Description
Direct Mill Supply for Cold Rolled Coils — Every DC01, ST12, and SPCC coil ships with original mill test certificates and verified chemistry from our Shandong warehouse.
Technical Specifications
| Parameter | Value |
|---|---|
| Designation | DC01 / ST12 / SPCC Cold Rolled Steel Coil |
| Product Type | Cold Rolled Steel Coil |
| Steel Grade | DC01, ST12, SPCC, 1008, 1010 |
| Standard | EN 10130 (DC01), DIN 1623 (ST12), JIS G 3141 (SPCC), ASTM A1008 (1008/1010) |
| Thickness | 0.2–3 mm |
| Width | 600–3000 mm |
| Length | Coil / According to customer requirements |
| Weight per Coil | 8–35 MT |
| Technique | Cold Rolled |
| Surface Treatment | Annealed, Black, 2B finish |
| Hardness | Full Hard / Half Hard / Soft (Annealed) |
| Packaging | Export standard, seaworthy |
| Origin | China |
Application Suitability
| Industry | Typical Applications |
|---|---|
| Tube Manufacturing | Welded tube and pipe production from cold rolled strip slitting |
| Automotive Parts | Deep drawn housings, brackets, and chassis components |
| Home Appliances | Outer shells for washing machines, refrigerators, and HVAC enclosures |
| Construction | Roof panels, roof grilles, and light structural profiles |
| Food & Packaging | Food storage containers, transportation equipment, and metal packaging |
Why Annealing Uniformity Decides Whether Your Deep-Drawn Parts Crack
Soft-annealed DC01 SPCC cold rolled steel coil must deliver consistent grain structure across the entire coil width — or your forming line will produce scrap before lunch.
Buyers who source cold rolled coils without verifying annealing uniformity routinely discover half-hard patches hiding inside soft-graded batches. The material looks right on the mill test certificate, but when it hits the press, hairline cracks appear along the seam of drawn tubes or the corners of appliance shells. Sorting a full container by hand costs more than the original price difference between a verified supplier and the cheapest offer on the portal. [NEED_CITE: cold rolled coil annealing uniformity and deep drawing quality correlation]
Matching Hardness Conditions to Your Forming Process
Cold rolled coils arrive in three hardness states — full hard, half hard, and soft annealed — and selecting the wrong condition wastes material before the first stroke. For deep drawing applications like automotive housings and appliance shells, soft-annealed DC01 SPCC cold rolled steel coil provides the elongation needed to form complex curves without splitting. Half hard suits roll forming into roof panels and structural profiles where moderate strength matters more than extreme formability. Full hard serves welded tube manufacturing, where the coil will be slit and formed but not deeply stretched.
Engineering Compliance and Standard Equivalence
Cold rolled coil procurement for international projects requires navigating overlapping standard systems — EN 10130 for European specifiers, JIS G 3141 for Asian markets, ASTM A1008 for North American buyers. DC01 under EN 10130 corresponds closely to ST12 under DIN 1623 and SPCC under JIS G 3141, but chemical composition limits and mechanical property ranges differ slightly between standards. [NEED_CITE: steel grade equivalence mapping between EN 10130 DC01 and JIS G 3141 SPCC] Projects requiring CE marking or third-party inspection must confirm that the supplied grade meets the exact standard referenced in the engineering drawing — not a “similar” grade from a different system. Thickness tolerance compliance with EN 10130 Class A or B affects both theoretical weight calculations and final part dimensions.
Understanding the DC01 / ST12 / SPCC Grade Family
These three designations represent the same commercial quality cold rolled steel across different standard systems. DC01 (EN 10130) is the European designation for non-ageing low-carbon steel intended for cold forming. ST12 (DIN 1623) is the German equivalent, historically specified in European automotive and appliance supply chains. SPCC (JIS G 3141) is the Japanese standard for commercial quality cold rolled steel, widely used across Southeast Asia and the Middle East. All three share low carbon content suitable for general forming, bending, and light deep drawing — but they are not interchangeable without checking the specific project specification. The ASTM A1008 equivalents 1008 and 1010 extend this family into the North American market, with slightly different phosphorus and manganese limits.
Cold rolling itself reduces hot-rolled coil thickness through room-temperature reduction, producing tighter dimensional tolerance and smoother surface finish than hot-rolled alternatives. The 2B finish provides a bright, uniform surface suitable for painting and plating. Annealed black finish serves applications where surface appearance is secondary and further processing will remove the scale.
