




LONGGUANG currently has more than 3,000 industrial brush products, covering all industries such as auto parts, mechanical parts, hydraulic parts, etc. Our products are widely used in the polishing, de-rusting, and deburring of metal parts processing; metal sheet, strip cleaning, grinding, descaling; finishing of textile, printing, and dyeing leather products, sanding; dust removal, grinding and coating of paper and artificial boards Glue; cleaning, polishing, deburring of circuit boards; cleaning of glass and LCD substrates; cleaning and descaling of pipes; sealing and dust proofing of furniture, storage, and machinery.
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Product Name:
Heavy-Duty Twisted Knot Plate Brush
Product Size:
Customizable according to customer requirements
Refference Drawing:

Standard Series:
| Dia A | Trim l. C | Thread B | Cup D. D | Bundle Count | RPM(max) | Part No. | |
| Ф0.35 Steel | Ф0.5 Steel | ||||||
| 100(4") | 20 | M14*2 | 60 | 18 | 12500 | PN3520100 | PN5020100 |
| 115(4.5") | 25 | M14*2 | 60 | 18 | 10000 | PN3525115 | PN5025115 |
| 125(5") | 25 | M14*2 | 75 | 24 | 10000 | PN3525125 | PN5025125 |
Material Composition:
Filament Material: Precision-twisted bundles of high-tensile steel wire
Backing/Plate Material: Heavy-gauge solid steel plate (heat sink design)
Product Features:
Maximum knot density – flat plate design allows more twisted knots per surface area than standard wheel brushes, resulting in faster cleaning cycles and more uniform finish
Heavy-gauge steel core – solid steel plate acts as robust anchor and heat sink, preventing tool warping under continuous, high-friction industrial use
Aggressive impact force – rigid, twisted knots are designed to "strike" the surface rather than wipe, effectively fracturing thick rust, mill scale, and hardened concrete laitance
Precision dynamic balance – every plate brush is balanced to minimize machine vibration, protecting equipment spindles and bearings while ensuring operator safety and comfort
Zero knot loss – precision-anchored twisted bundles ensure no knot loss during aggressive operation
High deburring efficiency – maximum material removal on large-scale surfaces
Long service life – heavy-duty construction withstands most demanding industrial applications
Applicable Scenarios:
Large-scale steel fabrication – rapidly descaling large steel plates and structural H-beams prior to welding or coating
Shipyard & marine decks – stripping multi-layer marine paint, heavy oxidation, and non-skid coatings from ship decks and hulls
Infrastructure & construction – deep cleaning and profiling of large concrete surfaces, removing old epoxy or industrial coatings
Heavy machinery maintenance – restoring large-scale industrial components and castings in foundries and mining operations
Metal rust & oxide scale removal – aggressive removal of thick rust and mill scale from large metal surfaces
Rapid oxide scale removal – fracturing hardened deposits on steel structures
What Makes Twisted Knot Plate Brushes Different?
Our Twisted Knot Plate Brushes are the powerhouse of industrial surface rehabilitation. Engineered for the most aggressive, high-pressure applications, these brushes feature precision-twisted bundles of high-tensile steel wire, securely anchored to a heavy-gauge solid steel plate. This design ensures zero knot loss and maximum impact delivery, even when stripping the most stubborn contaminants from expansive surfaces.
Unlike standard wheel brushes that have limited working surface area, our plate brush design maximizes knot density across a larger surface, significantly reducing cleaning cycle times while delivering a more uniform finish across large components.
Twisted Knot Plate Brush vs. Standard Wheel Brush
| Feature | Twisted Knot Plate Brush (This Product) | Standard Wheel Brush |
|---|---|---|
| Knot density | Maximum (flat plate design) | Limited (radial design) |
| Surface contact area | Large – ideal for expansive surfaces | Limited – best for edges and contours |
| Heat dissipation | Excellent (steel core as heat sink) | Moderate |
| Warping resistance | High (heavy-gauge steel plate) | Low to moderate |
| Best for | Large flat surfaces, heavy scale removal | Contoured parts, general cleaning |
| Impact force | Aggressive (striking action) | Moderate (wiping action) |
Key Applications in Detail
Large-Scale Steel Fabrication
Prior to welding or coating, large steel plates and structural H-beams must be free of mill scale, rust, and contaminants. Our twisted knot plate brush rapidly descales expansive surfaces, significantly reducing preparation time compared to standard brushes or manual methods.
Shipyard & Marine Deck Maintenance
Marine environments create multi-layer paint systems, heavy oxidation, and non-skid coatings that are notoriously difficult to remove. The aggressive impact force of our twisted knot plate brush strips these stubborn layers efficiently, preparing ship decks and hulls for recoating or repair.
Infrastructure & Concrete Surface Preparation
For deep cleaning and profiling of large concrete surfaces – removing old epoxy, industrial coatings, or concrete laitance – our plate brush delivers the aggressive action required. The rigid twisted knots fracture hardened deposits without excessive wear.
Heavy Machinery & Foundry Restoration
Foundries and mining operations require restoration of large-scale industrial components and castings. Our plate brush handles the most demanding scale removal and surface preparation tasks, extending equipment service life.
For Applications Requiring Different Configurations
For aggressive cleaning on contoured or irregular surfaces, consider our Twisted Knot Cup Brush for heavy-duty cup-style action.
For wheel-style aggressive cleaning, see our Twist Knot Wheel Brush and Steel Wire Wheel Brush.
For general-purpose surface cleaning where lighter action is acceptable, our Steel Wire Cup Brush (Crimped Wire Type) offers flexible, conformable cleaning.
Related Products You May Need:
For heavy-duty cup-style aggressive cleaning, see Twisted Knot Cup Brush
For wheel-style aggressive applications, explore Twist Knot Wheel Brush
For flat surface general cleaning, check Steel Wire Wheel Brush
Browse the full Cup Brush Series
Explore the complete Wheel Brush Series
Why Choose Twisted Knot Plate Brushes for Large-Scale Operations?
In large-scale industrial surface preparation, time is money. Our twisted knot plate brush delivers:
Faster cleaning cycles – maximum knot density covers more surface area per pass
Lower operating costs – reduced labor hours and longer tool life
Superior finish uniformity – consistent surface preparation across large components
Equipment protection – precision dynamic balance minimizes vibration and wear on your machinery
Operator safety – zero knot loss design prevents projectile hazards
Customization Available
We offer custom plate dimensions, knot configurations, wire materials (high-carbon or stainless steel), and arbor mounting options to match your specific large-scale surface preparation requirements. Contact us for technical recommendations and custom engineering support.

