Tungsten Carbide Hardfacing PDC Rock Drill Bit
In demanding drilling environments, every unexpected bit trip costs time, manpower, and profit.
Chenghui’s Tungsten Carbide Hardfacing PDC Rock Drill Bit is engineered specifically for highly abrasive and hard formations where conventional bits fail prematurely. By combining premium thermally stable PDC cutters with Ni-WC plasma arc welded hardfacing protection, this bit dramatically improves wear resistance, gauge retention, and overall drilling efficiency.
If your operations involve geothermal wells, mining exploration, infrastructure foundations, or complex geological drilling — this is the bit built to stay downhole longer.
Why Professionals Choose Chenghui Hardfacing PDC Drill Bits
Outstanding Gauge Protection for Precision Drilling
Gauge wear is one of the most common causes of borehole quality issues. Our strategically applied tungsten carbide hardfacing layer on the gauge area significantly reduces diameter shrinkage. This ensures:- Accurate borehole size
- Reduced need for reaming
- Better wellbore integrity
- Improved directional drilling control
Your hole stays on spec. Your project stays on schedule.
Extended Bit Life in Abrasive and Hard Rock
High-velocity drilling fluid and rock cuttings constantly erode the bit body. Using Plasma Arc Welding (PAW) hardfacing technology, we create a metallurgical bond between tungsten carbide particles and the steel body, forming an ultra-durable protective shield. Benefits include:- Reduced body erosion
- Lower cutter loss risk
- Longer continuous drilling time
- Fewer costly bit trips
More drilling. Less downtime.
Thermally Stable PDC Cutters for Consistent ROP
Our high-grade polycrystalline diamond compact (PDC) cutters maintain cutting sharpness and structural integrity even in interbedded and abrasive formations. You get:- Faster rate of penetration (ROP)
- Stable cutting structure
- Reduced vibration
- Reliable performance under high temperature conditions
Enhanced Steering Stability for Directional & Horizontal Wells
Maintaining bit profile is critical in directional drilling. Chenghui hardfaced PDC bits preserve blade geometry under heavy wear conditions, providing:- Consistent tool face control
- Predictable steering response
- Improved trajectory accuracy
When precision matters, stability matters.
Superior Erosion Resistance in High Flow Systems
High-speed drilling fluid acts like liquid sandpaper. Our tungsten carbide reinforcement protects:- Blade roots
- Hydraulic channels
- Junk slots
- Gauge pads
ISO 9001:2015 Certified Quality
Every bit undergoes strict material inspection, controlled welding thickness, hardfacing uniformity checks, and final product inspection before shipment. Built to perform under real field conditions.Standard Specifications & Custom Options
We provide a full range of API connection PDC drill bits suitable for soft to extremely abrasive formations.
| Diameter (mm) | Diameter (inch) | Connection Type | Blade Count | Recommended Formation |
|---|---|---|---|---|
| 51 | 2″ | API Regular | 3 | Soft to medium |
| 76 | 3″ | API Regular | 3 | Soft to medium |
| 102 | 4″ | API Regular | 3/4 | Soft to medium |
| 127 | 5″ | API Regular | 3/4 | Medium to hard |
| 152 | 6″ | API Regular | 3/4 | Medium to hard |
| 171 | 6 3/4″ | API Regular | 3/4/5 | Medium to hard |
| 191 | 7 1/2″ | API Regular | 3/4/5 | Hard to very hard |
| 216 | 8 1/2″ | API Regular | 4/5/6 | Hard to very hard |
| 244 | 9 5/8″ | API Regular | 4/5/6 | Highly abrasive |
| 311 | 12 1/4″ | API Regular | 4/5/6 | Extremely abrasive |
| 350 | 13 3/4″ | API Regular | 4/5/6 | Extremely abrasive |
- ✔ Non-standard sizes available
- ✔ Custom blade configuration
- ✔ Custom cutter layout
- ✔ Designed according to formation data & drawings
If your project has unique geological challenges, we engineer the solution around your needs.
Typical Applications
🔥 Geothermal Exploration
Designed to withstand high temperature and volcanic abrasive formations.⛏️ Mining Exploration
Ideal for core drilling and blast hole drilling in hard rock mining environments.🏗️ Civil Engineering & Infrastructure
Performs reliably in pile foundation drilling and complex mixed formations.🌍 Geological Exploration
Ensures durable and stable drilling for deep and variable subsurface conditions.Our Factory & Production Line
From raw material to finished product — every step is controlled in our ISO 9001 certified facility.
Manufacturing & Quality Commitment
Quality is not a slogan — it is a controlled process.
- ✓ ISO 9001:2015 compliant production
- ✓ Strict raw material inspection
- ✓ Controlled welding thickness and hardfacing uniformity
- ✓ Final product inspection before shipment
Production & Delivery
Production Model: Made-to-order Standard Lead Time: 15–20 working days (depending on quantity and complexity)During peak seasons, scheduling may extend slightly. If delivery time is critical, please contact our sales team before ordering for confirmation.
Lower Your Cost per Meter — Drill Longer with Chenghui
When evaluating a PDC drill bit, the true metric is not the purchase price — it is the cost per meter drilled.
That’s the Chenghui advantage.
Explore Our Full Range of Drilling Tools
From surface to downhole, we offer a complete lineup of high-performance drill bits and accessories engineered for every formation and application.
PDC Non-Coring Drill Bit
Fast penetration in soft to medium formations without core recovery.
PDC Exploration Core Drill Bit
High core recovery and durability in exploration drilling.
Hot-Pressed Diamond Drill Bit
Ideal for very hard and abrasive rock formations.
Electroplated Diamond Drill Bit
Excellent for non-ferrous materials and precision drilling.
Tricone Rock Drill Bit
Rolling cone bits for a wide range of formations.
Alloy Scraper Drill Bit
Effective in soft and sticky formations.
Pick Cutter Bit
Heavy-duty cutting for mining and trenching.
DTH Hammer
High-frequency impact for deep hole drilling.
Custom Drill Bit
Tailor-made solutions for your specific project.
Drilling Rigs and Accessories
Complete drilling systems and support equipment.
Click any product to learn more and request a quote.
