What is A240 fittings (GOST 5781-82)? This is a special auxiliary element that ensures the proper functioning of certain structures, devices and equipment. The fittings are one of types of high-quality metal rolling. It prevents the destruction of finished products and increases the strength of reinforced concrete structures, products tens of times, so that they can withstand huge loads.
Modern classification of fittings
Depending on the functional purpose, the reinforcement differs in the chemical composition of steel, production method, basic characteristics and diameter of the section. The greatest demand is for reinforcement of class A240 with a diameter of 10 millimeters. A wide range of products today offers many companies.
There is reinforcement on the market, which is classified by a number of parameters:
- Type of cross section. The fittings can be made in the form of a periodic profile with a flat and smooth surface.
- Production technology. There is cold-rolled and hot-rolled wire fittings. It goes on sale in bays with wire skeins or rods.
- Method of use in concrete mortar. Distinguish between unstressed and prestressed reinforcement.
- Method of strengthening. There is an A240 reinforcement that has been hardened or tempered under high temperature and produced by cold hardening ā by drawing or drawing.
Features of A240 fittings
Like any other material, this type of reinforcement has certain properties that maximize its quality. First of all, it is necessary to highlight flexibility and rigidity, if necessary, the rod can be given any shape, while the design will not lose its strength. Thanks to special processing, the A240 fittings withstands high mechanical loads and is completely resistant to corrosion. It is also worth noting that this material is durable and durable, and this allows it to be used in the construction of multi-story buildings.
There is one subtlety in the marking of A240 fittings, if the letter ācā is indicated here, this indicates its weldability. Due to its low cost and the above qualities, it is in high demand.
Application technology
A240 fittings are sold in different lengths, so before erecting walls and filling floors, the rod is cut to size for the frame. The segments are fastened together by welding or by wire.
The finished reinforced structure is installed in the required position and poured with concrete mortar. After solidification, it acquires extremely high strength and the ability to withstand high pressure, weight, vibration and even a powerful shock wave, while maintaining an integral structure.
Reinforcing applications
The A240 fittings are used most in the construction industry. This is the production of various plates and pillars, pouring floors, walls, columns, reinforced concrete structures and many other operations, where the main criteria are strength and reliability.
It is worth noting that the reinforcement is used not only for the erection of reinforced concrete structures, but also in the manufacture of metal doors, window bars, fences and fences in the adjacent areas, various railings, stairs, stiffeners and many other products.
Fittings today can be purchased at any specialized company, and without limitation in standard and quantity. Products are presented in any size, length and performance. Therefore, each person can purchase fittings for themselves according to the requirements of current circumstances, personal preferences and financial capabilities.