About Nanjing Dete Machine Tool Co., Ltd.
Nanjing Dete Machine Tool Co., Ltd. is a professional Chinese manufacturer specializing in high-performance shredder machines and industrial cutting knives, located in Nanjing, Jiangsu Province. With years of experience in the recycling machinery industry, we focus on R&D, precision machining and customized production of shredder blades for waste recycling equipment worldwide.
15+
Years Experience
200+
Blade Specifications
50+
Export Countries
1000+
Global Clients
Our Core Products
We produce a complete range of replacement blades and knives for shredding equipment, including:
- Single-shaft shredder blades — for plastic, wood, paper and light scrap
- Twin-shaft shredder blades — for bulky waste, tires and industrial scrap
- Four-shaft shredder blades — for electronic waste and complex materials
- Custom industrial knives — granulator blades, chipper knives and customized cutting tools
Our blades adopt premium raw materials such as SKD11, D2, H13 and 9CrSiMo steel with strict heat treatment, featuring high hardness (HRC 55-62), strong wear resistance and stable toughness, ensuring long service life under heavy-duty working conditions.
Application Industries
Dete shredder blades are widely used in:
- Plastic recycling and granulation
- Tire and rubber shredding
- Metal scrap processing (aluminum, copper, steel)
- E-waste and WEEE recycling
- Wood and biomass processing
- Municipal solid waste (MSW) treatment
Our Advantages
Competitive Advantage
Factory-direct pricing with reliable performance. We eliminate middle layers to provide cost-effective blade solutions without compromising quality. Stable supply chain and flexible production capacity ensure on-time delivery for both small and bulk orders.
Precision Machining
Advanced CNC machining centers, vacuum heat treatment furnaces and precision grinding equipment ensure tight tolerances and consistent blade geometry. Every blade goes through strict dimensional inspection before delivery.
Major Equipment
Our production line includes CNC lathes, machining centers, vacuum heat treatment furnaces, surface grinders and hardness testers. These equipment guarantee stable quality for both standard and custom blades.
Quality Assurance
Strict quality control system covers raw material inspection, in-process control and final testing. Hardness testing (HRC), ultrasonic flaw detection and dimensional measurement ensure every blade meets international standards.
Why Choose Dete
- OEM & ODM service — custom sizes per client drawings and samples
- Advanced manufacturing — CNC machining, vacuum heat treatment and precision grinding
- Quality assurance — strict hardness testing and dimensional inspection
- Global technical support — fast response and after-sales service for overseas clients
- Cost-effective solutions — factory-direct pricing with reliable performance
Global Market & Cooperation
Our products are exported to Southeast Asia, Europe, North America, South America and Africa, serving shredder manufacturers, recycling plant operators and trading companies. With rich experience in recycling machinery matching, we provide professional blade solutions for customers worldwide.
We sincerely welcome worldwide partners for long-term win-win cooperation. For inquiries, technical consultation or OEM orders, please contact us directly.
Blade Materials & Heat Treatment
The performance of a shredder blade depends heavily on material selection and heat treatment. Dete offers multiple steel grades to match different working conditions and budget requirements:
SKD11 D3
HRC 58-62High-carbon high-chromium tool steel. Excellent wear resistance for plastic and rubber shredding.
D2
HRC 58-61Air-hardening cold-work tool steel. Balanced toughness and abrasion resistance for general waste.
H13
HRC 48-52Hot-work tool steel. High thermal fatigue resistance for tire and high-temperature shredding.
9CrSi
HRC 54-58Low-alloy tool steel. Economical choice for light-duty applications.
Hardfacing
Carbide tippedTungsten carbide tipped or welded. Extended service life for abrasive materials like fiberglass and e-waste.
Our vacuum heat treatment ensures uniform hardness throughout the blade body, avoiding edge chipping and premature failure. Surface treatments such as nitriding and PVD coating are available for special applications.
Custom Blade Manufacturing Process
As an OEM shredder blade manufacturer, Dete follows a standardized custom production workflow to ensure accuracy and fast turnaround:
-
01
Drawing & Sample Review
Confirm dimensions, material, hardness, quantity and tolerance requirements.
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02
Material Procurement
Source certified round bar or plate from verified steel mills.
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03
Rough Machining
CNC turning and milling to near-net shape.
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04
Heat Treatment
Vacuum quenching and tempering to target hardness.
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05
Precision Grinding
Surface and profile grinding to final dimensions.
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06
Quality Inspection
Hardness test, dimensional check and visual inspection.
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07
Packaging & Shipping
Anti-rust packaging and export-grade wooden cases.
Typical lead time is 15-30 days depending on blade complexity and order quantity. Sample orders are accepted for testing before mass production.
Frequently Asked Questions
What types of shredder blades do you supply?
We supply single-shaft, twin-shaft and four-shaft shredder blades, as well as granulator knives, chipper knives and custom industrial cutting tools. Blades can be customized per your drawings or samples.
Which materials are available for shredder blades?
Common materials include SKD11, D2, H13, 9CrSi and 6CrW2Si. We also offer tungsten carbide tipped and hardfacing blades for highly abrasive applications such as e-waste and fiberglass recycling.
What is the expected service life of Dete shredder blades?
Service life depends on material, hardness, waste type and machine speed. Under normal conditions, our SKD11 and D2 blades typically last 30-50% longer than standard market blades due to strict heat treatment and precision grinding.
Do you accept OEM and custom orders?
Yes. We manufacture blades according to client drawings, samples or even worn-out original blades. Minimum order quantity is flexible, and sample orders are welcome for testing.
How long is the production lead time?
Standard blades in stock can be shipped within 7 days. Custom orders usually take 15-30 days depending on complexity and quantity. Urgent orders can be expedited upon request.
Which countries do you export to?
We export to over 50 countries including the United States, Germany, Italy, UK, Turkey, India, Vietnam, Brazil, Mexico, South Africa and more. We have experience with international shipping and customs documentation.
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Looking for reliable shredder blade supplier? Contact Nanjing Dete Machine Tool today for free consultation, OEM quotation and technical support.