Types of square steel and factors affecting prices
Square steel refers to a square material hot rolled out by square billet, or by round steel through the cold drawing process, pulled out of the square material. The theoretical weight calculation formula of square steel: side length * side length *0.00785=kg/m. Square steel is a kind of bar, different from hollow square pipe, it is solid. It is generally made of hot rolling, deep processing can be made into round steel, anchor bolts and so on. To make tracks.
Square steel is solid, bar; Different from square pipe, hollow, belongs to pipe.
Steel: is the ingot, billet or steel through the pressure processing to make the required various shapes, sizes and properties of the material. Steel has a wide range of applications and varieties. According to the different section shape, steel is generally divided into profiles, plates, pipes and metal products four categories; In order to facilitate the organization of steel production, order supply and management, it is divided into heavy rail, light rail, large steel, medium steel, small steel, steel cold-formed steel, high-quality steel, wire, medium thickness steel plate, thin steel plate, electrical silicon steel sheet, strip steel, seamless steel pipe steel, welded steel pipe, metal products and other varieties.
Type of square steel
1. According to the production process is divided into hot rolled square steel, cold drawn square steel
Square steel can be divided into hot rolled and cold rolled two kinds; The side length of hot-rolled square steel is 5-250㎜, and the side length of cold-rolled square steel is 3-100㎜
(1) Hot rolled square steel: refers to rolled or processed into a square cross-section of steel
(2) Cold drawn square steel: cold drawn steel forged in a square shape. Cold drawn steel is at room temperature, to exceed the original steel yield point strength of the tensile stress, forcing the tensile steel, so that the steel has plastic deformation to improve the strength of the steel yield point and save steel for the purpose of high accuracy, smooth surface, saving materials and other advantages.
2. According to the raw materials used, it is divided into slotted square steel and seamless square steel
(1) slotted square steel is welded together by steel plates to make square steel pipes.
(2) Seamless square steel is made of seamless steel pipe. Its pressure resistance is much greater than that of the slotted steel pipe.
3. Stainless steel square steel: It is a stainless steel bar that is square or rectangular in cross-section. It has the characteristics of simple use, simple processing, relatively light weight, high temperature resistance, saving and corrosion resistance. Stainless steel square steel can also be divided into: stainless steel acid white square steel, hot rolled stainless steel square steel and cold rolled stainless steel square steel three, stainless steel square steel is mainly used in fine decoration.
Application of square steel
1. Stainless steel square steel: mainly used in railway, construction, shipbuilding and machinery industries, specifically used in the construction of the base ceiling, structural support manufacturing of mechanical products, the transfer layer of the wall and the construction of ships and railways.
2. Cold drawn square steel can be used in automotive industry, hardware tool industry, machining manufacturing industry and textile machining.
3. Hot rolled square steel: making components, escalators, Bridges and fences; Slabs used for welding steel billets and laminated sheet rolling; It is made into hoop iron material.
Square steel price factors
1. Material: 316, 304, Q235, Q235B (316>304>235)
2. Rolling method: cold-drawn square steel price > hot-rolled square steel price