Specification Parameters

Thickness is usually 1.2-25mm, width 1000-2000mm, length is cut according to requirements (generally 2-12m), and single sheet weight is relatively light (several kilograms to several hundred kilograms)

Thickness 1.2-25mm, width 1000-2000mm, coil inner diameter is mostly 508mm or 610mm, single coil weight 10-30 tons, length can be cut according to requirements

Uses

Directly used in scenarios requiring single plates such as building structural parts, mechanical part processing, and container manufacturing

Used as raw materials for subsequent processing (such as cold rolling, galvanizing), or used in similar scenarios as hot-rolled steel after being cut into plates, suitable for batch continuous production

Application Scenarios

Floor slabs and walls in buildings, machine bases and cover plates in mechanical manufacturing, small containers, etc.

Raw materials for subsequent rolling processes in steel plants, raw materials for batch stamping parts in automobile factories and home appliance factories, coil direct supply projects in large-scale projects

Material

Consistent with hot-rolled coils, covering low-carbon steel (Q235), low-alloy steel (Q355), automotive steel (SPFH series), etc.

Same as hot-rolled steel, with the same material range. Due to the consistent production process, there is no essential difference in chemical composition and mechanical properties

Style

Flat plate shape, with slight scale possibly on the surface, and flat edges (after cutting)

Coil shape, in the form of continuous coils, the outer layer may have protective packaging to avoid wear during transportation

Production Process Flow

Consistent with the first half of hot-rolled coils: billet heating → rough rolling → finish rolling → laminar cooling → cutting into flat plates

Billet heating → rough rolling → finish rolling → laminar cooling → coiling into coils, one less cutting process than hot-rolled steel

Quality Control

In addition to conventional mechanical property testing (yield strength, elongation, etc.), additional control of flatness and cutting dimensional tolerance (±0.15-0.05mm) is required

Focus on controlling coil shape (such as camber, tower shape) and thickness uniformity of the same coil; mechanical property testing is consistent with hot-rolled steel

Usage and Installation Steps

Cut, weld or bolt according to needs, directly assemble into the structure, and pickling can be carried out when it is necessary to clean the surface scale

Need to be uncoiled by an uncoiler first, then cut into the required size for use; pre-installation treatment is the same as hot-rolled steel

Other Details

Single sheet storage takes up a lot of space, transportation needs to prevent bending, suitable for small batch and multi-specification needs

Coil storage saves space, transportation efficiency is high (single coil weight is large), suitable for mass and continuous production needs