Call Us Now
+86 182 9791 0985
cold rolled steel sheet & coil
cold rolled steel sheet & coil
Cold-rolled steel sheet and coil are high-precision, smooth-surface steel products created by cold-processing hot-rolled steel at room temperature. Following pickling to remove oxide scale, the material undergoes roller passes—often interspersed with annealing steps—to achieve tighter thickness tolerances (typically ±0.04 mm) and a smooth finish. This process also work-hardens the steel, boosting tensile strength up to 20%, although ductility is somewhat reduced.
Cold rolled sheets (CR sheets) are ideal for applications requiring clean, paint-ready surfaces such as automotive panels, appliance housings, and furniture components.
Cold rolled coils (CRC) provide the same high-quality steel in coil form, enabling flexible slitting, cut-to-length, and stamping operations for industrial fabrication.
Specifications of Cold Rolled Steel Sheets & Coils
| Parameter | Cold Rolled Steel Sheet | Cold Rolled Steel Coil |
|---|---|---|
| Thickness (mm) | 0.3 – 3.0 | 0.3 – 3.0 |
| Width (mm) | 600 – 1500 | 600 – 1600 |
| Length (mm) | 1000 – 4000 (customizable) | Coil form – continuous length |
| Coil Weight (tons) | N/A | 3 – 15 |
| Surface Finish | Bright, Matte, Dull, Oiled | Bright, Matte, Dull, Oiled |
| Steel Grades | SPCC, DC01, ASTM A1008, Q195–Q235 | SPCC, DC01, ASTM A1008, Q195–Q235 |
| Standards | JIS G3141, EN 10130, ASTM A1008 | JIS G3141, EN 10130, ASTM A1008 |
| Tolerance | Thickness ±0.02–0.05 mm, Width ±2 mm | Thickness ±0.02–0.05 mm, Width ±2 mm |
| Surface Treatment | Oiling, Passivation, Skin-pass, Dry | Oiling, Passivation, Skin-pass, Dry |
| Processing Options | Cut-to-length, Shearing, Bending | Slitting, Recoiling, Leveling |
| Packaging | Wooden pallet, steel straps, moisture-proof wrapping | Standard export coil packaging with edge protectors and VCI paper |
Quality Certification
Applications of Cold Rolled Steel
Construction: Used in interior panels, wall studs, and framing systems that require a clean finish and precision fit.
Automotive: Applied in body panels, inner structural components, and reinforcement parts due to its formability and surface quality.
Infrastructure: Suitable for electrical enclosures, access panels, and precision-formed components in public utilities.
Oil & Gas: Used in control cabinets, housings, and equipment panels in refineries and pipeline systems.
Heavy Equipment: Fabricated into protective covers, cab panels, and bracket systems requiring strength and dimensional stability.
Household: Commonly found in appliances, metal furniture, kitchen equipment, and storage systems.
More Details About Zhaojian Cold Rolled Steel Sheets & Coils
Key Features
Precision Manufacturing
Tight thickness tolerances and smooth surface finishes are ensured through advanced cold rolling equipment and strict quality control.
Custom Processing
We offer slitting, cutting, and surface treatments in-house, tailored to meet diverse project requirements efficiently.
Large-Scale Capacity
Our factory supports bulk orders with fast turnaround, maintaining consistent quality across every coil and sheet.
Cold Rolled Steel Sheet & Coil Manufacturing Process
- Pickling: Hot rolled coils are cleaned in acid baths to remove mill scale and surface impurities, preparing them for cold rolling.
- Cold Rolling: The descaled steel is passed through multi-stand mills at room temperature to reduce thickness, improve surface finish, and increase strength through work hardening.
- Annealing: To restore ductility and relieve internal stress, the cold-rolled steel is heat-treated in batch or continuous annealing furnaces.
- Skin Pass / Temper Rolling: A light rolling pass improves flatness, surface texture, and minimizes yield-point elongation issues.
- Cleaning & Surface Treatment: Residual oils and particles are removed; optional treatments like oiling, passivation, or light coating are applied for corrosion protection.
- Finishing: Material is cut to length or slit to width as required. Final inspection ensures dimensional accuracy, surface quality, and mechanical performance.
FAQ
Cold-rolled sheets offer better surface finish, tighter tolerances, and higher strength, but are generally limited in thickness compared to hot-rolled sheets.
We typically supply cold-rolled steel in thicknesses ranging from 0.3 mm to 3.0 mm. Customized thicknesses are available upon request.
Delivery typically takes 15 to 35 days, depending on order volume and processing requirements. We also support urgent orders when possible.
