Special-shaped steel is the abbreviation for complex and special-shaped cross-section steel. It belongs to a kind of shaped steel and is different from the name of simple cross-section steel.Depending on the process, it can be divided into hot-rolled special-shaped steel, cold-drawn (cold-drawn) special-shaped steel, cold-formed special-shaped steel, welded special-shaped steel, etc.Usually special-shaped steel refers specifically to hot-rolled special-shaped steel.According to customer drawings, cold-drawn steel of various specifications and strong shapes is produced, and the steel ingots are first hot-tied into the drawings, and the strong shapes are drawn and formed with tungsten steel molds for annealing, straightened and shot-blasting cutting.
Specifications of cold-drawn special-shaped steel
Special-shaped steel has many shapes and requirements. It is generally customized according to customer drawings. Generally, the MOQ has certain requirements. In recent years, the demand for special-shaped steel has become greater and greater, because it can reduce a lot of machining and greatly improve work efficiency.
Characteristics of cold-drawn special-shaped steel
Shaped steel is one of the four major varieties of steel (plate, tube, type, wire ).According to the shape of the section, the section steel is divided into simple section steel and complex section steel (special-shaped steel).The former refers to square steel, round steel, flat steel, angle steel, hexagonal steel, etc.; The latter refers to I-beam, channel steel, rail, window frame steel, curved steel, etc. Square steel-square section steel, divided into two types: hot-rolled and cold-rolled; hot-rolled square steel side length 5-250mm; cold-drawn square steel side length 3-100mm. Round steel-round cross-section steel, divided into three types: hot-rolled, forged and cold-drawn. The diameter of hot-rolled round steel is 5-250mm, of which 5-9mm is commonly used as the raw material for drawing steel wire, which is called wire; because it is supplied in discs, it is also called hot-rolled wire strips.Forged round steel is straight and thicker, and is used as a shaft blank.Cold-drawn round steel has a diameter of 3-100 mm and has high dimensional accuracy. Flat steel-steel with a width of 12-300mm, a thickness of 4-60mm, a rectangular cross-section and slightly pure edges.Flat steel can be finished steel, it can also be used as blanks for welded pipes and thin blanks for laminated thin sheets. Angle steel-there are two types of equal angle steel and unequal angle steel.The specifications of angle steel are expressed in the dimensions of side length and side thickness.The angle steel specifications usually produced are No. 2-20, which is the number of centimeters of side length.For example, No. 5 equilateral angle steel refers to angle steel with a side length of 5cm (50mm).The same horn steel often has 2-7 different side thicknesses.