The anti-theft door full name is the anti-theft security door. The latest national standard "General Technical Conditions for Anti-theft Security Doors" divides the level of the anti-theft door lock core into four levels: A, B, C and D. The door frame shall be selected from 2.00mrn, 1.80mm, and l.50mm according to the security level of B, C and D. The thickness of the outer panel and inner panel of the door leaf is expressed in the form of “outer board/inner boardâ€, and the levels of B, C and D are safe according to the security. It is 1.00mm/1.OOmm, 0.80mm/0.8Omm, 0.80mm/0.6mm. The general household security door is mainly grade C and butyl. The higher the level, the higher the anti-theft performance.
Anti-theft door lock core level standard In addition to the door itself, the door lock is also the key to theft prevention. The state divides the security door lock lock cylinder into three grades: the A grade is the most primitive and the most unsafe lock cylinder, and the owner's key is flat. There are only single-sided single-row bullet slots, and some cross keys are also classified as Class A. Such locks can be opened in about two or three minutes, and the familiar hands will be faster. Class B is a safer level. From the key point of view, it is a double-sided double-row bullet slot. If such a lock has tools, the skilled worker should open it in about 10 minutes. Super B-class lock is the safest grade at present. From the key point, the general double-sided double-row bullet slot has a blade or curve next to it. The technical standard of the lock core design should be opened for more than 280 minutes. The general skilled unlocking master also It takes a little hour.
Anti-theft door lock core level distinction
Specific thickness
The thickness of the steel plate determines the strength of the impact resistance. The thickness of the cold-rolled steel sheet of the door frame is 2 mm, 2 - 1.8 mm, 1.8 - 1.5 mm and 1.5 mm, respectively. The thickness of the outer wall of the door leaf is 1 mm, 1 mm, 0.8 mm and 0.8 mm, respectively. The thickness of the inner panel of the door leaf is 1 mm, 1-0.8 mm, 0.8 mm and 0.6 mm, respectively.
Specific filler
The state stipulates that the worst security door should use honeycomb paper as the filler. The grade A door is different according to the brand, and the filler is different. Some are aluminum silicate rock wool (fireproof cotton), some are aviation honeycomb aluminum, and some are aluminum foil. Grade A security doors are usually made of aluminum silicate wool and aluminum foil. Aluminum silicate rock wool has good thermal insulation, fireproof and sound insulation properties. The aluminum foil is light in weight, corrosion resistant, non-toxic and tasteless, and has good thermal conductivity, heat resistance and low temperature resistance. Under normal circumstances, the second-grade security door is made of rock wool and polyurethane foam. The advantage of rock wool is that it has a good flame retardant function and is a poor conductor of heat. The polyurethane foam has no gap after filling, and the bond is strong after curing. Shockproof and compressive, no cracking after solidification, no corrosion, no shedding, ultra-low temperature thermal conductivity, and heat resistance. Efficient insulation, sound insulation, waterproof and moisture proof after curing. The general market for both grade C and butyl grades is honeycomb paper, which has essentially no insulation, fire and sound insulation properties.
Than lock
The anti-theft lock is the most important part for the door. The performance of the anti-theft lock is directly related to the safety of the door. The security door produced by the regular manufacturer will have a "safety level imprint" in the upper left corner of the door. The anti-theft level of the Class A anti-theft door lock is Class B, which is the advanced protection level; while the B, C and D-class security doors have the anti-theft level of the anti-theft door lock core of Class A, that is, the general protection level. The vandal-proof time is clearly different because of the different levels. Grade A is not less than 30 minutes, Grade B is not less than 15 minutes, Grade C is not less than 10 minutes, and Grade D is not less than 6 minutes. At the same time, observe the number of locking points between the door frame and the door leaf. The security doors of A, B, C and D should be no less than 12, 10, 8 and 6 respectively.
Editor in charge: Liu Changqi
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