T45 Thread Drill Bit Extension Rod DTH Drill Pipe 610mm-6095mm for Mining and Construction
Thread Type: T45
Length Range: 610mm - 6095mm (2-20 feet)
Applications: Hole Drilling, Coal Mining, Quarry Operations, Construction, Stone Drilling
Compatible Threads: R25, R28, R32, T38, T45, T51
Extension rods are manufactured from hollow drill steels and are available in two configurations: round type and hexagonal type. The hollow center serves as a flushing hole for transmitting water or air during drilling operations. Thread connections allow for secure attachment to couplings, shanks, and button bits.
These extension drill rods are engineered for drifting, tunneling, long hole drilling, bench drilling, and production drilling applications. Available in round or hexagonal sections with various thread designs, they feature Male/Male (M/M) or Male/Female (M/F) connections. All drifting and extension drill rods undergo specialized heat treatment processes including carburization or high frequency treatment combined with phosphorization for enhanced durability.
| Body Shape | Length (mm) | Length (feet) | Driven Thread | Suitable Bits | Drilling Hole Range (mm) | Drilling Hole Range (inch) |
|---|---|---|---|---|---|---|
| Hex.25 | 610-1220 | 2-4 | R25, R28, R32 | R25 | 33-51 | 1 19/64-2 |
| Hex.28 | 1220-3050 | 4-10 | R28, R32, R38 | R28 | 37-51 | 1 29/64-2 |
| Hex.32 | 2475-5525 | 8-18 | R28, R32, R38, T38 | R32 | 40-64 | 1 37/64-2 1/2 |
| Hex.35 | 3700-6400 | 12-21 | R32, R38, T38 | R32 | 45-76 | 1 3/4-3 |
| Round 32 | 915-4270 | 3-14 | R32, R38, T38 | R32 | 45-64 | 1 3/4-2 1/2 |
| Round 39 | 610-6095 | 2-20 | R38, T38, T45 | T38, T45 | 57-89 | 2 1/4-3 1/2 |
| Round 46 | 1525-6095 | 5-20 | T38, T45, T51 | T45, T51 | 70-102 | 2 3/4-4 |
| Round 52 | 1525-6095 | 5-20 | T45, T51 | T45, T51 | 76-127 | 3-5 |
Order Format: Length + Thread + Body Shape and Diameter
- Premium Quality: Partnership with leading Chinese factories ensures superior product quality
- Competitive Pricing: Direct factory pricing provides cost-effective solutions
- Fast Delivery: Standard production time of 25 days, reduced to 3-5 days for in-stock items
- Rigorous Quality Control: Experienced QC team conducts comprehensive inspection and testing
- Technical Expertise: Extensive industry experience enables effective problem-solving capabilities
- Custom Manufacturing: Full OEM and ODM services available to meet specific requirements
- Comprehensive Support: On-site technical assistance available when needed
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