GL 25 Steel Grit is a medium-hardness cast steel abrasive manufactured by Shengxiang Guanghe Metal Products Co., Ltd. using high-quality high-carbon steels raw materials and precisely controlled quenching and tempering processes. It achieves a perfect balance between toughness and hardness, enabling effective surface cleaning while possessing good fatigue resistance. GL 25 is the ideal choice for processing carbon steel structures, castings cleaning, and general preparatory work before coating, especially suitable for users seeking a more cost-effective solution than premium steel grits while significantly outperforming quartz sand.
Excellent Cost-Effectiveness
GL 25 offers satisfactory cleaning speed and a sufficiently long service life while maintaining a highly competitive price. It helps you easily upgrade from traditional abrasives to recyclable metallic grit within budget, significantly reducing the cost per treatment.
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Its moderate hardness (approx. HRC 57) ensures it effectively breaks down scale upon impact without excessively embedding into the substrate or fracturing too quickly. This provides a clean and suitably profiled surface for coatings, ensuring good adhesion.
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GL 25 is compatible with most common blasting equipment, including pressure blasters, many efficient wheel blast machines, and vacuum recovery systems. This makes it a smooth transition choice during workshop upgrades or equipment retrofits.
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As a manufactured abrasive, it fundamentally avoids the silicosis risk associated with quartz sand. It generates far less dust than mineral sands, helping maintain a cleaner production area and complying with increasingly stringent modern factory requirements for occupational health and safety.
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| 53 - 60HRC (Rockwell Hardness) | |
| US Mesh 25 (Custom sizes 16-40 Mesh available on request) | |
| Sub-Angular | |
| >=7.4g/cm³ | |
| Carbon (C): 0.85-1.2%, Manganese (Mn): 0.6-1.2%, Silicon (Si): 0.5-1.2%, Sulfur (S) & Phosphorus (P): < 0.04% | |
| Approx. 2300-2500 Cycles (in standard wheel blast equipment) |
Suitable for derusting and surface preparation on factory frameworks, warehouse shelving, conveyor supports, etc.
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Efficiently removes molding sand, scale from castings, and oxide layers formed after heat treatment, revealing the base metal.
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Used for surface cleaning of various pipelines and pressure vessels before anti-corrosion coating or insulation.
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Surface cleaning of old machinery, vehicle chassis, etc., during refurbishment, in preparation for repainting.
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In certain applications, can also be used for stone bush-hammering and lettering, creating unique surface effects.
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In-Depth Guide
GL 25: Bridging Economy and Performance
In the spectrum of abrasive choices, one end features low-cost, single-use, high-dust mineral sands, while the other end features high-performance, high-initial-cost premium steel grits (like GH 40). GL 25 is strategically positioned to fill the gap between these two extremes.
For many small and medium-sized manufacturing enterprises, maintenance workshops, or budget-conscious large projects, GL 25 provides a "just right" solution. It embodies the core advantages of metallic abrasives – recyclability, high efficiency, and better environmental profile – while its moderate hardness reduces wear rates on equipment (especially wheels and liners), indirectly extending maintenance intervals. Through optimized production processes, Shengxiang Guanghe ensures that GL 25 maintains excellent microstructural consistency and particle uniformity at an accessible price point, avoiding performance fluctuations.
Field Operation Tips to Maximize GL 25 Value
Recommended operating pressure is 0.5 - 0.7 MPa. For softer substrates or thin rust layers, reduce pressure slightly and adjust the blasting angle to avoid unnecessary substrate removal.
An efficient magnetic or air separator is crucial. Promptly removing fractured fines from the recycling system ensures consistent blasting efficiency and surface treatment quality.
Consider mixing a proportion of used grit when initially charging or topping up the system. This mixture can sometimes yield a more uniform surface texture and further optimize costs.
This factory had long used quartz sand for cleaning small steel castings, plagued by dust issues and waste disposal costs. Upon recommendation from Shengxiang Guanghe's technical team, they piloted GL 25 Steel Grit on one production line. After one month of operation, the abrasive cost per piece decreased by 40%. More importantly, workshop air quality improved fundamentally, with excellent feedback from workers. The plant manager stated: "GL 25 allowed us to achieve a dual upgrade in both production environment and efficiency with minimal investment. The product and service from Shengxiang Guanghe exceeded our expectations."
Q: What is the main difference between GL 25 and higher hardness steel grits (e.g., GH 40)?
A: The main differences lie in hardness and application. GL 25 has lower hardness, is more economical, and suits routine cleaning and medium-duty surface preparation. GH 40 is harder, more wear-resistant, and designed for heavy-duty, high-intensity continuous cleaning operations. Our sales engineers can recommend the most suitable model based on your specific working conditions.
A: Absolutely. We not only provide high-quality products but also have an experienced technical support team. We can offer professional advice and support on abrasive selection, equipment compatibility, and onsite process optimization.
A: Standard packaging is 25 kg/bags, stacked on 1 ton/pallet, facilitating transport and storage. We cooperate with multiple logistics companies to ensure fast and safe delivery to your specified location.
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