coal drill rod
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Quality/Safety Certification: 0.00
1.high strength
2.coarse pitch
3.high elastic
4.rigid
5.high efficiency
1.coal drill rod introduction
1.high strength
2.coarse pitch
3.high elastic
4.rigid
5.high efficiency
2. coal drill rod
New type coal drill rod
Material: seamless pipe, T-shape strip steel
Craft: prestressed wire winding, welding.
Features:
1. 45% lighter than the old type spiral drill rod;
2. Quick drilling
3. Less stive, clear hole forming
4. Long lifetime
Types: single spiral, double spirals; with drainage hole type and w/o drainage hole type.
Connection type: spring pin; thread
3.coal drill rod parameter
| Specifications and Size (mm) | Torque (N.m) | Connection type | |||
| Dia. (spiral+tube) | Tube dia. | Length | Connector | ||
| 26 | 16 | 500~3000 | M16×1.5 | 100~150 | Thread |
| 28 | 16~18 | 500~3000 | F12/M18×1.5 | 100~150 | Square shank/thread |
| 30 | 16~18 | 500~3000 | F12/M18×1.5 | 100~150 | Square shank/thread |
| 32 | 18~22 | 500~3000 | F12/M16×1.5 | 100~250 | Square shank/thread |
| 38 | 21~22 | 500~3000 | F14/Tr16 | 150~350 | Square shank/thread |
| 40 | 21~22 | 500~3000 | F14/Tr16 | 150~350 | Square shank/thread |
| 42 | 21~22 | 500~3000 | F14/Tr16 | 150~350 | Square shank/thread |
| 45 | 25~27 | 500~3000 | F18/Tr19 | 350~450 | Square shank/thread |
| 55 | 25~27 | 500~3000 | F18/Tr19 | 350~450 | Square shank/thread |
| 65 | 25~27 | 500~3000 | F24/Tr19 | 350~450 | Square shank/thread |
4.coal drill rod photo
