glass magnesium oxide board specifications:
1. fireproof:
It reaches the standard of GB8624, CLASS A, British standard 476: part7:1997, and part 4:1970 class one surface spread of flame, and non-combustible class
2. waterproof:
It can keep its shape and character after soaking in water for a few days.
3. Soundproof and heat preservation
4. No asbestos
5. Environmental protection:
It is totally 100% green boards
6. Easy to install:
It can be treated in the way of sawing, planning, drilling, nailing and cutting etc.
Test item | Technical requirement | Test results | Results |
Density (g/cm3) | | 0.9 | Qualified |
Bending strength(Mpa) | ≥10 | 16.0 | Qualified |
Impact strength (KJ/m2) | ≥2.5 | 10 | Qualified |
Moisture absorption | No moisture | No moisture | Qualified |
Water content (%) | ≤8 | 3.7 | Qualified |
Contraction rate when heated (%) | ≤0.3 | 0.1 | Qualified |
Expansion when put into water (%) | ≤0.6 | 0.23 | Qualified |
Crisp coefficient | ≥0.7 | 1.3 | Qualified |
Warp when heated (‰) | ≤3 | 0.12 | Qualified |
Put out of nails | e<6 | 6<e<10 | e >10 | 35 | Qualified |
≥25 | ≥20 | ≥15 |