Product Overview
Commercial Quality (CQ) Cold Rolled Annealed Sheet is a low-carbon steel product engineered for general fabrication, forming, and manufacturing. By subjecting cold-rolled steel to a controlled recrystallization annealing process, we eliminate internal stresses and restore material ductility. This ensures excellent flatness, precise thickness control, and superior surface preparation for subsequent painting, plating, or welding.
Compared to hot-rolled alternatives, our cold-rolled annealed steel provides tighter dimensional tolerances, a smoother surface finish, and highly stable mechanical properties during high-speed stamping and bending.
At Kennen Steel, we customize every order to meet your exact requirements-including steel grades, custom dimensions, international standards, surface oiling, and specialized export packaging.
Technical Specifications
|
Item |
Details |
|
Product Name |
Commercial Quality Cold Rolled Annealed Sheet / Coil |
|
Standard & Grades |
ASTM A1008 CS Type A/B/C, JIS G3141 SPCC, EN 10130 DC01, GB/T 5213 |
|
Thickness Range |
0.3 mm – 3.0 mm (Standard tolerance: ±0.02 mm) |
|
Width Range |
600 mm – 1500 mm (Slitting service available) |
|
Supply Form |
Cut-to-length Sheets / Steel Coils / Slit Strips |
|
Delivery Condition |
Annealed & Skin-passed (Bright / Matte finish) |
|
Edge Condition |
Mill Edge or Precision Cut Edge |
|
Surface Treatment |
Lightly Oiled (standard for rust prevention) or Unoiled (dry) |
Core Advantages
Superior Surface & Tight Tolerances
Our advanced cold-rolling mills ensure a smooth, defect-free matte finish that acts as an ideal substrate for powder coating and electroplating. We maintain thickness tolerances within strict industry standards (up to±0.02 mm upon request) to prevent tooling wear during high-speed stamping.
High Ductility for Consistent Forming
The precise batch/continuous annealing process softens the hard-rolled steel, ensuring excellent elongation. This makes the material highly reliable for general bending ($180^\circ$ flat bend capabilities depending on thickness), profiling, and light drawing without cracking.
Comprehensive Processing & Customization
We don't just supply raw steel; we offer added-value processing:
Decoiling & Leveling: Precision flattening to your specified sheet lengths.
Precision Slitting: Narrow strip processing for specialized tube-making or stamping lines.
Surface Customization: Choice of matte (Roughness Ra 0.6–1.9 μm) or bright finishes, and customized oiling levels.
Standard Export Seaworthy Packaging
To prevent physical damage and corrosion during long-term sea transit, we apply a strict multi-layer protection system:
Inner layer: Anti-rust volatile corrosion inhibitor (VCI) paper and protective plastic film.
Middle layer: High-strength steel protective metal sheets.
Outer layer: Heavy-duty steel inner/outer corner protectors, bound tightly with at least 4 radial and 3 circumferential steel bands.
Moisture-absorbent silica gel packs placed inside every coil/bundle.
Industrial Applications
Our cold rolled annealed sheets are trusted by procurement managers globally across diverse sectors:
Home Appliances: Refrigerator outer shells, washing machine bodies, microwave housings.
Metal Furniture: Office filing cabinets, heavy-duty shelving, toolboxes, steel lockers.
Automotive Components: Non-structural interior panels, seat frames, brackets, and filters.
Electrical Enclosures: Distribution boxes, server racks, control cabinets.
General Fabrication: Stamped metal parts, welded pipes, laser-cut profiles.
Quality Control & Verification Documents
At Kennen Steel, quality is non-negotiable. Every shipment undergoes rigorous quality verification before port delivery:
Dimension Inspection: Continuous thickness, width, and flatness checks.
Surface Inspection: Visual and mechanical scans for pinholes, scratches, or rust.
Mechanical Testing: Yield strength, tensile strength, and elongation testing.
Third-Party Inspection: We fully support inspections by SGS, Bureau Veritas (BV), or TUV at the loading port.
Guaranteed Documentation Provided
Mill Test Certificate (MTC) matching EN 10204 3.1 standards.
Detailed Packing List (including heat numbers, coil IDs, and net/gross weights).
Commercial Invoice & Certificate of Origin (CO, Form E, Form F, etc., to minimize your import tariffs).
FAQ


