Introduction to the method of judging the quality of protective door
the application of protective door is very common and involves a wide range of industries. The selection is different due to different industry performance. Protective door is a kind of door with special functions. If the quality is poor, the effect will be greatly reduced. Here is how to judge the quality of the protective door.
Quality of protective door
1. The seller is required to show the inspection certificate issued by relevant departments to check whether it meets the technical requirements of the national mandatory standard GB17565-1998.
2. Remove the cat eye, door bell box or lock handle, and check the internal structure of the door body There should be several reinforcing bars in the protective door to organically connect the front and rear panels of the door body Asbestos and other materials with fire prevention, heat preservation and sound insulation functions should be used as fillers in the protective door.