First, security door level

Anti-theft door full name anti-theft security door, the latest national standard "anti-theft security door general technical conditions", will anti-theft door level is divided into: a, b, C, D four levels. The grade of anti-theft door is according to the steel thickness of door body and anti-theft door damage time to distinguish.

The door frame should be 2.00MRN, 1.80mm, L.50mm respectively according to the b, C and D levels of anti-theft security. Of door fan outside board, inside face plate ply uses "outside board/inside board" form expresses, by guard against theft safety b, c, d level is respectively. 1.00 mm/ 1.oo mm, 0.80 mm/0.8O mm, 0.80 mm/0.6 mm.

Anti-theft door full name anti-theft security door, according to the provisions of the state qualified anti-theft door anti-damage time is not less than 15 minutes, if it is lower than the specified time is not safe qualified anti-theft door, so only a class A anti-theft door and class B anti-theft door is in line with the standard security level of the anti-theft security door. General household anti-theft door is given priority to with third class, d class, the level is higher, anti-theft performance is also higher.

Two, anti-theft door lock core standard

In addition to the door itself, the door lock is also the key to anti-theft, the country will anti-theft door lock core is divided into three grades:

Grade A is the most primitive and most unsafe lock core, the owner's key is flat, only single side single row bullet slot, some cross keys also belong to grade A, such A lock can be opened only two or three minutes, familiar hands will be faster.

B grade is safer grade, from the key to see is double-sided double row bullet groove, such a lock if there is a tool, skilled workers to 10 minutes or so open.

Grade C lock is the safest grade at present. It is generally double-sided and double-row bullet grooves from the key, and there is A blade or curve beside them. The opening time of anti-technology is higher than that of grade B and GRADE A.

Three, security door classification

Specific thickness: the thickness of the steel plate determines the strength of impact resistance. Thickness of cold-rolled steel plate for door frame: 2 mm, 2-1.8 mm, 1.8-1.5 mm and 1.5 mm for class A, B, C and D respectively. Thickness of door panel: 1 mm, 1 mm, 0.8 mm and 0.8 mm for class A, B, C and D respectively. Thickness of door panel: 1 mm, 1-0.8 mm, 0.8 mm and 0.6 mm for class A, B, C and D respectively.

Than filler: the national provisions of anti-theft door worst to use honeycomb paper as filler, class a door according to the different brand of anti-theft door, filler is not the same, have a plenty of aluminum silicate rock wool (fire cotton), have a plenty of aviation honeycomb aluminum, also have a plenty of aluminum foil. Class A security doors are usually made of aluminum silicate rock wool and aluminum foil. Aluminum silicate rock wool has good thermal insulation, fire prevention and sound insulation performance, aluminum foil light weight, corrosion resistance, non-toxic and tasteless, has good thermal conductivity, heat resistance and low temperature resistance. Under normal circumstances, grade B security door selection is 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. Polyurethane foam has no gap after filling, and strong bonding after curing. Shock resistance, no cracking, no decay, no falling off after curing, with low temperature thermal conductivity, heat preservation resistance. High efficiency insulation, sound insulation, waterproof and moisture-proof after curing. The general market of grade C and D filling is honeycomb paper, basically no insulation, fire and sound insulation performance.

Than lock: lock against theft is the most important component to the door, the stand or fall of lock performance against theft concerns the security of the door directly. The anti-theft door produced by regular manufacturers will have a song Typeface gravure "security level mark" in the upper left corner of the door. Class A anti-theft door lock for class B, that is, advanced protection level; And door of second, third, fourth class guard against theft, its lock guard against theft level is A class, namely common protection level. The anti - damage time varies significantly by level. A minimum of 30 minutes, b minimum of 15 minutes, C minimum of 10 minutes, D minimum of 6 minutes. At the same time, observe the lock points between door frame and door fan, a, B, C, D level security doors should be no less than 12, 10, 8 and 6 respectively.