Technical doors - this is a fairly large group of models made of metal and designed for special rooms. They apply to:
- entrance, elevator or vestibule;
- for organizing a cash desk (with a window for issuing money);
- in technical rooms, attics and basements, at the entrance to the utility block;
- for a boiler room or switch room.
Often, technical metal doors are installed in warehouse, industrial, and commercial buildings. They are equipped with modern locks, the burglary resistance class of which largely depends on the main goals of the customer and the degree of value of the protected object.
Almost in every model a double set of locks is installed - a cylinder design and a lever lock. Such a "double protection" system prevents mechanical and intellectual hacking. Technical metal doors can be equipped with a peephole, and as an additional protection, removable locks, armored linings that protect the locks from drilling are installed on the hinges.
Differences from ordinary doors
What are the main differences between such doors and traditional onesmetal models that we used to see at the entrance to the apartment? First of all, in the fact that in this case the main value is given to functionality, the appearance fades into the background.
When manufacturing technical metal doors, the manufacturer takes into account the requirements that correspond to the room for which they are intended. For example, boiler rooms and boiler rooms require forced ventilation or glazing.
Additional features
Additionally, models of this group are equipped with electromagnets, anti-panic locks, latches, selectors, additional seals, closers and ventilation grilles.
Technical metal doors are powder coated using nitro enamel or special paints that contain anti-corrosion additives.
Technical metal doors - specifications
This type of door includes fire doors, insulated, non-standard, doors with bars, lightweight, technical hatch doors, technical gates, doors, double-leaf and single-leaf, etc.
The following materials are used in the manufacture of these doors:
- sheet steel blade (from 0.8 to 2mm);
- galvanized steel sheet (0.8 - 1.5 mm);
- stainless steel (0.8 to 1.5 mm);
- combined wood and MDF canvases;
- extruded plastic or PVC.
Technical metal doors are produced as single-panel,double and one and a half. They have a different shape, glazing method, are decorated with transoms or side windows.
The basis of all models is a steel frame. Steel sheets (2-10 mm) are welded onto it. There are structures, the box of which is filled with concrete and as a result forms a monolith with a wall, which has great strength. This door cannot be knocked down.
Inside, the structure can be both hollow and containing heat-insulating and sound-proofing material. Finishing may be different - it depends only on the wishes of the customer.
Fire doors
It is necessary to dwell on this type of door. Their device involves the use of fire-fighting materials both outside and inside. Their door leaf is made of steel sheets that are difficult to ignite. Their thickness is significantly greater than that of a standard blade.
These doors with fire protection have a frame, which is a bent metal profile filled with heat and sound insulating material. Doors must be equipped with special fittings and locks. In addition, they have a seal that guarantees the tightness of the structure. There are models with fire-resistant glass.
Fire 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, which can withstand temperatures up to 1000 degrees. In more expensive modelsrefractory foam serves as heat-insulating material. It lasts longer than mineral wool, resists fire and eliminates the penetration of smoke into the room.
