Reaming drilling tools are used when a large diameter is needed to be reamed out after a pilot holes is drilled to a depth
SINODRILLS Reaming drilling tools
Reaming drilling tools are used when a large diameter is needed to be reamed out after a pilot hole is drilled to a depth. We manufacture pilot reaming drilling tools, domed reaming button bits and adapter reaming button bits. Pilot reaming drilling tools consist of pilot adapters and reaming button bits; however, both domed reaming button bits and adapter reaming buttons bits are one-piece designed.
Parameters
• Thread size: R25, R28, and R32.
• Pilot adapter head diameter: 26mm to 40 mm.
• Pilot bit degree: 6°, 12°
• Reaming button bit diameter: 64mm to 102mm.
• Reamer button bit degree: 6°, 12°
Features
• Alloy buttons are hot mounted into the drill bit, ensuring the bit good accuracy and durability;
• Reliability ensured by premium drill bit materials and premium alloy button;
• Different types designed for different drilling scenarios and rock conditions;
• High speed and drilling efficiency;
• Cost-effective, good performance with reasonable price.
Applications
Drilling works for blasting duties in tunneling, construction, mining, quarrying, etc.
|  |  | 
| Pilot Bit | Reamer Button Bits | 
Pilot Bits 6°, 12°
| Diameter | Length | Thread | Taper Degree | |
| mm | inch | mm | ||
| 26 | 1 1/32 | 300 | R25 | 6° | 
| 26 | 1 1/32 | 300 | R28 | 6° | 
| 26 | 1 1/32 | 300 | R32 | 6° | 
| 35 | 1 3/8 | 250 | R25 | 12° | 
| 38 | 1 1/2 | 250 | R28 | 12° | 
| 40 | 1 9/32 | 250 | R32 | 12° | 
Reammer Button Bits 6°, 12°
| Diameter | T.C (tungsten carbide) Buttons | Angle | Taper Degree | ||
| mm | inch | Gauge x mm | Front x mm | Gauge | |
| 64 | 2 1/2 | 8 x 10 | 2 x 9 | 35° | 6° | 
| 76 | 3 | 8 x 11 | 2 x 11 | 35° | 6°, 12° | 
| 89 | 3 1/2 | 8 x 11 | 4 x 11 | 35° | 6°, 12° | 
| 102 | 4 | 8 x 13 | 4 x 13 | 35° | 6°,12° |