Yanggu Henglong Construction Machinery Co., Ltd.
| Payment Terms | T/T |
| Body Material | 42CrMo alloy steel |
| Outer Diameter | 28 mm |
| Delivery Time | 7-15 Days |
| Flute Type | Spiral / straight |
| Bit Range | 17-28 mm |
| Carbide Grade | YG8 / YG6 |
| Packaging Details | Wooden Boxes , Cardboard Boxes |
| Working Air Pressure | 0.5-0.7 MPa |
| Supply Ability | 3000 PCS Per month |
| Cutter Layout | Symmetrical 4-cutter |
| Thread | R17 |
| Connection Type | Threaded (R19/R22/R25) or tapered shank |
| Model Number | 28R17 |
| Certification | ISO 9001 Certified |
| Brand Name | HLDRILL |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | T/T | Body Material | 42CrMo alloy steel |
| Outer Diameter | 28 mm | Delivery Time | 7-15 Days |
| Flute Type | Spiral / straight | Bit Range | 17-28 mm |
| Carbide Grade | YG8 / YG6 | Packaging Details | Wooden Boxes , Cardboard Boxes |
| Working Air Pressure | 0.5-0.7 MPa | Supply Ability | 3000 PCS Per month |
| Cutter Layout | Symmetrical 4-cutter | Thread | R17 |
| Connection Type | Threaded (R19/R22/R25) or tapered shank | Model Number | 28R17 |
| Certification | ISO 9001 Certified | Brand Name | HLDRILL |
| Place of Origin | CHINA | ||
| High Light | 28mm Rock Bolt Drill Bit ，R17 Thread Anchor Drill Bit ，Tungsten Carbide YG8 Roof Bolting Bit | ||
The Henglong 28R17 anchoring bit is engineered for roof bolting holes in underground coal mine support operations. It delivers reliable tensile strength and abrasion resistance, maintaining stable drilling progress even through tough, hard rock strata.
| Thread | R17 |
|---|---|
| Outer Diameter | 28 mm |
| Tungsten Carbide Grade | YG8 for hard rock; YG6 for medium-hard rock |
| Connection | Threaded (R19 / R22 / R25) or tapered shank |
| Flute Type | Spiral or straight flute for fast cuttings evacuation |
| Working Air Pressure | 0.5–0.7 MPa, matched with pneumatic rock drills |
We supply anchor bits covering 17–28 mm in the R17 series. The symmetrical 4-cutter layout maximizes rock-breaking efficiency and is perfectly suited for medium-hard formations, including sandstone and shale.
Body material: 42CrMo alloy steel, fitted with YG8 / YG11C carbide inserts.
Company Details
Business Type:
Manufacturer,Exporter,Trading Company,Seller,Other
Year Established:
2018
Total Annual:
10000000-30000000
Employee Number:
30~50
Ecer Certification：
Verified Supplier
HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr... HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr...
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