If we talk about the design of a modern steel door, then we can directly say that they are no longer like their predecessor, which was cooked from corners and pieces of iron. Now the approach is completely different. The model can have a phymugu, glazing and be a lot or a single.
But nevertheless. There is something that will never disappear. These are the main elements. Steel doors have always had, and will have a frame (box) and body. There may still be a counter -rama, that is, a black frame. It is attached by welding to the crossbars (these are clogged powerful steel pins). Then to the draft frame, which adjusts the position in space, the usual frame is attached. But most do not even know about the existence of a draft frame. Just connect the box to the wall, metal pins help to strengthen it to the opening and then there is a shrinkage for welding.
Although in a kind, like a simple door structure, but if you figure it out, then each mechanism has its own role. And all together they are like: the presence of a canvas, and a locking system, and boxes, and filler and appearance, help create a new look. Before you buy steel doors to get acquainted with its characteristics.
About the canvases of the steel doors performed by us
Doors consist of several or one steel sheet. And the elements of stiffness here are beams and stiffness ribs. They can be arranged vertically, horizontally, or even designed in the form of a grid, create a combination. The thickness of steel profiles for them is from 1.5 to 4 mm.
For the manufacture of the canvas itself, frame technology is used. There are two types.
1.For frames, low -carbon steel rental can be used. And then the doors will be with good bearing capacity and resistance to shock loads.
2. Subtle stamped profiles are used for frames. Such doors will differ in spatial stiffness and ease.
The source materials should be high -quality, well -processed. Namely, this is precisely the quality and durability of the doorway canvas. Close attention must be paid to the thickness of the outer sheet. Because it is the protection of the entire locking system.
Its thickness should be up to 1.5-2 mm, in rare cases up to 4 mm. If the thickness reaches 6 mm, then you are already represented by armored doors. Neither pistol shots, nor Kalashnikov assault rifle are afraid of such doors. The outer sheet is characterized by the fact that thanks to it there is protection against sounds and smells. That is, due to tightness, the bore of the door itself is formed.