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

The steel circle is the most widespread and demanded type of metal rolling today. It is used for various purposes. Pipes and hardware are made from a steel circle: washers, nuts, rivets. This rolled metal is used for the production of metal structures, for reinforcing and strengthening concrete. The universal geometric shape allows the use of round rolled metal products in many sectors of mankind. The most demanded circle is 20x13, which can be ordered on the company's website What is a steel circle A steel circle is a metal-roll of a round shape and a solid section. In its appearance, like a hexagon, a metal strip, and also a square, it belongs to high-quality rolled metal. What is a steel circle What is a steel circle Due to the special profile and solid section, the steel circle has such properties as increased strength and wear resistance. In this regard, this rolled metal is especially popular in the manufacture of protective elements for balconies, stairs, etc. What is steel circle made of? The main material for the manufacture of a steel circle is steel of various types. It can be either low-alloy or high-alloy steel. The length of metal products directly depends on the type of steel. What is steel circle made of? What is steel circle made of? Most often, high-quality structural steel grades 08, 25, 40, 60 or low-alloy steel 09G2, 10HNDP, etc. are used for the manufacture of a steel circle. Often, in order to protect metal products from corrosion, a layer of zinc is applied to them during the manufacturing process. Galvanized steel circles are in no less demand. Especially they are needed when creating grounding systems. Marking, classification and production technology Marking, classification and production technology In addition, the so-called complex alloy steel can be used for the manufacture of stainless wheels. The main feature of this type of steel is corrosion resistance. Marking, classification and production technology The marking of steel circles is usually based on their diameter, for example "Circle 20". However, often next to the diameter of the product, manufacturers also indicate the grade of steel from which the steel circle is made. Circles with the letter "A" have the most accurate dimensions. We are talking about the same diameter of the rods throughout. The letter "B" indicates that the steel circle may have a slight error, both in length and in diameter. Steel circle: what it is, how and where it is used, marking Depending on the production technology, forged, hot-rolled and cold-rolled steel circles are distinguished. In the first variant, the formation of a round shape of the bars is carried out by a forging machine. In the second and third cases, special rolling machines are used to form blanks. At the same time, the main difference between cold-rolled technology and hot-rolled technology is the absence of the need to heat the metal to high temperatures. Steel circle is a type of round metal products (products obtained at a rolling mill), which is used as a raw material in the production of pipes, as a reinforcing element in metal structures, for blanks of various parts (such as springs, rivets, washers, etc.). Can be obtained by hot or cold rolling. This type of semi-finished steel is produced in the form of metal bars and has a circular cross section. The steel circle has a number of advantages, namely, products from it do not corrode, can be used for a long period, and the products are resistant to mechanical stress. Hot-rolled circle (obtained as a result of hot rolling) produced in accordance with the requirements of GOST 2590-88 can be of different accuracy, it is divided into three classes: A (high), permissible deviations from the specified parameters can be +0.3mm to -0.9mm); B (increased), the deviation from the norm can range from +0.6mm to -2.0mm B (ordinary), at which the final diameter is possible in the range from +0.8mm to -4.0mm. Depending on the quality of the steel, the length of the metal bar may vary. A steel circle made of ordinary carbon and low alloy steel is usually made in frames from 2 to 12 meters; if it is high-quality carbon and alloy steel, then the length is from 2 to 6 meters; low-alloy steel bar - from 1 to 6 meters. At the request of the customer, the length of the workpiece can be from 2 to 24 meters. 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.