Odessa circle calibrated steel 6-350 mm st20, st45, 40X, R6M5, 20X13, 08X18H10T (Metallobaza)

Outwardly, a calibrated circle is similar to an ordinary steel bar, only more even, accurate. In fact, he is what he is - a calibrated round bar. A simple bar, even made according to state standards, allows quite significant deviations in geometry, in surface accuracy. Accordingly, it is less demanding in terms of packaging, storage, and transportation. The circle calibrated is used as preparation for details of mechanisms, for bolts, hairpins, shaft and other products. Therefore, the requirements for the accuracy of its execution are higher. It is made from the same hot-rolled bar by additional rolling or drawing. At the same time, special attention is paid to the quality of the geometry, the absence of deviations. The raw material can be both carbon and alloy steel, including stainless steel. The same requirements are imposed on the quality of raw materials as in the manufacture of conventional bars. In some cases, the surface of the circle is additionally polished, as a result, an almost mirror surface is obtained. This variety is popularly called "silver". However, in any case, standards require that products be protected against corrosion by oil. An exception is made only for a circle made of stainless steel; it is also possible to do without oil by agreement with the customer. Features of manufacturing and delivery You can buy a calibrated circle of various sizes from steel of various grades. The diameter varies from 3 to 270 mm or more. With a size of up to 5 mm (and upon agreement with the customer - up to 25 and even more), the circle can be supplied in coils. If the diameter exceeds this figure, then it is customary to manufacture rolled products in bars of measured and random lengths. The bars are supplied bundled, each bundle must be marked. In particular, the diameter of the bar, steel grade, type of manufacturing accuracy (high, increased, ordinary accuracy) are indicated. The length of the bars can be from 1.5 to 6.5 m, depending on the type of steel. If necessary, you can buy a calibrated circle, cut into pieces of the desired length. It is worth remembering that the state standard assumes the absence of burrs and bends. If the process requires the use of special steel grades and non-standard types of anti-corrosion lubricant, then this should be discussed with the supplier at the order stage. Circle steel - a common product of rolled metal, manufactured in the form of a rod with a circular cross section. The official name is circular steel rolled metal. The release of the calibrated circle is controlled by GOST 7417-75, which regulates the production of products with a circle diameter from 3 to 100 mm. The form of release of the product depends on the diameter of the finished rolled products. Circles up to 5 mm are produced, as a rule, in coils. If the diameter is more than 5 mm, then the products have the form of bars. Depending on the purpose of the final product, the calibrated circle can be made from carbon, structural, low-alloy, or other types of steels. The use in the composition of various alloying elements, such as nickel, chromium, copper, makes it possible to give the steel greater strength, oxidation resistance, and reduces the brittleness of the product. For a calibrated wheel, a special production technology is provided by cold drawing through a calibrated hole, which allows metallurgists to significantly improve physical and mechanical characteristics, make the finished product as shock-resistant and resistant to any external influence as possible. Calibrated elements are characterized by extremely precise geometric parameters and high surface quality. Depending on the purpose, the calibrated wheel may be subject to additional processing, as a result of which it turns out to be matte or polished. Circular rolled steel is used in many industrial and manufacturing areas, acting as an independent product, or as a blank for the subsequent production of shaped steel and other steel parts. Stainless steel rods, round blanks are widely used in the automotive, aviation, shipbuilding, woodworking industries, in design and outdoor advertising. The circle calibrated is applied to reinforcing of reinforced concrete: resistance to adverse conditions does it irreplaceable at construction. It is widely used in laying foundations and piles, when creating ceilings. If the product is made from structural steel grades with a low percentage of carbon and ligature, then it has no restrictions on weldability. It is an ideal material for the manufacture of scaffolding, barriers, all types of supports and frames. The circle calibrated steel is chosen for designs of the increased accuracy and durability. A calibrated stainless steel wheel is even suitable for creating decorative elements: balcony railings, stairs, bridges. The calibrated circle is one of the varieties of rolled metal products. It is made in the form of a rod with different diameters and lengths, and has a circle in the transverse section. However, in any case, the standards require that the products be protected with oil from corrosion. An exception is made only for a stainless steel circle; oil can also be dispensed with by agreement with the customer.

Features of production and delivery

You can buy a calibrated circle of various sizes made of steel of various grades. The diameter varies from 3 to 270 mm and more. With a size of up to 5 mm (and with the agreement of the customer - up to 25 and even more), the circle can be supplied in coils. If the diameter exceeds this figure, then it is customary to manufacture rolled products in rods of measured and non-measured length.

The rods are supplied bundled, each bundle must be marked. In particular, the diameter of the rod, steel grade, type of manufacturing accuracy (high, increased, normal accuracy) are indicated.

The length of the rods can be from 1.5 to 6.5 m depending on the type of steel. If necessary, you can buy a calibrated circle cut into pieces of the required length. It is worth remembering that the state standard assumes the absence of burrs and bends. A calibrated steel circle is made by cold rolling or drawing. It is used to turn various parts on lathes from this round blank. Various tools are made of steel: screwdrivers, wrenches and adjustable wrenches. Rods are made from one and a half to six and a half meters long and from three to two hundred and seventy millimeters in diameter. If the diameter of the circle is up to five millimeters, it is packed in coils. Circles with bends and burrs are not allowed in production. The surface must be smooth. The circles must be even and of the same length. When working with circles, protect your eyes with special glasses and your hands with protective gloves. This material is easy to process. It can be sawed, drilled and welded. The circles are packed in coils of several pieces, of the same length. Steel is a very strong and durable material. Products made of this metal will serve you for many years. The circle is called calibrated because it is very accurately measured in length and diameter. Higher requirements for accuracy are imposed on them in comparison with ordinary circles. Some circles are additionally polished in order to obtain a mirror surface. The surface of the circles is coated with oil to protect against corrosion. In mechanical engineering, the railway industry and shipbuilding, a large number of different parts are made of steel. The price of circles depends on the grade of steel from which they are made, the presence or absence of a mirror polished surface and the amount of impurities in the steel itself. Circles are used in construction and at home as supports for fences and railings. The quality of the surface of the circles is divided into three types of accuracy. A - medium, B - high and B - an increased level of accuracy of the surface of the circle. In the diameter of future circles, minor deviations are allowed within the range from zero point one to zero point three tenths of a millimeter. You should buy steel circles only from trusted manufacturers to avoid low-quality and defective goods.