Aluminum plate absorbs sound Pinhole composite sound-absorbing aluminum plate product features: light weight and pollution-free, anti-glare, anti-aging, impact resistance, freeze-thaw resistance, stable sound absorption coefficient, moisture resistance, corrosion resistance, easy bending and processing, easy transportation, easy to disassemble and maintain, cost-effective, and can be sprayed in various colors. Technical parameters of pinhole compound aluminum plate: 1. NOISE REDUCTION COEFFICIENT: NRC≥0.70 WHEN 75MM CAVITY; 2. Sound insulation: ≥30dB (A); 3. Artificial acceleration weather resistance (250h): no chalking; 4. Salt spray corrosion resistance: acidic 1000h, appearance grade 10, no pitting, blistering, peeling and other corrosion phenomena; 5. Tensile load: ≥1305N; 6. Fire rating: Class A non-combustible.
