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| Categories | Coal Mining Drill Bits | 
|---|---|
| Brand Name: | MIROC | 
| Model Number: | Coal Mining Drill Bit | 
| Certification: | ISO | 
| Place of Origin: | CHINA | 
| MOQ: | 20 | 
| Payment Terms: | L/C, D/A, D/P, T/T, Western Union, MoneyGram | 
| Supply Ability: | 20000 pieces per month | 
| Delivery Time: | 5-15 Working Days | 
| Packaging Details: | Carton Box or Wooden Box | 
| Cutters: | 2,3,4,5,7,12 | 
| Condition: | 100% New | 
| MOQ: | 20PCS | 
| Color: | on Request | 
| Advantage: | long life / durable | 
| Use: | Well drilling, coal drilling | 
| Technics: | Roll Forged, Fully Ground, Milled | 
| Application: | for the anchor net supporting of coal mine | 
Two Cutter Wings Tungsten Carbide Coal Mining Drill Bit
Our produces a variety of tungsten carbide coal drill bits, mainly: water exploration drill bit, coal mining drill bit, soft rock drill bit, composed drill bit and reaming drill bit. Drill bits are manufactured by casting, precision forging and medium carbon alloy steel machining, and can adapt to different drilling conditions. The bits are widely used in coal, gypsum mine and other soft rock drilling and reaming.
Two Wings Tungsten Carbide Coal Bit
Coal bits are mainly used in coal and mine drilling, have dry-type& wet-type.
1. Mainly used in coal and mine drilling
2.Dry and Wet Type available
3.Dimension:25, 27, 28, 29, 30, 32, 36, 42 mm.
4.Normal Thread Model: M16*2, M14*1.5, M12*1.75, M14*1.5, M12*1.75
5.We can do different measures as per customers demand.
Specifications of twin wing coal bits
| Colliery Drill Tools | Main Standard(mm) | |||
| D | H | L | M | |
| Thread joint | 27 | 44 | 17 | M14×1.5 | 
| 27 | 54 | 17 | M12×1.75 | |
| 28 | 54 | 20 | M12×1.75 | |
| 29 | 52 | 18 | M14×1.5 | |
| 30 | 50 | 18 | M14×1.5 | |
| 32 | 52 | 22 | M14×1.5 | |
| 32 | 56 | 22 | M12×1.75 | |
Specifications for more model coal mining bits
| No | Specification and Size (mm) | Cutters | Structures | ||
| Diameter | Connection Size | ||||
| 1 | 27 | M12x1.75 | M14x1.5 | 2 | integral | 
| 2 | 28 | M12x1.75 | F12x12 | 2 | integral | 
| 3 | 30 | M12x1.75 | F12x12 | 2 | integral | 
| 4 | 32 | M14x1.5 | F12x12 | 2 | integral | 
| 5 | 34 | M14x1.5 | F12x12 | 2 | integral | 
| 6 | 36 | M14x1.5 | F12x12 | 2 | integral | 
| 7 | 38 | T24x5 | F14x14 | 2-3 | integral | 
| 8 | 42 | T24x5 | F13-14 | 2-3 | integral | 
| 9 | 45 | T24x5 | F13-18 | 2-3 | integral | 
| 10 | 55 | T24x5 | F13-18 | 4 | two-stage | 
| 11 | 65 | T24x5 | F13-18 | 4-5 | two-stage | 
| 12 | 75 | T33x4.23 | F13-18 | 4-5 | two-stage | 
| 13 | 76 | T33x4.23 | F18-24 | 4-5 | two-stage | 
| 14 | 82 | T42x5.08 | F18-24 | 4-5 | two-stage | 
| 15 | 85 | T42x5.08 | F18-24 | 4-5 | two-stage | 
| 16 | 89 | T42x5.08 | F24-32 | 5-7 | three-stage | 
| 17 | 95 | T55x5.08 | F24-32 | 5-7 | three-stage | 
| 18 | 110 | T55x5.08 | B35-45 | 5-7 | three-stage | 
| 19 | 125 | T55x5.08 | B35-45 | 5-12 | four-stage | 
| 20 | 135 | T55x5.08 | B35-45 | 5-12 | four-stage | 


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