Everyone, for sure, is familiar with the winged phrase: “My house is my fortress”. One of the important factors of the reliability of your “fortress” are, of course, the “gate” – in other words: “doors”. For many years, steel doors have been guarding apartments and a strong, carefree sleep of their owners. They are installed as external doors, entrance to the apartment, office, garage, etc. D.
First you need to remember that the doors are steel and the doors are iron – these are slightly different things. Steel doors are a private type of iron. And highlights them, of course, the material of manufacture. Already from the name it is clear that steel doors are made of steel (the most durable of known alloys with iron). And the strength of the material is one of the most important indicators of the reliability of the doors. But not the main one.
Correct doors are not some kind of metal that is attached to the loops in the doorway, but a complex engineering structure, which has a lot of nuances and secrets. Manufacturing and installation technologies were improved for years. Everything for the sake of preventing hacking and illegal penetration into the apartment. And no matter how much thieves come up with new cunning ways of opening, the correct doors always take a step ahead of the attackers.
The reliability of steel doors depends on what depends?
Steel doors have a frame, which, in turn, is attached to a thick steel sheet. Thanks to the frame, this sheet acquires much greater resistance to mechanical influences and is not deformed at loads, several times higher.
Together, the frame and sheet are a rather formidable barrier, which is impossible to break out without the help of rather weighty devices.
Castles in steel doors are part of them, and are not at the same time. They are constructed, improved and produced completely separately from the doors, but in the issue of the reliability of the doors it is very important to choose the right locks. The door type matters: external doors, entrance doors, interior (although, it is unlikely that anyone wants to put iron interior doors), office doors. For each type of door, locks are selected by the corresponding type. They have many different protection mechanisms from hacking and choosing a key.
Install, usually several locks in one door. This provides greater reliability of the steel door and simplifies the hosts to the hosts, in case any of the castles fails. With the optimal selection of doors and locks, a good lock cannot be opened or cut out if the door is correct.
Installation – the factor is very good. The installation of steel doors should be trusted not just to installers, but by professional installers. The difference between them, approximately, as well as between the steel door and iron), in other words: not every installer is a professional. And the steel door, poorly installed, is the money over the wind.
Initially, the installers measure the doorway, the frame is made on these measurements (accuracy is very important). The steel door must be fitted tightly, without a single clearance, and the crossbars (metal pins) are firmly installed in the doorway and tightly welded to the door frame-impeccable compliance with these conditions will be guaranteed that the door will simply not tear out the door.
Of these three factors, the reliability of good steel doors is formed: it cannot be broken, pulled out, or simply open (hacking or cutting out the lock). There is, of course, another way: to pull the door with part of the wall, but this is already in case of war. In the meantime, if you have steel doors, you can not worry about the safety of your apartment.