The Hidden Cost of Buying Cold Rolled Coils Without Verified Chemistry
Purchasing DC01 SPCC cold rolled steel coil based on grade name alone — without original mill test certificates showing actual heat chemistry and mechanical properties — creates downstream risk across the entire supply chain. Material that fails to meet the specified carbon or manganese range will crack during deep drawing, regardless of what the purchase order says. Coils with undocumented negative tolerance deviations arrive lighter than invoiced, inflating your effective cost per kilogram while reducing structural integrity in load-bearing applications. Customs authorities in markets requiring EN or ASTM compliance may reject shipments lacking proper certification, delaying projects and generating demurrage charges. [NEED_CITE: import customs rejection rates for steel products lacking mill test certificates]
Procurement Confidence Through Verified Supply Chain Control
Every DC01 SPCC cold rolled steel coil in our inventory carries original mill test certificates with heat number traceability — not copies, not summaries, but the actual document from the producing mill. Our Shandong warehouse maintains ready stock across the full thickness range from 0.2 mm to 3 mm and width up to 3000 mm, eliminating the need to split orders across multiple suppliers. Custom slitting to your required strip width and leveling for flatness-critical applications happen in-house before shipment. Third-party inspection through SGS or BV is available before container loading, providing independent verification of dimensions, surface quality, and packaging condition. Professional heavy cargo loading — using flatbed trucks, open-top containers, or break-bulk vessels as the order requires — prevents the edge damage and coil shifting that plague improperly handled shipments.
Documentation & Compliance
- Mill test certificate documenting DC01 chemical composition (carbon, manganese, phosphorus, sulfur limits) and mechanical properties per EN 10130
- Original MTC with heat number traceability linking each coil to its producing melt
- ISO 9001:2015 quality management certification covering the entire supply and inspection process
- SGS or BV third-party inspection report available upon request before shipment release
- Customs documentation including commercial invoice, packing list, bill of lading, and certificate of origin
- CE compliance documentation for European market entry where applicable
Packaging, Loading & Delivery
- Cold rolled coils bundled with minimum three steel straps and edge protectors to prevent edge damage during ocean transit
- Surface protection through anti-rust oil application on 2B finish coils, preserving surface quality through humid climate transport
- Container loading optimized for 8–35 MT coil weights, with wooden cradles and chocking to prevent rolling during transit
- Coil identification labels showing heat number, steel grade (DC01/ST12/SPCC), thickness, width, and net weight for warehouse receiving
- FOB, CIF, and DDP shipping terms available, with professional logistics coordination for both container and break-bulk shipments
- Custom packaging requirements for sensitive applications (food contact, automotive exterior) accommodated upon specification
Getting Your Cold Rolled Coil Inquiry Processed
Submit your required steel grade (DC01, ST12, or SPCC), thickness, width, hardness condition, and destination port — we return a detailed quotation including material cost, any slitting or leveling charges, and shipping terms within 12 hours. Specify whether you need original mill test certificates before shipment or third-party inspection arranged. For custom slit widths or specific surface finish requirements, provide your drawing specification and we confirm feasibility against our processing capabilities.
Frequently Asked Questions
Q: What is the difference between DC01, ST12, SPCC, and 1008 — which grade should I choose for deep drawing vs. tube making?
A: DC01 (EN 10130), ST12 (DIN 1623), and SPCC (JIS G 3141) are commercial quality cold rolled grades suitable for general forming and light deep drawing. For deep drawing applications requiring maximum elongation, specify soft-annealed condition. For welded tube manufacturing, half hard or full hard provides the stiffness needed for roll forming. ASTM 1008/1010 serves North American specifications. We provide grade equivalence guidance based on your specific forming process.
Q: Can you provide original mill test certificates and accept third-party inspection (SGS/BV)?
A: Yes. Every DC01 SPCC cold rolled steel coil ships with original mill test certificates showing chemical composition and mechanical properties with heat number traceability. Third-party inspection through SGS or BV can be arranged before shipment at your request, with inspection reports provided prior to container sealing.
Q: What is the thickness tolerance on cold rolled coils — do you practice negative tolerance?
A: Our cold rolled coils are produced to standard tolerance classes per EN 10130 or equivalent standards. We provide dimensional reports showing actual measured thickness for each coil. We do not engage in hidden negative tolerance practices — what is invoiced matches what is delivered.
Q: What surface finishes are available (2B, annealed black, oiled) and how do they affect painting and welding?
A: 2B finish provides a bright, smooth surface ideal for painting, powder coating, and electroplating. Annealed black finish serves applications where appearance is secondary and the surface will be pickled or processed further. Anti-rust oil can be applied to any finish to prevent corrosion during storage and transit. All finishes are compatible with standard welding processes.
Q: How do you load heavy coils into containers — flatbed, open-top, or break-bulk options?
A: Coil loading method depends on weight and destination. Standard 8–15 MT coils ship in 20ft containers with wooden cradles and chocking. Heavier coils (15–35 MT) require open-top containers or break-bulk vessel loading. Our logistics team coordinates the appropriate method based on your order specifications and destination port capabilities.
Request DC01 SPCC Cold Rolled Steel Coil Quotation with Mill Test Certificates
Send your specification — grade, thickness, width, hardness, quantity, and destination — to receive a detailed quotation and sample mill test certificate within 12 hours.
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