Product Overview
High-Precision Stainless Steel Coils & Slit Strips
Qiaodi Steel is a premier supplier of hot-rolled and cold-rolled stainless steel coils, precision strips, and foil. Operating directly out of Wuxi—the center of China’s stainless steel industry—we maintain direct partnerships with top steel mills (such as TISCO, BAOSTEEL, and ZPSS) to deliver high-purity, defect-free material with tight dimensional tolerances.
Whether you need wide coils for continuous stamping or precision-slit narrow strips with custom deburred edges, we provide complete coil processing services, including precision slitting, cut-to-length, paper interleaving, and protective PVC coating according to ASTM A240, EN 10088, and JIS G4305 standards.
Popular Material Grades
- Austenitic Series (304 / 304L / 316 / 316L)
- Characteristics: Superior corrosion resistance, excellent formability, and deep-drawing properties. Widely used for kitchenware, tubes, stamped components, and heat exchangers.
- Ferritic Series (430 / 410S / 409L)
- Characteristics: Cost-effective magnetic grades with high thermal conductivity. Ideal for automotive exhaust systems, household appliances, and decorative trims.
- Martensitic & Heat-Resistant (410 / 420 / 310S)
- Characteristics: High hardness, wear resistance, and high-temperature oxidation resistance for cutlery, spring parts, and industrial furnace components.
- Duplex Stainless Steel (2205 / 2507)
- Characteristics: Exceptional mechanical strength paired with high resistance to pitting and stress corrosion cracking in marine and chemical environments.
Technical Specifications & Dimensions
Technical Specifications & Slitting Capabilities
| Parameter | Cold Rolled (CR) Coils & Strips | Hot Rolled (HR) Coils |
| Thickness Range | 0.05 mm – 3.0 mm (Precision Thin Strip Available) | 3.0 mm – 16.0 mm |
| Standard Coil Widths | 1000mm, 1219mm (4ft), 1250mm, 1500mm | 1250mm, 1500mm, 1800mm, 2000mm |
| Slitting Width (Strips) | Custom Slitting: Down to 5 mm minimum width | Custom Slitting / Edge Trimming |
| Coil Inner Diameter (ID) | 508 mm / 610 mm | 508 mm / 610 mm |
| Surface Finishes | 2B, BA, No.4 (Hairline), Mirror (8K), TR (Hardness) | NO.1 (Pickled & Annealed) |
| Edge Options | Mill Edge, Slit Edge, Round Edge, Deburred Edge | Mill Edge, Trimmed Edge |
| Processing Services | Precision Slitting, Rewinding, Paper Interleaving, PVC Film | Decoiling & Cut-to-Length, Edge Trimming |
Custom Processing & Value-Added Services
- Precision High-Speed Slitting: Equipped with advanced slitting lines capable of tight width tolerances ($\pm 0.05\text{ mm}$) without burrs or camber.
- Custom Hardness Conditions: Available in various tempers ranging from Annealed (Soft) to 1/4 Hard, 1/2 Hard, 3/4 Hard, and Full Hard for specialized spring and stamping uses.
- Surface Protection: Laser PE film, blue PVC coating, or paper interleaving between layers to prevent scratches during decoiling and automated stamping.
Quality Control & Packaging
- 100% Traceable Documentation: Every coil shipment is delivered with an EN 10204 3.1 Mill Test Certificate (MTC) verifying chemical composition, tensile strength, yield strength, and elongation.
- Seaworthy Export Packaging: Heavy-duty vertical (Eye-to-Sky) or horizontal (Eye-to-Wall) coil packaging wrapped in moisture-proof plastic film, anti-rust paper, and secured on strong wooden pallets for ocean transport.