JOINT CARBIDE
Quality

QUALITY WITHOUT COMPROMISE

19+ years of precision manufacturing, rigorous testing protocols, and end-to-end supply chain control -- delivering carbide products that meet the most demanding industrial standards worldwide.

Superior Hardness
HRA 90.3-91.5
Among the highest in the global carbide industry
Experience
19+
Years of Excellence
CNC Machines
418
5-Axis Precision
Daily Output
30K+
Burrs Per Day
Industries
20+
Global Markets
Three No.1 Achievements

TWO GLOBAL · ONE NATIONAL

#1
WORLD'S FIRST
Full Industrial Chain Closed Loop

First enterprise globally to realize a complete industrial chain closed loop for rotary burrs -- delivering a pricing advantage unmatched in the market.

Global Achievement
#1
WORLD'S LARGEST
Production Capacity

Largest producer of rotary burrs by production capacity worldwide -- 418 CNC machines, 30,000+ pcs/day, with plans to reach 1,000 machines and 50,000+ pcs/day by 2027.

Global Achievement
#1
CHINA'S TOP
Rotary Burr Quality

China's top enterprise in rotary burr quality -- HRA 90.3-91.5 hardness, 100% pure WC raw material, and self-developed 5-axis CNC machines delivering standardized tooth profiles.

National Achievement
Core Standards

FOUR PILLARS OF QUALITY

Every product leaving our facilities is built on four non-negotiable quality commitments.

SUPERIOR HARDNESS

Achieves HRA 90.3-91.5 -- among the highest in the industry -- delivering outstanding wear resistance and extended service life under extreme conditions.

HRA 91.5
HIGH PRECISION

Fine-finished surfaces with optimized chip removal geometry. 5-axis CNC machining ensures dimensional accuracy and consistent performance across every batch.

5-AXIS
EXTENDED LIFE

Premium 100% pure tungsten carbide raw materials and precision silver brazing at 700°C -- far lower than copper brazing -- preserving alloy quality and eliminating fracture problems.

700°C
RELIABLE PERFORMANCE

Excellent structural stability and lasting durability for heavy-duty industrial applications. Consistent batch-to-batch performance trusted by 20+ industries globally.

20+ IND
Process Control

MANUFACTURING
PROCESS

Every carbide burr is produced through a rigorous 6-step in-house process -- zero outsourcing, total quality control from raw material to finished tool.

6
Process Steps
01
WET GRINDING

Precision wet grinding of tungsten carbide raw materials to achieve uniform particle distribution.

02
PRESSING

High-pressure compaction of carbide powder into precise blank shapes using industrial presses.

03
SINTERING

High-temperature vacuum sintering bonds carbide particles into dense, ultra-hard blanks with maximum strength.

04
FLUTING

5-axis CNC precision fluting creates optimized cutting geometry for superior chip evacuation and surface finish.

05
TESTING

Multi-point quality inspection covering hardness, dimensional accuracy, surface finish and structural integrity.

06
SHIPPING

Secure packaging and global logistics with full traceability -- ensuring products arrive in perfect condition.

CHINA'S FIRST
Complete in-house material supply chain -- from raw WC powder to finished carbide burr. Zero outsourcing. Total quality ownership.
418
CNC Machines
30K+
Daily Output
3
Factories
Inspection Protocols

TESTING & INSPECTION

Advanced instrumentation and systematic testing protocols ensure every product meets specification before leaving our facilities.

CARBIDE BURRS
Quality Inspection Protocol
1
Hardness Testing
Rockwell hardness verification to confirm HRA 90.3-91.5 specification on every production batch.
2
Dimensional Accuracy
CMM and optical measurement of shank diameter, head geometry, and overall length tolerances.
3
Weld Integrity Check
Visual and mechanical inspection of 50% silver sandwich solder joints for void-free bonding and pull strength.
4
Surface Finish Verification
Surface roughness measurement to confirm optimized chip removal geometry and edge sharpness.
THERMAL SPRAY POWDER
Multi-Stage QC Protocol
1
Flow Rate Testing
Hall Flowmeter measures loose density and powder flow rate to ensure consistent spray performance.
2
Particle Size Analysis
Laser particle size detector and punch screening verify granularity distribution within specification.
3
Carbon & Sulphur Detection
High-frequency infrared carbon-sulphur analyzer confirms elemental composition accuracy.
4
Rare Metal Spectrometry
Spectrometer analysis detects Chromium, Cobalt, Oxygen and other rare metal contents to exact tolerances.
HOLE FLOW METER
Loose assembly & flow rate measurement for thermal spray powders
PUNCH SCREENING
Granularity screening by particle size classification
LASER DETECTOR
Laser granularity detection system for precise size analysis
SPECTROMETER
Rare metal content analysis: Chromium, Cobalt, Oxygen
Product Lines

QUALITY ACROSS ALL PRODUCTS

The same commitment to material purity, precision engineering and rigorous testing applied across every product category.

