Product Introduction

Hot rolled coil is a steel coil produced through a high-temperature rolling process. It is made by heating, descaling, roughing, finishing, and coiling carbon steel. Hot rolled coils are known for their high production efficiency and lower cost. With a rough surface and moderate mechanical properties, they are widely used in construction, machinery manufacturing, automobile chassis, energy pipelines, and home appliance substrates.

Production Process

The production of hot rolled steel coils can be divided into three main stages:

• Heating: Steel billets are placed in a high-temperature furnace to reach a suitable rolling temperature.
• Rolling: The billet is pressed multiple times in a rolling mill to achieve the desired thickness and width.
• Cooling: The steel is then cooled using water or air to reach the desired hardness and strength.

Specifications Parameters

Application Scenarios

• Construction & Infrastructure: Used for steel structures like H-beams, I-beams, and profiles for bridges and high-rise buildings.
• Machinery Manufacturing: Structural components for engineering machinery, such as excavator crawler plates and crane booms.
• Automobile Industry: Chassis and frames, such as truck beams and trailer beams.
• Energy & Pipeline: Large-diameter welded pipes for oil and gas transportation and steel plates for wind power towers.
• Home Appliances: Internal parts like washing machine shells, refrigerator back plates, and hardware tools.
• Transportation: Railroad vehicle parts like bottom plates of train cars and shipbuilding components like internal bulkheads and deck accessories.

Difference with Cold Rolled Coil

• Processing Technology: Hot rolling is done at high temperatures, while cold rolling is done at room temperature.
• Application Range: Hot rolled coils are typically used in construction, machinery manufacturing, and energy pipelines, while cold rolled coils are used in automotive applications and small appliances.
• Mechanical Properties: Cold-rolled coils generally have higher strength and hardness, while hot-rolled coils offer better toughness and ductility.
• Surface Quality: Cold-rolled steel has a smoother surface, while hot-rolled steel has a rougher, oxidized surface.
• Price: Hot rolled steel is generally more affordable due to its simpler processing and lower production cost.

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