Manufacture of steel corners
The corner material is carbon or low alloy steel. They are produced on a special rolling mill, which makes them of different types. For example, when designing a design in a room, cold-canted corners are used. They make them according to the standard GOST 19771-93 and 19772-93( equal and unequal, respectively).
In the same cases, when strong structures and structures are required, a hot-rolled steel corner, GOST 8509-93 and 8510-86( hot and cold steel angles and unequal corners) are produced. From the name it can be understood that there are two methods of production. The first is by bending or rolling hot-rolled metal. The second is the rolling or bending of cold-rolled metal sheets. The strength of both depends directly on which grade steel was used.
Corner steel unequal and equilateral
If to speak about what kinds exist, then they distinguish a corner of steel equal and unequal. The first is called due to the fact that its opposite shelves have one size. For example, a corner of steel 50х50х5 or 40х40х4, where the last digit( 5 and 4) is the thickness. In general, its width can be different: from 20 to 200 mm. But the length can be from 4 to 12 meters. It has two markings - A and B.
A - means high precision of rolling, B - medium( regular).Very often this product is compared with the channel.
The second species is an unequal corner. Unlike the previous one, it has a different width of the shelves. For example, 130h85h8 mm. The first edge is 130, the second is 85, and the thickness is 8 mm. Do it strictly in accordance with GOST 8510-86.According to the accuracy of rolling, this kind of material has exactly the same designation - A and B( high and medium).Each of these species is used in its field, they will be described below. The weight of the steel corner of any type may differ depending on the size( from 0.89 to 36.97 kg / m).
Scope
So, as already mentioned, the scope of application is really diverse and depends on the type of material. For example, produced in accordance with GOST, the corner of the steel is equal to the even one is made of steel of usual quality. In this regard, it provides sufficient strength and, in addition, is distinguished by a low price. It is used most often in those structures where there is no need for high reliability and durability( utility rooms, sheds, temporary building constructions).
More expensive products are coming from low-alloy steel. They are applied in those structures and structures( as well as steel sheet), where reliability is required, as well as the ability to withstand any weather phenomena( temperature changes, high air humidity).In addition to construction, the equal-angle corners are used in the production of furniture( window and door slopes), machine-tool construction, mechanical engineering, and automobile construction.
Uneven beams are used in the manufacture of metal structures in both the construction and industrial sectors. They are good reinforcing components when reinforcing concrete products. And, finally, stainless galvanized corners( special type) are used in construction for roofs, in medicine. Their main advantage is the resistance to corrosion. Therefore, they can be applied in all areas where there is frequent contact with water.