In general, rebar without tread is called a simple round steel bar. This product is widely used in construction projects. The weight is calculated per ton of course. As you know, there are two main types of rebar on the market, rebar and regular, which have different properties. There are three types of ribbed rods on the market: helical, twill, and composite. Also generally, reinforcement is divided into two categories: branched and coiled. Typically, simple steel reinforcement is used in concrete to compensate for the concrete's low tensile strength. The diameters mentioned in this product identification table are nominal diameters. Most simple rebars have a certificate sheet in which the product analysis is given. The use of this steel bar can also be mentioned in industry and construction. To produce this rebar, the ingots are first placed in a furnace at a temperature of 1100 degrees Celsius using hydraulic jacks in certain rows, and when the ingots are placed in the furnace, they are ready to be eddy current rolled at a high temperature. After reaching the desired temperature, the ingots are sent to the production line for rolling, after which the baked ingots are placed on rollers and directed to the next step. The scrubbing step reduces the diameter of the ingots and increases their length in three steps. After the scrubbing stage, they go to the scissor stage to cut the produced steel bars to specific lengths without going through the frame step of reinforcing the bars. The produced steel bars are cut according to the Iranian ISIRI standard under the packing guillotine and finally packed into bales. Mechanical properties of non-patterned steel bars The tensile strength of the threadless rebar is approximately 360 N/mm2 and the yield stress is 240 N/mm2. In terms of hardness, simple steel bars belong to the soft category. Simple rebar application This product is used as a structural element in reinforced concrete or as a round bar in reinforced concrete buildings. This type of rebar is also seen in some cases as being used as thermal rebar in buildings, a common failure in building construction. Also among other uses of this product, we can mention industrial shafts and facades, while ribbed steel bars are used in construction and concrete structures. How to determine the price of simple rebar To find out the price of this product, the easiest way is to go to the sales center and ask for the price. But you should know that there are many factors that affect the price of simple rebar. The main area of consumption of this product is the construction industry, so we conclude that the improvement or stagnation of the housing market has a great influence on the increase in demand for construction profiles and the price of steel bars. In addition to the demand for the product, political and economic issues, and international factors also affect its price. The price of the product is basically determined based on the price of the raw material plus its production costs. In addition, transportation costs will directly affect the price of simple rebar. The current highest price can be considered the price of Isfahan rebar, which is also the highest quality available. The difference between non-ribbed and ribbed steel This type of rebar is called ribbed because of its ribbed surface. The structural properties of these products are superior to simple steel bars. Ribbed steel bars are used to increase the strength of concrete structures by 30% to 40% Due to the tensile, bending, and elastic properties of reinforced concrete, such steel bars are used in metal skeletons of concrete structures. The calculation properties of rebar are:
- surrender resistance
- Rebar spacer
- tensile strength
- Ribbed bar standard
According to the old standard, these reinforcement types were called A2, A3, and A4. But under the new standard, these products are called 340 ribbed bars (spiral), 400 or double ribbed bars, and 500 or compound ribbed bars. The product is available in diameters from 5.5 to 40 mm. Check the default type of reinforcement In general, there are 6 common types of rebar on the market, including the following
- European
- Carbon steel
- Galvanized
- epoxy coating
- Glass fiber
- Stainless steel
European rebar: This rebar includes carbon alloys, manganese, silicon, etc., mainly using manganese as raw material. The reason for its popularity is the price of the product. The resistance is small, and it is prohibited to use in earthquake-prone areas. Carbon steel: This product is also called black rebar. This product is not recommended as it does not rust easily in wet places. Epoxy rebar: It is the same black rebar with epoxy coating, so it is more resistant to rust. Galvanized rebar: This product is more resistant to corrosion than epoxy rebar and is therefore more popular. The price is of course also higher than the one with epoxy coating. FRP rebar: Its composition is similar to carbon fiber and has good rust resistance. Stainless steel: Stainless steel is the most expensive steel on the market. This product can be considered the best type of rebar on the market. This product has a wide range of applications in civil engineering. In fact, the minimalist version of this product is so different from the ribbed version that it is somehow impossible to compare. The reinforced type has more uses in construction and industry than the simple type, but simple steel also has its own unique properties. Since rebar is one of the most used steels, it is important for many to know the current and latest prices for this product. Typically, these products are used to compensate for the low tensile strength of concrete. The diameters on this product identification sheet are their nominal diameters. This simple steel cross-section usually has an identification sheet that includes product analysis. The reinforcement types are divided according to different parameters with regard to appearance, material, and diameter. steel bar weight There are many properties and qualities affecting the weight of the steel bar. Based on the qualities they have, In the production process of steel bars, specific and certain sizes of steel bars are used, and they are also divided into different genders. We refer to the following:
