ROSCHEN GROUP
| Payment Terms | T/T, L/C, Western Union |
| Supply Ability | 10000 Pieces per Month |
| Delivery Time | 5-7 working days for stock items, 20-30 days for production orders |
| Packaging Details | Plywood case with foam cushioning, export-grade seaworthy packaging with humidity indicator |
| Diameter Range | 64mm - 445mm (2-1/2" - 17-1/2") |
| Shank Types | DHD, COP, QL, SD, Mission, BR, CIR, NUMA |
| Face Design Options | Flat, Concave, Convex, Drop Center |
| Button Shape Options | Spherical, Ballistic, Parabolic, Semi-Ballistic |
| Working Pressure | Low 0.5-0.7 MPa / Medium 1.0-1.5 MPa / High 1.5-3.0 MPa |
| Body Material | Forged Nickel-Alloy Steel |
| Insert Material | Premium Tungsten Carbide (YG8/YG11) |
| Heat Treatment | Case Hardened with Stress Relief Process |
| Brand Name | ROSCHEN |
| Model Number | DTH-FR-64445 |
| Place of Origin | Guangdong, China |
| Certification | ISO 9001:2015 |
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Product Specification
| Payment Terms | T/T, L/C, Western Union | Supply Ability | 10000 Pieces per Month |
| Delivery Time | 5-7 working days for stock items, 20-30 days for production orders | Packaging Details | Plywood case with foam cushioning, export-grade seaworthy packaging with humidity indicator |
| Diameter Range | 64mm - 445mm (2-1/2" - 17-1/2") | Shank Types | DHD, COP, QL, SD, Mission, BR, CIR, NUMA |
| Face Design Options | Flat, Concave, Convex, Drop Center | Button Shape Options | Spherical, Ballistic, Parabolic, Semi-Ballistic |
| Working Pressure | Low 0.5-0.7 MPa / Medium 1.0-1.5 MPa / High 1.5-3.0 MPa | Body Material | Forged Nickel-Alloy Steel |
| Insert Material | Premium Tungsten Carbide (YG8/YG11) | Heat Treatment | Case Hardened with Stress Relief Process |
| Brand Name | ROSCHEN | Model Number | DTH-FR-64445 |
| Place of Origin | Guangdong, China | Certification | ISO 9001:2015 |
| High Light | Full Range DTH Button Bits ，64mm to 445mm Tungsten Carbide ，Complete Diameter Drill Solutions | ||
The ROSCHEN Full Range DTH Button Bits cover the most comprehensive diameter spectrum in down-the-hole drilling, from compact 64mm (2-1/2") bits to large-diameter 445mm (17-1/2") bits. This complete range enables a single-supplier solution for drilling contractors working across diverse projects at every scale.
| Category | Diameter Range | Typical Hammer Series |
|---|---|---|
| Small Diameter | 64mm - 105mm | BR1, BR2, BR3, DHD3.5, COP32 |
| Medium Diameter | 110mm - 165mm | DHD340, DHD350, DHD360, COP44, COP54, COP64, QL40, QL50, QL60, Mission40, Mission60 |
| Large Diameter | 172mm - 254mm | DHD380, COP84, QL80, SD8, Mission80 |
| Extra Large Diameter | 254mm - 445mm | NUMA100, NUMA120, NUMA125, DHD1120, SD12 |
Every bit undergoes CNC machining tolerance inspection, carbide button brazing integrity testing, and dimensional verification against original equipment specifications. ISO 9001:2015 certified manufacturing ensures consistent quality across all diameter ranges.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Seller
Year Established:
1921
Total Annual:
5000-2000000
Employee Number:
100~500
Ecer Certification：
Verified Supplier
ROSCHEN GROUP ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mine... ROSCHEN GROUP ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mine...
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