The appearance and types of security doors
According to the standard "General Technical Conditions for Anti-theft Security Doors" promulgated by the Ministry of Public Security, anti-theft doors can be divided into three types: fence-type anti-theft doors, physical doors and composite doors.
China's anti-theft door first appeared in the 1980s, and Chongqing Meixin first developed the fence-shaped anti-theft door. However, as the anti-theft fence door gradually exposed the shortcomings of poor anti-theft performance, a stronger and safer steel anti-theft door (physical door) appeared, and the spraying technology was applied here .
The compound anti-theft door is composed of a solid door and a fence-type anti-theft door, which has the characteristics of ventilation and cooling in summer. This is what we often say "door in door".
Causes of reddish brown
With the improvement of process technology and people's aesthetics, in 2002, Shanghai Ruisi Le produced a wood-shaped steel anti-theft door, which used wood grain patterns to simulate traditional solid wood doors in appearance, combined with many foreign advanced technologies, using transfer Technology After spraying a certain thickness of pure polyester powder on the steel plate, the ink is printed on the sprayed layer by a heat transfer process, and it is infiltrated to the bottom of the coating to complete the color of the door panel.
Then place the wood grain pattern on the door panel, print it and tear it off, this step is the same as the tattoo sticker. As a result, there is a wood-grained texture, a more realistic three-dimensional imitation solid wood appearance security door.
Reddish brown is the color closest to the original trees. In order to make the wood grain look more realistic and natural, the reddish brown background has naturally become the first choice.
In the final analysis, it is because of the Chinese people's feeling of "solid wood" and their fascination with "solid wood", which is why the anti-theft door is reddish brown.
Security door is the most important security
â– on the door â–•
According to the implementation of the new national standard "General technical conditions for anti-theft security doors" from April 1, 2008, the new national standard divides the anti-theft security levels of anti-theft doors into four levels, A, B, C, and D. The anti-theft security performance of anti-theft doors of different anti-theft levels It is different.
The new standard has made mandatory provisions on the security performance of the anti-theft door. The anti-theft door has been classified into anti-theft safety grades according to the indicators such as the length of time of anti-destruction and the thickness of the plate. The new standard divides the anti-theft safety level from the original A, B and C The level has been increased to 4 levels: A, B, C, and D. The pinyin letter codes of the new anti-theft security level are J, Y, B, D, and A is the highest level.
Anti-theft doors of different anti-theft grades have different anti-theft security performances. The anti-theft time for Class A anti-theft doors shall not be less than 30 minutes, Class B shall not be less than 15 minutes, Class C shall not be less than 10 minutes, and Class D shall not be less than 6 minutes. The thickness of the steel plate of the door frame should be 2mm, 2mm, 1.8mm and 1.5mm for grades A, B, C and D respectively.
Among them, new regulations require that anti-theft doors should have permanent fixed marks to help consumers identify the authenticity of the anti-theft doors.
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