Security door plays a very important role in the protection of our home space. Without the protection of security door, the security of our home will not be well guaranteed, which is also the reason why we need to be very careful when we buy security door. So how to distinguish the true and false and the quality of the security door? The following manufacturers of cast aluminum fireproof door, bridge broken aluminum fireproof window and steel fireproof door introduce the identification method of anti-theft door:

1. The seller is required to show the "test certificate" of relevant departments to check whether it meets the technical requirements of national compulsory standard GB17565-1998.

2. Hefty security door weight, regular security door weight is not less than 40 kg.

3. Check the process quality of products, whether there are welding defects, whether the cooperation between door leaf and door frame is dense, etc.

4. Remove the cat's eye, doorbell box or lock handle, and check the internal structure of the door. There should be a reinforcing steel bar in the door to make the front and rear panels of the door organically connected. There are asbestos and other materials with functions of fire prevention, heat preservation and sound insulation inside the door as fillers.

5. Check whether the lock adopts the anti-theft special lock which has been tested by the public security department, and whether there is a reinforced steel plate at the lock device for protection.