SD12 DTH Drill Bit – 12 Inch Large Hole Mining DTH Button Bit for 305-500mm Well Drilling (Down the Hole Hammer Bit)

Professional 12-inch DTH (Down-The-Hole) drill bit designed for 305-500mm well drilling applications in demanding mining and construction environments.

Engineered for high-pressure drilling operations, our 12-inch DTH drill bits deliver consistent penetration rates even in deep holes. Direct piston-to-bit contact minimizes energy loss, ensuring efficient rock fragmentation across long borehole lengths.

• Best for: Soft and medium compact, low abrasive rocks
• Produces: Large cuttings
• Not suitable for: Badly fractured rocks

• Best for: Very hard, abrasive rocks and deep hole drilling
• Features: Strong, rugged shape for high performance and long service life in all conditions

• Best for: All soft and medium rock conditions, including fractured and fissured rocks

• Direct piston-to-bit contact for minimal energy loss
• Nearly constant penetration rate regardless of hole length
• Medium to large drilling diameters
• Works in high-pressure range for deep hole lengths
• High-grade tungsten carbide inserts
• Bit bodies: high-grade steel with CNC machining and advanced heat treatment