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Help CenterSteel Coil & Strip & Hot Rolled Steel Coil，Q235B、SS400、Q355B/C/D、S355JR
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Hot-rolled Steel Coil
1. Definition & Production Process
Hot-rolled steel coil refers to casting slab heated to 1100-1300℃, rolled into strip steel through rough rolling and finish rolling units, then cooled and coiled into coiled steel products.
Production process: Slab heating → Rough rolling → Finish rolling → Laminar cooling → Coiling → FinishingFeatures: Rolled at high temperature with oxide scale on surface, good toughness and easy processing.
2. Common Specifications
Thickness: 1.5-20mm
Width: 1000-2000mm
Coil weight: 10-30 tons
Inner diameter: 762mm
Marking: Thickness × Width × Weight Material
3. Common Materials & Standards
Carbon steel: Q235B, SS400
Low alloy high strength steel: Q355B/C/D, S355JR
Special steel: SAPH400, Q345R, X42, X52, X60, X70
4. Performance Advantages
Advantages: High strength, good toughness, excellent welding, bending and cutting performance, cost-effective.Disadvantages: Rough surface, ordinary dimensional accuracy, need oxide scale removal.
5. Main Applications
Construction steel structure, mechanical equipment base, automobile chassis parts, pressure vessels, steel pipes, container base plates, guardrails and other structural components.
6. Difference between Hot Rolled & Cold Rolled Steel Coil
Production: Hot rolling at high temperature; Cold rolling processed from hot rolled raw material at room temperature
Surface: Hot rolled rough with oxide scale; Cold rolled smooth and bright
Thickness: Hot rolled thicker; Cold rolled thin
Price: Hot rolled lower; Cold rolled higher
Usage: Hot rolled for structural parts; Cold rolled for precision appearance parts
7. Purchasing Notes
Confirm thickness, width, material, execution standard, coil weight, surface quality and delivery condition.
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