DTH Drill Bits High Strength Alloy Steel for Deep Hole Drilling

• Customization: Available
• After-sales Service: 6 Months
• Warranty: 6 Months
• Model NO.: LGJ-2025091601
• Certification: ISO 9001:2008
• Standard: BS, GB, DIN
• Surface Treatment: Polishing
• Manufacturing Process: Casting
• Material: Diamond
• Size: Any Size Accepted Customized
• Grade: Customzed
• Surface: Polished or Unground
• Delivery Time: 15days
• Applications: Cutting Tool
• Blank Tolerance: +/-0.05
• Product Name: Cemented Carbide Sheet
• Quality: 100% G Virgin Materials.
• Shiping: DHL, FedEx, TNT, UPS, EMS
• MOQ: 50 Kg
• Transport Package: Carton
• Specification: Customized
• Trademark: Old Craftsman
• Origin: Hunan
• HS Code: 82090090
• Production Capacity: 7000kg/Month
• Package Size: 30.00cm * 30.00cm * 25.00cm
• Package Gross Weight: 10.000kg

Product Description

DTH Drilling Tools

DTH stands for Down-The-Hole drilling, a percussion drilling method widely used in industries like mining, construction, quarrying, water well drilling, geothermal exploration, and oil & gas operations. Unlike traditional top-hammer or rotary drilling, DTH places the hammer (or percussive mechanism) directly behind the drill bit at the bottom of the hole. This design allows for more efficient energy transfer, higher penetration rates in hard rock formations, reduced energy loss, and straighter holes. The system uses compressed air (or sometimes fluid) to power the hammer, which delivers rapid impacts to break the rock while the bit rotates to clear debris.

Key advantages of DTH drilling tools include:

• High efficiency: Optimized air cycles minimize energy consumption and fuel use, leading to lower operational costs.
• Durability: Tools are built with high-quality materials like cemented carbide inserts for wear resistance and extended service life.
• Versatility: Suitable for various hole sizes (from small-diameter micropiles to large blastholes) and tough conditions, including overburden and fractured rock.
• Sustainability: Reduced emissions and fewer tool changes contribute to environmentally friendlier operations.

DTH systems typically consist of:

• Hammers: The core percussive tool that converts compressed air into hammering action.
• Bits: Tungsten carbide-tipped drill bits with specific face designs (e.g., concave for faster penetration, flat for straightness, or convex for stability).
• Rods and Pipes: Drill pipes to transmit air and rotation, often with adapters for compatibility.
• Accessories: Breakout benches, grinding machines, and consumables for maintenance.

How DTH Drilling Works

1. Compressed air is sent down the drill string to the hammer at the hole bottom.
2. The hammer pistons strike the bit shank at high frequency (e.g., 1,000-3,000 blows per minute), fracturing the rock.
3. Air also flushes cuttings (debris) up the hole through flushing holes in the bit.
4. Rotation from the drill rig ensures even wear and directional control.

This method excels in hard rock where other techniques struggle, achieving penetration rates up to 20-30 meters per hour in optimal conditions.

We provide catalogs, custom solutions, and global support.

Tips for Selecting and Using DTH Tools

• Match to Application: Choose bit face designs based on rock type-e.g., ballistic for soft rock, concave for hard/abrasive.
• Maintenance: Regular grinding and inspection extend tool life; use compatible shanks to avoid energy loss.
• Efficiency Boosts: Opt for tools with optimized air flow to reduce compressor needs. In tests, some DTH systems show up to 20-30% lower drilling costs compared to alternatives.
• Safety and Sustainability: Modern tools like those from our factory features for lower emissions and safer operations.

 

Company Profile

Our advantage on carbide brazing products:
1. Full experience in the brazing. We have done thousands of carbide brazing experiments over the past 8 years, obtaining mature experience.
2. Comprehensive quality control. We inspect the quality throughout the whole production line.
3. Fast delivery. We have experienced workers and advanced equipment to ensure the delivery.
4. Excellent after-sales service, We keep in touch with our customers to earn their satisfaction.
 

Packaging & Shipping

 

Q&A

Q: Are you a trading company or manufacturer?
A: We are a factory.

Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 25-35 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples? is it free or extra?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What are your terms of payment?
A: Payment< 1000 USD, 100% in advance. Payment> 1000 USD, 30% T/T in advance, balance before shipment.