Q1: What is the main difference between a Plate Brush and a Cup Brush?
A: It's all about coverage and machine type. A Cup Brush is typically used with handheld angle grinders for localized cleaning. A Plate Brush is designed for larger diameters and is often used on stationary machines, floor grinders, or automated production lines to cover vast surface areas much faster.
Q2: Can these brushes be customized for specific machine spindles?
A: Yes. We can customize the center hole (bore) size, bolt-hole patterns, and arbor threads to ensure a perfect fit for your specific industrial equipment or automated deburring machine.
Q3: How do I choose between Carbon Steel and Stainless Steel knots?
A: Carbon Steel is the standard for heavy rust and scale on iron and steel plates. Stainless Steel (INOX) is essential when working on stainless steel or aluminum surfaces to prevent "cross-contamination" and ensure the workpiece remains corrosion-resistant.
Q4: What is the recommended RPM for a Plate Brush?
A: Because of their larger diameter and weight, Plate Brushes typically operate at lower RPMs than small end brushes. Always check the Maximum RPM stamped on the steel plate. Operating at the optimal speed ensures the best cutting action and prevents premature wire fatigue.
Q5: Are these brushes suitable for wet applications?
A: Yes, especially our Stainless Steel versions. They are frequently used in wet environments to clean large castings or plates where coolants or water are used to suppress dust and manage heat.
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