Flagship Product

CARBIDE
BURRS

The core product. 19+ years of refinement, 418 CNC machines, full in-house supply chain from raw WC to finished tool.

Hardness Spec
HRA 90.3-91.5
Rockwell A Scale · Batch Verified
100% Pure WC Raw Material
Direct-source manufacturer, no substitution
50% Silver Sandwich Solder
Flat-bottom solid weld, gap-free bonding at 700°C
R-Shape Shank Design
40Cr steel, HRC 45±2, enlarged welding area
5-Axis CNC Precision
418 self-developed machines, standardized tooth profiles
Anti-Rust Steel Shank
Lowers after-sales risk, convenient for inventory storage
Professional Edge Honing
Exceptional sharpness and long-lasting durability
Available Cut Types
Double Cut (MX) Single Cut (M) Aluminium Cut (W) Coarse Cut (C) Fine Cut (F) Diamond Cut (D) Chip Breaker (MR) Steel Cut (SX) INOX Cut
Foundation Material

CARBIDE
BLANKS

The bedrock of the Joint Carbide supply chain. Established in 2007, our carbide blank R&D underpins every downstream product we manufacture.

Material Grade
HRA 90.3-91.5
Pure WC · Stable & Controllable Quality
Domestic WC Raw Material
Stable and controllable quality sourced directly from trusted domestic suppliers
Full In-House Process
Wet grinding → pressing → sintering -- every step controlled in-house
Precision Dimensional Tolerance
Tight geometry and concentricity standards for direct downstream machining
Pricing Advantage
World's first full industrial chain closed loop for rotary burrs -- lowest cost at equivalent quality
Custom Grades Available
Tailored WC-Co compositions and geometries to match specific application demands
Batch Testing & QC
Every batch tested for hardness, density and grain size before shipment
Manufacturing Steps
01 Wet Grinding 02 Pressing 03 Sintering 04 Inspection 05 Packaging
Carbide Burr Blanks Tool Manufacturers OEM Supply Custom Shapes
Advanced Surface Engineering

HARDFACING MATERIAL

Thermal spray powders and cladding & hardfacing powders engineered for anti-wear, anti-corrosion and high-temperature resistant surface coatings across the most demanding industrial applications.

Thermal Spray Powder
WC-Based
Wear resistant
WC-Ni-Based
Corrosion resistant
Cr₃C₂-Based
High-temp
Cladding & Hardfacing Powder
WC/Ni-Based
Anti-wear
Nickel-Based
High-temp
TiC / TiC-CrFe
Surface strengthening
6
Product
Types
20+
Industries
Served
ISO
Certified
Process
Verified Excellence

CERTIFICATIONS & STANDARDS

Our quality management systems and product standards are independently verified to give customers confidence in every order.

ISO 9001
Quality Management

Certified quality management system covering design, production, testing and delivery processes.

HRA SPEC
Hardness Verified

Every batch verified against HRA 90.3-91.5 specification using calibrated Rockwell hardness testing equipment.

GLOBAL
Export Standards

Products meet international export standards for 20+ industries across North America, Europe, Asia-Pacific and beyond.

19+ YEARS
Track Record

Over 19 years of consistent quality delivery to global customers -- our reputation is our most important certification.

Quality Assurance Flow

END-TO-END QUALITY CONTROL

1
Raw Material
100% pure WC sourced and verified on arrival. Domestic supply chain for stable, controllable quality.
2
In-Process
Stage-by-stage checks at each manufacturing step. Self-developed CNC machines ensure standardized profiles.
3
Final Inspection
Multi-instrument finished product verification before packaging and global shipment.
Hardness Verification
Dimensional Inspection
Elemental Analysis
Structural Integrity
Usage Guidelines

RECOMMENDED
SAFE USE

Follow these guidelines to maximize carbide burr performance, safety and service life.

7
Guidelines
Select Correct Speed
Always choose the appropriate rotational speed for the material being machined before starting the grinder.
Match Burr to Material
Choose the appropriate burr shape, diameter and cut type for the specific material being processed.
Secure Shank Connection
Confirm that the burr shank and chuck of the die grinder are firmly connected before operation.
Avoid Excessive Pressure
Do not apply too much pressure during grinding. Excessive heat shortens burr lifespan significantly.
No Combustible Environments
Never use carbide burrs in environments containing combustible gas or flammable materials.
Wear Protective Equipment
Always wear safety glasses and protective gloves before grinding. Personal protection is mandatory.
Slow Down When Stuck
If the burr becomes stuck in the material, slow down or stop the machine immediately before attempting to free it. Forcing the tool may cause fracture or injury.
Get in Touch

QUALITY YOU CAN
TRUST. EVERY TIME.

Request product specifications, quality certificates, or a sample order. Our technical team is ready to support your sourcing needs.

HRA 90.3-91.5
Hardness Guaranteed
19+
Years Experience
418
CNC Machines
20+
Industries Served