- European rebar
- Full carbon or (black rebar)
- with epoxy coating
- Galvanized
- steel
- polymerization
In terms of production and appearance In terms of production and appearance, steel bars are divided into A1, A2, A3, and A4 types, each of which has its own strength and properties. In terms of production, simple reinforcements have lower tensile strengths than other products and belong to the mild steel category. A simple industrial steel bar is a kind of simple steel bar. What is the method of making simple steel bars? Simple steel bars are produced in various stages and are produced using steel ingots. Basically, the base ingot is one of the raw materials from which many sections are made. The production steps for these products are as follows: In the first step, the ingot must be brought to a certain temperature of about 1000 or 1100 degrees Celsius to enter the forming stage. In the next steps, the heated ingots are placed on rollers, their width and diameter are reduced, and their length is increased by special means. In the final phase, we try to get the rods to a certain standard length. After the length of the produced product is determined, it is cut with special scissors and packed. For the manufacture of stiffeners, other actions are required on the product before the packaging stage. What is simple rebar work? Simple steel bars are used in the construction industry and reinforced concrete to increase the concrete's resistance to tensile forces. Of course, this product is also used for building facades, and many may not agree. under construction Simple fixtures are more industrial than buildings. These products are also used in the manufacture of Khamut; that is, the better the quality of this product, the more likely it will be used in the industry. This product is used to make bolts and nuts, nails, and some connections. These types of rebar are sold in two forms, branched and coiled. Coil patterns are available in sizes 5.5, 6.5, 8, 10, and 12, and branch patterns are available in sizes 8 to 40. Another feature of this product is that it is easier to cut and bend; for this reason, it is used more in bending, forging, and welding. Since this product has no tread on the surface, its use for reinforcement is only for screws. Another application of A1 is the use of block beam roofs as thermal reinforcement. To make a complete and comprehensive definition of simple rebar, it is first necessary to know what rebar is. Reinforcing bars are a type of solid section. The metallurgical definition of the fixed cross-section is as follows: The section steel is a long product, and the section is usually round, square, rectangular, or hexagonal, and the diameter is 12-50mm. Since these products can also be in the form of angles, strips, studs, fence posts, and shields, the word "thick" is used to denote the difference in reinforcement. This definition is given in Encyclopedia Britannica, Technical Section, Steel. Therefore, rebar is one of the massive sections with a circular cross-section and has many applications in industry, especially in construction. It would also be good to review the civilian definition of rebar here: Rebars are parts used to reinforce concrete against tension and loads, or for building blocks (building facades). The word rebar, which represents the type of rebar, is actually a combination of reinforcement, meaning rebar, and rod, meaning rod. With these explanations, when one hears the name of the steel bar, its architectural use comes to mind. However, single rebar has other uses. If the simple rebar is in the form of a coil, it can be used as a winding for the branched rebar. Simple steel bars are also used in the construction of industrial shafts. Coiled wire with a smaller or thinner diameter can be used for the production of wire, mesh, barbed wire, welding rod (welding rod), spring, various industrial wires, screws, rivets, etc. In some projects, simple steel bars are also used to make grates and grates. Like plates, simple steel bars are manufactured through a hot rolling process. The steel ingot produced by the steel mill is put into baking furnaces to produce simple steel bars and kept in the furnace until the temperature of the steel rises to more than 1100 degrees Celsius. The bars are 2.1 meters long and have a cross-section of 15x15 cm. Their approximate weight is over 2 tons. The ingot is then mechanized midway through the assembly line. Scrubbing lines consist of rolling stations with very high pressures which cause significant metallurgical changes in the molten steel. During the scrubbing phase, the ingot passes through 6 rolling stations. The diameter of the rollers in the scrubbing path is 530 to 610 mm. Then the beginning of the molten ingot is cut by a guillotine press. After this step, the line continues with 6 intermediate rolling stations with roll diameters from 410 to 470 mm. At this stage, the ingot is also subjected to a stripping operation. The next 6 stops are the final phase. At this stage, the product reaches the desired diameter and leaves the machine at high speed. At the same time, the 12-meter-long rebar is automatically cut, and the rebar is guided for packing. Simple rebar weighs about 2 tons. The coil production steps are as follows:
- Preparation of ingots
- Descaling work (sandblasting is used in some factories)
- Completion of the ingot (machining and testing if necessary)
- Ingot Baking
- Through scrubbing, intermediate rolling, and final processing stations
- Deoxygenation using ultra high-pressure water
- Stretch test
- screw ring
- Weighing and dispatch to warehouse or factory
Generally speaking, there are many factors that affect the price of simple rebar. The most important factor is the quality of the materials used, which greatly affects the price of simple rebar. But other factors should also be considered, such as the state of the economy, including the dollar exchange rate, global steel prices and political conditions. Since simple rebar is used in the construction industry, housing conditions also affect the price of simple rebar.