DTH Bits

Your Professional Down the Hole Bit Manufacturer

A down the hole bit, also known as a DTH drilling bit or percussion drilling bit, is a precision-engineered tool that works in conjunction with pneumatic DTH hammers to break rock formations. As a leading manufacturer in China with over two decades of expertise, MSD has perfected the design and production of these critical consumables. Our DTH bits deliver superior penetration rates, extended service life, and exceptional reliability across mining, water well drilling, geothermal, foundation piling, and construction applications.

The Core of Performance: Tungsten Carbide, Face Design, and Button Placement

The performance of any DTH bit depends on the synergy between its core components. Tungsten carbide buttons are the cutting edge—forged under extreme pressure and hardened to resist impact and abrasive wear. Their precise placement and seating depth determine drilling efficiency and service life. The face profile—center drop, concave, convex, or flat—is engineered to match specific rock formations, ensuring optimal penetration rates and hole straightness. The steel body, hardened to 55-60 HRC, provides structural integrity and gauge stability. Together, these elements maximize rock destruction efficiency while minimizing button wear and bit consumption costs.

Matching Bit Design to Your Rock Formation

Selecting the correct bit design for your drilling application is critical to maximizing performance and minimizing costs. For soft to medium-hard, low-abrasive formations, center drop and convex face designs deliver fast penetration with efficient flushing. For diverse or unpredictable rock conditions, the concave face profile is the industry workhorse—versatile, reliable, and suitable for almost all applications. For very hard, abrasive, and fractured rock requiring high air pressure and extended service life, the flat face design is the ultimate choice. Our comprehensive size range—from 3" to 24"—and multiple diameter options within each size class ensure you can optimize hole utilization and reduce bit consumption. All MSD DTH bits are compatible with DHD, QL, MISSION, and SD series hammers, guaranteeing seamless integration with your existing fleet.

Why Partner with MSD?

Beyond manufacturing, we provide complete drilling solutions. Our engineers analyze your project's geology, hammer specifications, and operational objectives to recommend the ideal bit design, size, and shank type for your application. By optimizing the entire system—hammer, bit, and drilling fluid—we help you achieve the lowest possible cost per meter drilled. With a massive inventory spanning all sizes and face profiles, combined with agile production capability, we ensure your project stays on schedule without delays. MSD delivers OEM-quality DTH bits at competitive Chinese factory pricing, backed by technical support and proven reliability across 50+ countries. Trust MSD for drilling tools and expert partnership that maximize your project profitability.