Authentic Steel manufactures and exports high-precision cold rolled steel coils (CR coils) conforming to JIS G3141 SPCC, EN 10130 DC01, and DIN 1623 St12 standards. Produced by room-temperature cold reduction of pickling hot-rolled steel coils followed by continuous hydrogen bright annealing and temper rolling (skin-pass), our CR coils feature high surface cleanliness, exceptional thickness uniformity, and precise mechanical properties.
Uncoated cold rolled steel coils serve as the primary raw material foundation for high-end metal manufacturing, precision stamping, and automated sheet metal fabrication. Engineered with a smooth matte surface roughness (Ra) optimized for paint and plating mechanical lock, SPCC/DC01 coils deliver outstanding formability, sharp bending consistency, and deep-drawing behavior without yield point elongation streaking.
Standard Steel Grades: JIS G3141 SPCC (Commercial Quality), SPCD (Drawing Quality), SPCE (Deep Drawing Quality); EN 10130 DC01, DC03, DC04; DIN 1623 St12; ASTM A1008 CS Type A/B
Thickness Dimension Range: 0.10 mm to 2.50 mm
Coil Width Availability: 600 mm, 914 mm, 1000 mm, 1200 mm, 1219 mm, 1250 mm, 1500 mm, or custom precision slitted narrow strips
Surface Temper Finish Status: Bright Smooth (B), Dull Matte Finish (D) for optimized lubricant retention during press operations
Surface Oiling Options: Lightly Oiled (DOS), Medium Anti-Rust Oiled, Dry (Un-oiled upon request)
Mechanical Temper States: Annealed Commercial Grade, Full Hard State, Skin-Passed Temper Rolling
Applicable Global Standards: JIS G3141, EN 10130, ASTM A1008, GB/T 5213, DIN 1623
Home Appliance Housings & Structural Frames: Processed into refrigerator exterior side panels, washing machine cabinets, microwave oven enclosures, and air conditioner outer shells before electrostatic powder coating.
Automotive Inner Panels & Component Stamping: Used for internal vehicle reinforcements, door inner frames, filter housings, brackets, and deep-drawn structural stampings.
Office Furniture & Commercial Shelving: Formed into steel filing cabinets, locker doors, commercial display racks, office desk pedestals, and library shelving.
Substrate for Downstream Metal Coating: Serves as the prime base steel substrate for continuous hot-dip galvanizing lines (GI), continuous electro-galvanizing lines (EG), and tinplate (ETP) packaging steel mills.
Ultra-Tight Dimensional Tolerance & Flatness: Utilizing automated tension leveling and hydraulic thickness control (AGC) mills, our cold rolled coils maintain consistent gauge and flatness, preventing die jamming or uneven clearance during high-speed stamping.
Superior Surface Cleanliness for Post-Plating: Bright hydrogen annealing eliminates surface carbon residues and oil stains, ensuring high coating adhesion during electroplating, painting, or powder coating.
Export-Grade Rust-Inhibitive Packaging: Sealed with heavy-duty VCI paper, inner plastic membrane, galvanized steel drum covers, edge guards, and high-tensile steel banding on sturdy wooden skids to prevent transit moisture oxidation.
