- HSS DRILL BIT: HSS cobalt drill bit set for hardened steel has excellent cutting performance, drill bit set of 29pcs can be used for a long time, The cutting edge is hardened and honed for sharpness, with superior sharpness, accurate cutting without shaking
- M35 COBALT CHARACTERISTICS: The M35 cobalt drills bit set is effective in drilling tough, high-tensile strength materials, drill bit is especially good at cutting hard metals such as stainless steel, cast iron, superalloy, titanium alloy, hard plastic, and wood. It can also be used in soft materials
- 135° SPLIT POINT: Cobalt drill bit set for hardened steel is 135° split point tip and torsional design to improve cutting speed, self-centering, prevent walking, and faster chip and particle removal.
| How to choose drill bits? |
For wood: these types of drill bits can be used on any wood, whether it is softwood, hardwood, veneer, or plywood.
For metal: these drill bits are used to drill any kind of metal. When it comes to drilling bits for metal, inserts are only used for machine tools.
For masonry: these steel drill bits have a brazed tungsten carbide tip.
For tile and glass: these drill bits look like small spears. They are characteristically used with a low drilling speed.
| Manufacturing |
Surface Finish |
Sharpening |
| White |
Black |
B&W |
Tin Coated |
Amber |
Black&Gold |
118° |
135°S.P. |
Turto Max |
118°S.P |
Web Thinning |
| Rolled Forged |
|
√ |
√ |
|
|
|
√ |
√ |
|
√ |
|
| Rolled Polished |
√ |
√ |
√ |
√ |
√ |
|
√ |
√ |
|
√ |
|
| Fully Ground |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
√ |
|
| Milled |
√ |
√ |
√ |
√ |
|
√ |
√ |
|
|
|
√ |
| Standards |
DIN338,DIN1897,DIN340,DIN1869,DIN345,DIN333 |
| Jobber length, ScrewMachine Length, Taper length, Aircraft Extension |
| Material |
HSS4241,HSS4341,HSS6542(M2),HSS CO5%(M35),HSS CO8%(M42) |
| Shank |
Straight shank(Parallel shank), Reduced Shank, hex shank,1/4″Quick change shank,3Flats shank,1/2"shank,3/8"shank |
| Helix Angle |
Type N, Type W, Type H |
| Rotating |
Right Hand, Left Hand |
| Flute |
Normal, parabolic |
| HSS NO. |
HSS GRADE |
HRC(Rockwell Hardness) |
| 4241 |
Mo2Cr4Vsi |
60-62 |
| 4341 |
Mo3Cr4Vsi |
62-65 |
| 9341 |
Mo3Cr4V |
63-66 |
| 6542/M2 |
Mo5Cr4V2 |
63-66 |
| M35 |
Mo5Cr4V2Co5 |
64-67 HSS Co5% |
Sino abrasives designs, develops, integrates and manufactures a complete range of cutting, grinding and polishing products for all kinds of customers. Including, Superhard materials- Diamond tools, CBN tools, T.C.T tools, Resin bonds abrasives, Sanding tools, Non-woven tools and so on.
Sino Abrasives Limited was born in 2003. It's initially just an abrasives tools factory. After a decade hard work, we had been a integrity manufacture, owned the full automatic abrasives production line, Superhard materials production line and Laser welded line.
We are always focus exclusively on the Creative and Service. We sincerely hope can supply the most appropriate service and products to you!
Raw material cost advantages:
Sino abrasives limited are cooperated with the best partners including international suppliersand domestic suppliers:3M, NCA BUFFALO, CUMI, SINOMACH, ZHONGNAN, ZZSM and so on.
Quality supervise system
We firmly believe that management is the first productive force. Sino abrasives limited had been certificated by ISO 9001 at 2009.
Meanwhile, we had built ourselves quality management system- Smart system. Advanced chemical analysis equipment, scientific quality control methods, strict management system had ensured we can do standardized regulation and information records for daily work: it starts from rawmaterials, to production, to the finished product testing and so on.
1. Are you a manufacturer?
A: Yes, we have our own factory, and have excellent research team, and strict quality inspection procedures. We will surely don't
have a middleman. Also, welcome you visit our factory.
2. What about your quality?
A: We have strict quality inspection procedures, and each of our new products has been tested before launching in the market.
3. Can you provide samples?
A: Yes, we can provide samples for you, yet the express fee need to be paid by you.
4. If you don't have the size I need, can I have a requirement?
A: Yes, if the size you need we don't have, we can manufacture it to your requirement. It will have a minimum order.
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