Prime Quality Hot Rolled Steel Coils

• Warranty: 1
• Standard: ASTM, JIS, GB, AISI, DIN, BS, Promisis
• Certification: Promisis
• Model NO.: Q355B, SAE 1006, Q215B, Q235B
• Surface Treatment: Polished
• Technique: Hot Rolled
• Application: Ship Plate
• Edge: Mill
• Stock: Stock
• Transport Package: Exporting Standard Package
• Specification: 0.75-2mm*1219/1250
• Trademark: PromiSiS
• Origin: China
• HS Code: 720839
• Production Capacity: 20000mts

Product Description

Hot - rolled steel coil is a type of steel product that is produced through a hot - rolling process. Hot rolling involves heating the steel billet or slab above its recrystallization temperature and then passing it through a series of rollers to reduce its thickness and shape it into a coil form. The temperature during hot rolling is typically around 1700 - 1800°F (927 - 982°C).

• Surface Quality: Hot - rolled steel coils generally have a scaled surface. This is because during the hot - rolling process, oxides form on the surface of the steel due to the high temperature and exposure to air. The scale can vary in thickness and appearance. However, for many applications where the surface finish is not a critical factor, such as in construction and some heavy - duty machinery parts, this is acceptable.
• Mechanical Properties: Hot - rolled steel coils have good ductility. The hot - rolling process helps to align the grains in the steel, which gives it the ability to be bent and formed without cracking easily. The yield strength and tensile strength of hot - rolled steel depend on the specific grade of steel. For example, a common structural hot - rolled steel coil might have a yield strength of around 250 - 350 MPa and a tensile strength of 400 - 550 MPa. These properties make it suitable for applications where the steel needs to withstand certain loads and forces.
• Dimensional Tolerances: There are certain dimensional tolerances associated with hot - rolled steel coils. The thickness tolerance is usually in the range of plus or minus a few percentage points of the specified thickness. The width tolerance is also specified, and it can vary depending on the manufacturing standards and customer requirements.

 

4. Applications

 

• Construction Industry: Hot - rolled steel coils are widely used in the construction of buildings, bridges, and other infrastructure. The coils can be cut and formed into structural members such as beams, columns, and roof trusses. For example, in the construction of a multi - storey building, hot - rolled steel columns provide the necessary vertical support to carry the load of the floors and the building's superstructure.
• Automotive Industry: In the automotive sector, hot - rolled steel coils are used for manufacturing various components. They are used to make parts like chassis components, wheel rims, and some body parts where high strength and formability are required. The ability of hot - rolled steel to be formed into complex shapes allows automotive manufacturers to produce parts with efficient designs.
• Pipe and Tube Manufacturing: Hot - rolled steel coils serve as the raw material for the production of pipes and tubes. The coils are first formed into cylindrical shapes and then welded or seamless processes are used to create the final pipe or tube products. These pipes and tubes are used in a wide range of applications including plumbing, oil and gas transportation, and structural applications.