Audited Supplier
UNT-06
Silver
Unfolded
RoHS, CE, GS
Carbon Steel
Customized
Metabo, DeWalt, Hitachi, MAKITA, BOSCH
2200MPa
70-600mm
40-500mm
Black Oxide,Ti-Coated,Amber Finished,Bright Finish
Drilling Concrete, Brickwork and Nature Stone
Sea Freight, Air, Train, Express
UN
Cartons+ Pallets
3.0mm-25.0mm
China
8467991000
Product Description
| Carbide Tip | HRA92.1 |
| Diameter | 3.0mm-25.0mm |
| Length | 70-600mm |
| Working Length | 40-500mm |
| Material | Carbon Steel |
| Surface Treatment | Black Oxide, Ti-Coated, Amber Finished, Bright Finish |
| Packaging | PVC Pouch, Plastic Tube, Plastic Hanger |
| Application | Drilling Concrete, Brickwork, and Nature Stone |
| Customization | Acceptable |
| Brand | Union, OEM |
| Standard | DIN, ISO |
| Origin | China |
Drill bits are cutting tools used to create cylindrical holes in materials such as wood, metal, concrete, and masonry. They are an essential tool for construction, manufacturing, DIY projects, and more. They are sold mostly as tool sets.
Drill bits come in sizes ranging from small 1mm bits to large 50mm bits and above. The material, surface treatment coating, and packaging design affect their performance and applications. Understanding drill bit types and using the correct one is key to efficient drilling. Regular maintenance and replacement of worn bits are also important. Overall, drill bits are indispensable tools that provide the openings and holes required in all kinds of DIY, building construction, and machine manufacturing work.
| Recommended Cutting Parameter Table for Processing Various Materials Using High-Speed Steel Plate Drills | |||
| Material | Cutting speed m/min | Feed rate mm/r | Coolant ml/min |
| Low-carbon steel | 18-25 | 0.08-0.13 | ≥40 |
| Medium-carbon steel | 15-23 | 0.08-0.13 | ≥40 |
| High-carbon steel | 13-20 | 0.07-0.13 | ≥40 |
| Structural alloy steel | 14-22 | 0.07-0.13 | ≥40 |
| Tool steel | 11-16 | 0.07-0.13 | ≥60 |
| Stainless steel | 9-15 | 0.06-0.11 | ≥200 |
| Aluminium | 60-80 | 0.2-0.25 | ≥80 |
| Cast iron | 20-40 | 0.1-0.16 | No compressed air cooling required |
| Bronze | 21-30 | 0.12-0.18 | No compressed air cooling required |
| Brass | 35-50 | 0.15-0.21 | ≥40 |
| Titanium alloy | 4-10 | 0.07-0.13 | ≥200 |
| Manganese alloy | 10-18 | 0.05-0.1 | ≥400 |
| Superalloy | 8-20 | 0.05-0.1 | ≥400 |
| Recommended Cutting Parameter Table for Processing Various Materials Using Carbide Steel Plate Drills | |||
| Material | Cutting speed m/min | Feed rate mm/r | Coolant ml/min |
| Low-carbon steel | 38-50 | 0.07-0.12 | ≥40 |
| Medium-carbon steel | 35-45 | 0.07-0.12 | ≥40 |
| High-carbon steel | 35-45 | 0.07-0.12 | ≥40 |
| Structural alloy steel | 30-40 | 0.07-0.13 | ≥40 |
| Tool steel | 25-40 | 0.07-0.13 | ≥60 |
| Stainless steel | 12-21 | 0.08-0.12 | ≥200 |
| Aluminium | 80-120 | 0.15-0.2 | ≥80 |
| Cast iron | 55-75 | 0,1-0.15 | No compressed air cooling required |
| Bronze | 48-60 | 0.1-0.15 | No compressed air cooling required |
| Brass | 30-42 | 0.1-0.15 | ≥40 |
| Titanium alloy | 6-15 | 0.1-0.13 | ≥200 |
| Manganese alloy | 15-28 | 0.07-0.1 | ≥400 |
| Superalloy | 13-24 | 0.07-0.1 | ≥400 |
| Main Fastener Coating | |||
| Types | Application | Spray Test Hours | Characteristics |
| Mirror Nickel-plating | ALL Metal | 72Hours | Stable Excellent polishing performance Improve Wear resistance Wide range of applications |
| Matt Nickel-plating | ALL Metal | 72Hours | |
| Black Nickel-plating | ALL Metal | 48Hours | High absorption rate of solar energy Used in solar collector panels. |
| Manganese Phosphate | ALL Metal | 72Hours | Enhanced resistance |
| Sand Blast | ALL Metal | - | Remove paint, rust, and residue scratches or casting marks |
| Electrophoresis | ALL Metal | 1000Hours | Maintain metallic luster Anti-corrosion properties |
| Color Electroplating | ALL Metal | 96Hours | Improve mental strength Prevent metal oxidation |
| Steel Material Chemical Composition | ||||||||
| Types | C | Si | V | Cr | Mn | Ni | Mo | Characteristic |
| CR-MO | 0.18-0.23 | 0.15-0.35 | - | 0.40-0.60 | 0.90-1.20 | - | 0.13-0.20 | 41xx-series SAE steel grades Excellent strength-to-weight ratio Stronger and harder Not easily welded |
| CRV | 0.5 | 0.3 | 0.18 | 0.80-1.10 | 0.70-0.90 | - | - | 6000-series SAE steel grades Suitable for hardening Resist abrasion, oxidation, and corrosion Improve material elasticity |
| S2 | 0.40-0.55 | 0.90-1.20 | <0.50 | - | 0.30-0.50 | <0.30 | 0.30-0.60 | One of seven types of shock-resisting steels under the AISI Classification High strength High toughness Wear resistance High hardness Resistance to shock loading |
| 45# | 0.42-0.05 | 0.17-0.37 | - | ≤0.25 | 0.50-0.80 | ≤0.25 | - | Compared with A3, it has higher strength and resistance to deformation. |
| A3 | 0.95-1.05 | 0.10-0.50 | 0.15-0.50 | 4.75-5.50 | 0.40-1.00 | - | 0.90-1.40 | High-quality high carbon alloy tool steel |
