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coarse sand blasting media
rapidly removing heavy rust, thick mill scale, stubborn old coatings and massive welding slag, ideal for
heavy blasting of large workpieces.
High Surface Texturing Effect: It forms a deeply roughened surface, significantly enhancing the
bonding force of anti-corrosion paint, thick coating and thermal spray coatings.
High Working Coverage Efficiency: Each abrasive particle covers a larger area, suitable for mass
cleaning of large steel structures, ship components and pressure vessels to shorten processing time.
Flexible Matching Options: Coarse-grade steel grit, steel shot and stainless steel abrasives are available.
Compatible with blasting booths, pressure blast machines and large shot blasting equipment for
flexible material selection.
- Product Description
Coarse Sand Blasting Media – Heavy‑Duty Abrasive Solutions for Industrial Surface Treatment
Botou Junda Machinery Co., Ltd. manufactures industrial‑grade coarse sand blasting media, engineered for high‑intensity surface treatment across demanding industries. Backed by a 3,000‑square‑meter production plant and over 20 years of foundry‑machinery expertise, we supply abrasives designed for deep anchor profile formation, scale removal and heavy‑rust cleaning. Our products features a bulk density of minimum 7.6 g/cm³, hardness ranging from 400 to 750 HV, and particle sizes from 3.0 mm to 8.0 mm. These specifications enable fast removal of thick coatings over 15 mils while achieving surface roughness profiles of 3.0‑5.0+ mils, which are essential for high‑performance coating adhesion in marine, infrastructure and oil‑and‑gas applications.
What Makes Our coarse sand blasting media Stand Out
Our abrasives deliver powerful kinetic‑energy transfer by combining large‑particle geometry with adjustable hardness levels. During operation, the angular structure minimizes breakage rates while optimizing substrate penetration.
To guarantee consistent performance, every batch goes through thorough quality‑assurance procedures, including conductivity testing and sieve analysis. Your workpieces receive uniform treatment without contamination risks that could compromise coating systems.
Technical Specifications for coarse sand blasting media
| Item | Value |
|---|---|
| Product Series | Coarse Sand Blasting Media |
| Material Type | Carbon Steel / Stainless Steel / Alloy Steel |
| Particle Size | 3.0 mm‑8.0 mm (customizable) |
| Hardness | 400‑750 HV |
| Bulk Density | ≥7.6 g/cm³ |
| Structural Features | Large particle size, strong impact force, excellent stripping performance |
| Wear Resistance | High performance with low breakage rate |
| Service Life | Extended durability for long‑term operation |
Performance Advantages You Can Measure
Powerful Impact Force for Aggressive Cleaning
Large particle sizes generate strong kinetic energy to rapidly eliminate heavy rust layers, thick scale and stubborn aged coatings. This makes our coarse sand blasting media ideal for blasting large steel structures and heavy‑duty castings.
Superior Surface Texture
Your substrate is deeply roughened to significantly boost bonding strength for anti‑corrosion paints, thermal‑spray coatings and heavy‑duty protective linings. Such profile depth is critical where coating failure cannot be tolerated.
Improved Coverage Efficiency
Each abrasive grain covers a larger surface area compared with fine‑grade media. This feature shortens processing time when treating large steel structures, ship components and pressure vessels in high‑volume production environments.
Flexible Material Options
We offer coarse‑grade steel grit, steel shot and stainless‑steel abrasive options. Our media is compatible with blast rooms, pressure blast machines and large shot‑blasting equipment, giving you flexibility for system integration.
Where Our Abrasive Media Performs Best
Marine & Shipbuilding Operations
Dry‑dock facilities use our media to remove anti‑fouling coatings and heavy biological growth from ship hulls. Deep‑etched surface profiles ensure proper adhesion of epoxy primers in salt‑laden environments.
Heavy‑Duty Infrastructure Rehabilitation
Bridge repair and water‑tank refurbishment projects require removal of lead‑based paint and heavy rust deposits on structural steel. Our abrasives deliver the necessary substrate preparation for long‑lasting protective systems.
Oil & Gas Pipeline Preparation
Internal and external coating preparation for large‑diameter pipelines demands the surface “tooth” provided by coarse sand blasting media. Such profiles enable fusion‑bonded epoxy (FBE) coatings to withstand extreme underground pressure and thermal cycling.
Surface Treatment for Large‑Size Castings
Foundries processing heavy‑duty castings benefit from fast contaminant removal and profile creation delivered by our media prior to final finishing operations.
Frequently Asked Questions
Q: What scenarios are suitable for coarse sand media?
A: Our media is perfect for removing heavy deposits, severe rust and thick aged coatings. It is widely used for steel structures, large castings, ship components and more. The abrasive quickly strips stubborn contaminants and produces substrates with high surface roughness to meet demanding coating‑application requirements.
Q: What characteristics do coarse abrasives have compared with fine abrasives?
A: Greater impact kinetic energy brings higher cleaning efficiency and deeper surface texture. However, it produces a relatively rough surface finish and higher abrasive consumption. It is not recommended for thin‑walled or precision workpieces where material deformation is a concern.
Q: What points should be noted when selecting media?
A: Adjust blasting pressure to avoid excessive workpiece deformation and surface impact damage. Ensure full abrasive recovery and adopt wear‑resistant hoses and liners. We do not recommend using this media for surface preparation right before precision finishing operations.
Q: How do I choose between coarse steel shot and coarse steel grit?
A: Select coarse steel grit for fast rust removal and high surface roughness. If you require cleaning and surface peening with less impact damage while removing contaminants, coarse spherical steel shot is the preferred option.
Q: Can your media be recycled within blasting systems?
A: Yes. Featuring a low breakage rate, our material supports multiple recycling cycles. The exact cycle count depends on your equipment type and operating parameters, though typical installations achieve 3‑7 cycles before media replacement is needed.
Why Partner With Junda Machinery
Our 20 years of industry experience translates to reliable product performance and technical support throughout the full equipment lifecycle. We maintain sufficient stock for fast delivery, while custom specifications are normally produced within 15 days.
Our professional team replies to inquiries within 6‑8 hours to keep your project schedule on track. We supply comprehensive technical documents, operation manuals and troubleshooting support.
Quality certifications including ISO9001, ISO14001 and ISO45001 demonstrate our commitment to manufacturing standards that satisfy international compliance requirements.
Get Your Surface‑Treatment Solution Today
Ready to boost blasting efficiency with industrial‑grade coarse sand blasting media? Contact our technical team via junda001@jundablast.com for product specifications tailored to your exact requirements, custom‑formula options and application guidelines.
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