DTH Drill Bits with QL Spline Shank 85-381mm for Mining and Water Well Drilling Applications
Price:
99-9999USD/PC
MOQ:
5PCS
Delivery Time:
3-4WEEKS
Brand:
MING
Product Description
Professional DTH Drill Bits with QL Spline Shank
KINGDRILLING manufactures high-performance Down-The-Hole (DTH) drill bits with QL shank type, designed for optimal performance across various rock formations in water well, mining, and construction applications.
Product Specifications
Available Shank Types
QL30, QL40, QL50, QL60, QL80, QL10, QL12
Hole Diameter Range
3" to 12" (85mm to 381mm)
Technical Specifications
| Model | Bit Dia. (mm) | Button Configuration | Air Holes | Weight (KG) |
|---|---|---|---|---|
| MDQL30-85 | 85 | 6×Φ13 | 4×Φ12 | 4.5 |
| MDQL30-90 | 90 | 6×Φ14 | 4×Φ12 | 4.7 |
| MDQL30-95 | 95 | 6×Φ14 | 4×Φ13 | 4.9 |
| MDQL30-100 | 100 | 6×Φ14 | 5×Φ12 | 5.0 |
| MDQL30-105 | 105 | 6×Φ14 | 5×Φ13 | 5.5 |
| MDQL40-105 | 105 | 6×Φ14 | 5×Φ13 | 9.0 |
| MDQL40-110 | 110 | 7×Φ14 | 6×Φ13 | 9.2 |
| MDQL40-115 | 115 | 7×Φ14 | 6×Φ13 | 9.5 |
| MDQL40-120 | 120 | 8×Φ14 | 7×Φ13 | 10.3 |
| MDQL40-127 | 127 | 8×Φ14 | 7×Φ13 | 11.5 |
| MDQL50-135 | 135 | 7×Φ18 | 6×Φ14 | 15.5 |
| MDQL50-140 | 140 | 7×Φ18 | 7×Φ14 | 16.0 |
| MDQL50-146 | 146 | 7×Φ18 | 7×Φ14 | 16.5 |
| MDQL50-152 | 152 | 8×Φ18 | 8×Φ14 | 17.0 |
| MDQL50-165 | 165 | 8×Φ18 | 8×Φ16 | 18.0 |
DTH Bit Face Design Selection Guide
Choose the optimal face design based on your specific geological conditions:
- Concave Face: Ideal for all formations, especially deep well drilling with excellent borehole perpendicularity
- Convex Face: Best for moderate hardness strata with good drilling efficiency and acceptable perpendicularity
- Flat Face: Recommended for extremely hard formations, fractured rock, and complex geological conditions with superior borehole stability
Quality & Manufacturing Advantages
- Premium materials: TIMKEN steel and German Element Six tungsten carbide (YK05, T6)
- Advanced electron-hydraulic forging technology
- State-of-the-art heat treatment with multipurpose furnace systems
- Comprehensive molding department with extensive tooling capabilities
- Professional R&D team and rigorous quality control systems
Customization Options
We offer custom design and manufacturing services for:
- Various diameters and hole configurations
- Multiple carbide button shapes and face designs
- Tailored solutions for specific customer requirements
Order Format: Shank Type + Head Diameter + Face Design + Button Shape
Ordering & Delivery Information
Production Timeline
- Stock items: 3-5 days delivery
- DTH Bits production: 15 days
- DTH Hammer production: 30 days
Shipping Methods
- Samples: DHL/UPS/TNT/FEDEX or air freight
- Bulk orders: Air or sea freight
Payment Options
- T/T (Telegraphic Transfer)
- Western Union
- L/C at sight
Comprehensive Service Support
Pre-Sale Services
Technical consultation, model selection assistance, and custom design solutions
During Sale Services
Solution planning and pre-delivery product inspection
After-Sale Support
- 24-hour response time (excluding holidays)
- Round-the-clock technical support
- Free replacement for confirmed quality-related failures
Company Profile
Established in 2005, Kingdrilling Machinery Co., Ltd. is located in Wuhan East Lake High-tech Development Zone, specializing in research and production of casing drilling systems, DTH hammers, drill bits, and related mining tools.
Product Applications
Water well drilling, mining operations, construction projects, and various industrial applications requiring efficient rock penetration.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Wuhan Kingdrilling Diamond Co.,Ltd
Location
1-2-905 California Sunshine, Optical Valley Street,Wuhan 430074, China
Contact Person
Wendy Chen