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What is hot-rolled flat steel?

What is hot-rolled flat steel?



1. Concept of hot-rolled flat steel:
Hot-rolled flat steel is a general-purpose potential-rolled long steel with a rectangular cross-section. Its specifications are expressed in millimeters of thickness * width, and steel flat bar can be finished steel for components, ladders, bridges, and fences.
flat steel can also be used as a billet for welding clinging steel and a slab for stacking thin sheets. (Material: Q215, Q235), Executive standard: GB704-1988 instead of GB704-83, this standard is applicable to general-purpose hot-rolled flat steel with a thickness of 3~60mm, a width of 10~200mm, and a rectangular cross-section.
1.1 Delivery status: steel flat bar is delivered in straight bars.
1.2 Measurement method: steel flat bar with fixed length and door length shall be delivered according to the theoretical weight.
2. Main features of hot-rolled flat steel:
Hot-rolled flat steel is one of the four major varieties of steel (plate, tube, profile, wire). According to the section shape, the section steel is divided into simple section steel and complex section steel (special section 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.
2.1 Square steel—steel with square section, divided into hot-rolled and cold-rolled; hot-rolled square steel has a side length of 5-250mm; cold-drawn square steel has a side length of 3-100mm.
2.2 Round steel—round 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 rod; Disk supply is also called hot rolled wire rod. The forged round steel is straight and thick and is used as a shaft blank. The diameter of cold-drawn round steel is 3-100 mm, and the dimensional accuracy is high.
2.3 flat steel – steel with a width of 12-300mm, a thickness of 4-60mm, a rectangular section, and a slight edge. flat steel can be finished steel, and can also be used as blanks for welded pipes and thin slabs for stacked sheets.
2.4 Angle steel – There are two kinds of angle steel with equal edges and angle steel with an unequal edge. The specification of angle steel is expressed by the dimensions of side length and side thickness. The specifications of angle steel usually produced are 2-20, that is, the number of centimeters on the side. For example, No. 5 equilateral angle steel refers to angle steel with a side length of 5cm (50mm). The same horn often has 2-7 different side thicknesses.
3. The weight calculation formula of flat steel:
Calculation unit: kg/m
Calculation formula: W=0.00785×b×d
Formula description: b=side width, d=thickness mm
Calculation example: For flat steel with a side width of 40mm and a thickness of 5mm, find the weight per m. Weight per m=0.00785×40×5=1.57kg
4. Use of flat steel:
flat steel can be produced with fixed thickness, fixed width, and fixed length according to user needs, which reduces cutting for users, saves processes, reduces labor and material consumption, and also reduces processing loss of raw materials, saving time, labor, and saving. material. Products have been professionally used in steel structure manufacturing, machinery manufacturing, automobile industry, mining machinery, hoisting machinery, and other industrial materials. Glory Rail supplies steel flat bars for crane rail applications. the flat bar is used in overhead crane rail. the size include 30*40, 30*50, 40*60, 40*70 etc.

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