What are the kinds of stuffing inside the security door?
1. Honeycomb paper 2. Polyurethane foam 3. Fireproof cotton 4. Aluminum silicate. Regardless of what can be called anti-theft door, because according to the new standard, and does not require internal filling, only the provisions of the thickness of the steel plate and the door, lock anti-opening time.
Filled with the general market are honeycomb paper, there are good points on the use of aluminum silicate rock wool (fire cotton), but also stare at Chi Fei Fan Fen crossing petty play a variety of a, B, C Grade, the surface color is basically white and yellow 2 kinds.
The internal filling of the anti-theft door of the country must be made of aluminum silicate rock because of the need for silicon, Alkaline rock wool has a good insulation, fire and noise performance.
