Vzlomostoykie entrance doors

In the modern world, the issue of theft and burglary is acute. There are too many people encroaching on the good of others. The skill of the intruders is constantly growing. To which only sophisticated technicians do not bastards resort to "pass through the wall" and profit from someone else's good. To protect your house from unexpected guests, you need to properly equip the entrance opening. What is needed is not simple, but entrance burglar-proof doors, which have some fundamental differences from standard models.

Burglar resistance class is the most important characteristic of burglar-proof doors. It shows how the door can resist hacking. This is not just an invention of the manufacturer, but a standard approved by the state standard specification. In Russia there are 13 classes of this classification, in Europe - 6, and they differ from Russian in their characteristics.

Before the door leaf is awarded a class, it undergoes a series of tests:

• confrontation static load. The product must not shift, change shape;
• confrontation dynamic load. It should not be damaged: dents, holes, cracks;
• standoff manual hacking.

The higher the class of digital value, the better its protective properties.

The first 4 are for residential doors:

1. Amenable to cracking with a handheld device (mount, scrap) and physical activity. For example, such a door knocked foot. At a pressure she will surrender in 5-9 minutes. As a rule, it is a wooden sheet covered with tin sheet. Its price is low, and the quality makes you want the best;
2. The door unit of this class is equipped with anti-detachable pins, it can be opened only with the help of specialized tools;
3. Resists a more powerful tool, for example, the Bulgarian. To cover the door leaf using MDF, veneer. Resists strength in 10-30 min;
4. Armored and bulletproof doors.

Door blocks of 5-13 classes are designed for monetary and depositories of values: banks, state museums and other similar institutions. Their weight can reach up to 1 ton, and the price - up to $ 3000.

Burglar resistance class is based on the concept of "resistance to cracking" (EU).

It is calculated by the formula: Ec = k · t + b, where:

• k is the tool coefficient used when hacking.
• t is the time required for hacking.
• b - characteristic of the complexity of the delivery tool, the amount of time to prepare it for work.

Having passed all tests for burglary resistance, the product receives a certificate.

According to him, the door is marked in the form of signs: M1, M2, M3, and also U, Z.

• M - strength class. M1 - the highest.
• U - reinforcement of door blocks with anti-detachable devices.
• W - must withstand the load of a certain force.

The certificate can receive a product belonging to class 2 and above.

When choosing a reliable door leaf, it is necessary to know how burglar-resistant doors differ from ordinary doors and, therefore, they so courageously protect the house and property.

Door leaf - this is one of the main components. It is usually made of high-alloy steel, that is, it has impurities of other metals that increase its strength. The canvas consists of two sheets, supported by stiffeners. In rare cases, there is a sheet with glass.

There is an opinion that the thicker the steel of the door leaf, the better. It is not always so. The width of the metal sheet in the doors of grades 1-4 is often equal to 2 mm, and in the area of ​​the lock due to additional plates - 5-8 mm. And it does not reduce its durability.

Stiffeners are metal bars P and Z - shaped. Their function is to ensure the durability and strength of the product. It is mandatory to have transverse and longitudinal ribs for burglar-resistant doors. The lateral ones do not allow to squeeze the canvas from the hinges and the lock, and the longitudinal ones provide protection from above and below.There must be at least 4 of these edges. Almost all the load is placed on them, thanks to them the web is not deformed. They also facilitate its weight.

Metal box - door body. For maximum protection, boxes of 1.5 mm metal sheets with a bent-welded profile with platbands are recommended. The thickness of the porch - 4 mm.

For decorative decoration can be used various materials and techniques:

• laminated and painted panels;
• metal spraying;
• leather;
• polymerization;
• tree.

An important component - a heater. It is laid between sheets of a cloth. Foam or mineral wool is not applicable here. In burglar-resistant doors using cement-bonded chipboard, plywood. They resist abrasive discs used by intruders.

The crossbars are a metal rod that enters the door frame and is activated by a lock mechanism. It provides increased locking points.The number of bolts varies from 6 to 12 depending on the class of the door.

The hinges should be on the bearings and always with anti-pins that prevent the dismantling of the doors.

The lock is a very important component of the door. It must be reliable, secret, resist hacking.

The locking mechanism consists of 2 parts:

• the executive part is the mechanism itself which is responsible for closing / unlocking the door. These include the bolt, shank, straps;
• the secret part is the code ciphers that recognize the key.

For a vzlomostoykogo cloth using 2 types of locks:

1. Suvaldovy castle - a set of plates (suvald) with cuts that inhibit the bolt. This is the code part of such a lock. Its secrecy depends on how many plates are in it, how they are located, and the number of their combinations (over 5,000,000 for a high degree). The presence of false grooves, tight springs on the plates, spring pins, protection against forceful hacking, the ability to recognize master keys strengthens secrecy. This lock has a fairly high reliability.
2. Cylinder lock. Its basis is the cylinder. Turning, he opens the door.But this can only be done with your own key.

• The most common pin type cylinder lock. Its secret part is a group of pins, which, if inserted into the lock of someone else's key, prevent its opening.
• Another type of lock is frame. It consists of spring frames with teeth. When trying to open the door with a non-native key, the teeth are fixed in the slots, and this prevents the cylinder from turning.

For castle mechanisms there is also a class gradation. It depends on its resistance to force effects:

• Class I: such locks are installed in utility rooms and in interior doors. Resistance to cracking - 5 minutes;
• II class: resist unauthorized entry for 5-10 minutes. Installation in apartment doors is possible;
• Class III: counteract the cracking of 10 minutes. Suitable for equipping apartment doors, protected premises;
• Class IV: possess high protective properties.Ideal option for entrance doors to rooms with high values. Resistance time - 30 minutes.

At present, the lock mechanism can be opened not only with a conventional key, but also at a distance (using a key fob), with an electronic key, with a magnetic stripe card.

If you live in your own house or apartment, then you do not need to provide your doors between the rooms with some kind of over-protection.

But if you share one house with someone in half or rent a room, it is advisable to protect your property from unknown neighbors. Here the burglar-proof door will come to the rescue. After all, theft in communal apartments is not uncommon.

So, choosing a burglar-resistant entrance door, do not rush, every detail is important here. If in doubt, seek help from a specialist. After its acquisition, do not relax, because you still have to install it. After all, it is 50% of the success of the functioning of your things. Resort to the help of a professional team, which, assessing the field of activity, will offer you the best option for installation.

That affects burglary entry doors, see the following video.