RUNYING Steel Group is a leading Tangshan manufacturer and direct export supplier of high-precision Cold Rolled Steel Coils and Strips (CR Coil). Manufactured from prime hot-rolled coils through continuous pickling, cold reduction, annealing, and temper rolling, our CR coils provide superior surface finish, tight dimensional tolerances (±0.02mm), and exceptionally uniform mechanical properties.

Compliant with major international standards including JIS G3141, EN 10130, ASTM A1008, and GB/T 5213, our precision cold-rolled steel is widely used for automotive stampings, home appliance casings, electrical control cabinets, and precision machinery components.

Technical Specifications (Cold Rolled Steel Coil / Sheet)

Key Performance Advantages

1, Ultra-Precise Dimensional Tolerances:

 · Advanced rolling control guarantees thickness tolerances within ±0.02mm, ensuring flawless performance in high-speed automated stamping lines.

2, Premium Scale-Free Surface Quality:

 · Mirror-smooth or dull surface (Ra ≤ 0.8um) free of scale, rust, or defect, perfectly optimized for electroplating, painting, and powder coating.

3, Enhanced Mechanical & Formability Properties:

 · Uniform hardness distribution (HRB 40-75) combined with a 15% improvement in post-annealing ductility allows extreme bending and deep drawing without cracking.

4, Eco-Friendly & Downstream Coating Ready:

 · 100% recyclable steel substrate, chemically cleaned and ready for downstream hot-dip galvanizing (GI) or galvalume (GL) secondary processing.

Industry Application Matrix

 · Automotive Industry: Outer body panels, door frames, structural chassis components, and internal reinforcements.

 · Home Appliance Manufacturing: Refrigerator side panels, air conditioner casings, washing machine drums, and microwave enclosures.

 · Electronics & Electrical: High-precision control cabinets, server chassis, transformer housings, and junction boxes.

 · Building Construction: Ceiling suspension systems, lightweight structural studs, dry-wall partition profiles, and door frames.

 · Machinery & Hardware: Motor enclosures, hydraulic tubing, precision stampings, and steel furniture components.

Seaworthy Export Packaging & Logistics

 · Export Anti-Rust Packaging: Anti-rust paper (VCI film), inner plastic sheet, outer galvanized steel wrapping, steel corner protectors, and heavy-duty steel strapping.

 · Coil Loading Options: Eye-to-Sky or Eye-to-Wall packing configurations secured on reinforced wooden skids for containerized or breakbulk shipping.

 · Direct Export Port: Fast loading and vessel dispatch via Tianjin Port, China.

Request Your Cold Rolled Steel Coil Quote Today

Get direct factory mill quotes, stock availability, and EN 10204 3.1 MTC documentation within 24 hours from RUNYING Steel Group:

 · Email Sales: admin@tsrysteel.com    

 · WhatsApp: +86 15176700707

 · Official Website: http://www.tsrysteel.com

 · Explore Products: Browse Our Full Industrial Steel Catalog →

$\text{Ra}\le 0.8\mu \text{m}$$\pm 0.02\text{mm}$