| Quantity: | |
|---|---|
GL
72051000
Introduction
GL is medium-hard cast steel grit balancing performance & cost, sitting at medium hardness between GP and GH. Produced through two-stage modified quenching & tempering, it retains sharper angular durability than GP and better toughness than GH. Suitable for both wheel blasting and enclosed air blasting, it is widely used for moderate-to-heavy rust removal, oxide elimination and substrate profiling before conventional anti-corrosion coating.
Typical Specification
Main Size (GL Series) | |||||
| G16 | G18 | G25 | G40 | G50 | G80 |
| Chemical Composition | |||||
| C | Si | Mn | P | S | / |
| 0.8-1.2 | ≥0.4 | 0.35-1.2 | ≤0.05 | ≤0.05 | / |
| Hardness | Denisty | Apparent Density | |||
| HRC53-60 | ≥7.6g/cm3 | 4.2g/cm3 | |||
Key Advantages
1. Balanced efficiency & cost: ~20% faster cleaning efficiency vs GP at lower unit price than GH, top choice for mass structural steel processing;
2. Stable anchor profile: Produces uniform anchor pattern 1.0~3.0mil, compatible with epoxy, alkyd and polyurethane anti-corrosion coatings;
3. Dual-purpose for wheel blasting & compressed-air blasting: Works for bulk steel plates and irregular-shaped workpieces;
4. Favourable recycling lifespan: Medium breakage rate ensures controllable long-term abrasive expenditure.
Application Fields
1. General steel construction: Derusting factory frames, space trusses and container panels from medium rust & old paint;
2. Construction machinery: Surface treatment for loader & excavator structural parts and medium-thick steel oxide removal;
3. Pipes & storage tanks: Pre-treatment for carbon steel pipelines and atmospheric storage tank outer walls;
4. Ship auxiliary components: Rust cleaning for ship sections and marine section steel.
Selection Tip:
GL10~GL16 for thick plate & heavy rust;
GL18~GL40 as universal mainstream grade;
Below GL50 for thin sheets & precision component fine blasting.
