Carbide drill bits, straight shank drill bits, carbide drill
bit,twist drill bit
Drill bit types: Drill bits can be divided into two categories, one is flat drills,
including twist drills, center drills, deep hole drills and other
drilling drill bits; the other is reaming drill bits, including
countersink drills and other reaming drill bits. Big spiral drill
bits are used in construction projects with an outer diameter of
400 to 600 mm and a length between 12 meters and 8 meters.
Different type drill bits work together to in the complicated task.
Flat-bottom drill bits are used for loose soil layers, rake drill
bits for miscellaneous fill soil layers, and cylinders for
obstacles such as concrete and strips.
Straight shank carbide drill bit,twist drill bit standard size:
| d=D Cutting dia.(mm) | Lc Cutting length(mm) | L Overall length (mm) |
| 0.80-1.00mm | 12mm | 50mm |
| 1.05-1.50mm | 14mm | 50mm |
| 1.55-5.00mm | 18mm | 50mm |
| 2.05-2.50mm | 20mm | 50mm |
| 2.55-3.00mm | 25mm | 50mm |
| 3.05-4.00mm | 25mm | 50mm |
| 4.05-4.50mm | 25mm | 50mm |
| 4.55-5.00mm | 25mm | 50mm |
| 5.05-6.00mm | 25mm | 50mm |
| 6.05-6.50mm | 30mm | 60mm |
| 6.55-7.00mm | 30mm | 60mm |
| 7.05-7.50mm | 40mm | 75/80mm |
| 7.55-8.00mm | 40mm | 75/80mm |
| 8.05-8.50mm | 40mm | 75/80mm |
| 8.55-9.00mm | 40mm | 75/80mm |
| 9.05-9.50mm | 40mm | 75/80mm |
| 9.55-10.00mm | 40mm | 75/80mm |
| 10.05-10.50mm | 45mm | 100mm |
| 10.55-11.00mm | 45mm | 100mm |
| 11.05-11.50mm | 50mm | 100mm |
| 11.55-12.00mm | 50mm | 100mm |
1,Tip angle 118°,d tolerance within 0.005mm
2, Standard size in stock, ready to ship.
2, Accept customize.
product picture:
Specification:
Application:Various materials,tungsten carbide drill bits for
drilling
Length:50-100, standard or customize
Why Choose us ?
1, Stable good quality.
2,Competitive price
3,Timely delivery of consignments
4,Excellent after sales, technical support
