole rock‑drilling operations.

View details +

Threaded connection drill bit

Threaded‑connection drill bits are top‑hammer rock‑drilling tools that connect directly to the drill rod via a standard threaded shank at the tail. Unlike spline‑type bits used with downhole impactors, they are compatible with hydraulic rock‑drilling rigs, open‑pit top‑hammer drills, anchor‑bolt rigs, and other top‑impact drilling equipment. Featuring a high‑strength alloy‑steel body paired with high‑toughness tungsten‑carbide ball teeth, these bits rely on the impact energy and rotational torque delivered by the rig’s front‑end impactor to fracture rock, making them well suited for medium‑ and small‑diameter, medium‑to‑deep hole drilling. They are widely employed in tunnel excavation, underground mining, slope‑stabilization anchoring, quarry blasting, and similar applications, delivering excellent hole straightness and proving ideal for staged‑rod‑extension operations involving medium‑to‑deep holes.

View details +

< 1 >