To points: 1. According to the density of low density of 0.9 1.2 g/cm3 and 1.2 1.5 g/cm3 density 1.5 2.0 g/cm3 density. The low density is generally used in low buildings ceiling partition etc, medium density is generally used in mid-range building partition condole top, highly dense is commonly used in high-grade building external wall, steel structure steel structure floor, etc.; At present, China's fiber cement board is divided into two categories according to the national building industry standards. High density fiber cement plate is easy to deform, low - density products should be less deformation coefficient.
2. Pressure: there is no pressure plate and pressure plate. Medium and low density fiber cement plates are all non-pressure plates, high density is pressure plates. The pressure plate is also called fiber cement pressure plate, which needs special press production. According to the density, the fiber cement pressure plate is divided into :1) ordinary plate with a density of 1.5-1.75g/cm3; 2) superior board, density 1.75-1.95g/cm3; 3) special board, density 1.95g/cm3 above.
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