Metal technical doors - characteristics

Technical doors - this is a fairly large group of models made of metal and designed for special rooms. They are used for:

• Entrance, elevator or tambour;
• For the organization of cash (with a window for the issuance of money);
• In technical rooms, attic and basement, at the entrance to the hozblok;
• For boiler or switchboard.

Often, metal technical doors are installed in warehouses, production and trading buildings. They are equipped with modern locks, the class of resistance against breaking into which largely depends on the main goals of the customer and the degree of value of the protected object.

Practically in each model a double set of locks is installed - a cylinder design and a saddle. This "double protection" system prevents mechanical and intellectual hacking. Metallic technical doors can be equipped with an eyelet, and as additional protection are installed on the hinges of the removal blockers, armored pads that protect locks from drilling.

Differences from conventional doors

What are the main differences of such doors from traditional metal models that we used to see at the entrance to the apartment? First of all, in that in this case the main meaning is given to the functionality, the appearance goes to the background.

Producing metal technical doors, the manufacturer takes into account the requirements that correspond to the premises for which they are intended. For example, for boilers and boiler rooms, ventilation or glazing is necessary.

Additional functions

In addition, models of this group are equipped with electromagnets, "panic" type locks, latches, selectors, additional seals, door closers and ventilation grilles.

Technical metal doors are painted by a powder spraying method, using nitro-enamel or special paints that have anti-corrosive additives.

Metal doors technical - characteristics

This type of door includes fire doors, insulated, non-standard, doors with bars, lightweight, technical doors-hatches, technical gates, doors, double-faced and single-ended doors, etc.

In the manufacture of such doors, the following materials are used:

• Sheet steel sheet (from 0.8 to 2 mm);
• Sheet galvanized steel (0.8 - 1.5 mm);
• Stainless steel (from 0,8 to 1,5 mm);
• Combined wood and MDF;
• Plastic extruded or PVC.

Metal technical doors produce single-walled, two-lapped and one-and-a-half. They have different shapes, a way of glazing, are made out by transoms or side windows.

The basis of all models is a steel frame. On it weld steel sheets (2-10 mm). There are structures, the box of which is poured with concrete and as a result forms a monolith with a wall, which has great strength. This door can not be knocked out.

Inside the structure can be both hollow, and containing heat-insulating and sound-proof material. Finishing can be different - it depends only on the wishes of the customer.

Fireproof doors

It is necessary to dwell on this kind of doors. Their device involves the use of fireproof materials both outside and inside. Their door leaf is made of steel sheets, which are difficult to ignite. Their thickness is much larger than that of the standard canvas.

Such doors with fire reinforcement have a box, which is a curved metal profile filled with heat and sound insulation material. Doors are necessarily equipped with special fittings and locks. In addition, they have a seal, which guarantees the integrity of the structure. There are models with refractory glasses.

Fireproof doors have a thermal insulation material that fills the free space between two steel sheets. In budget models, its role is played by mineral wool, capable of withstanding temperatures of up to 1000 degrees. In more expensive models, the heat-insulating material is refractory foam. It lasts longer than the mineral wool, resists the fire and excludes the penetration of smoke into the room.