Cold Rolled Steel Sheet in Coil: Comparing DC01, DC04, and SPCC Grades by Specifications, Surface, and Application

Overview: Cold Rolled Steel Sheet in Coil at Xingtai Baidy Steel Works Co., Ltd.

Cold rolled steel sheet in coil is produced by passing hot-rolled steel through a cold-reduction mill at or near ambient temperature, which compresses the material to tighter dimensional tolerances and produces a smoother surface than hot-rolled equivalents. Xingtai Baidy Steel Works Co., Ltd. offers cold-rolled coil products under several internationally recognized grades. According to published product documentation, the available grades include DC01, DC02, DC04, SPCC, SPCD, and ST12–ST15, with compliance across BS, EN, GB, AISI, ASTM, DIN, and JIS standards.

This article compares the three most commonly specified grades—DC01, DC04, and SPCC—using criteria drawn from the product data published by Xingtai Baidy Steel Works Co., Ltd. All three grades share the same documented dimensional envelope and baseline processing conditions; differences lie in their intended formability tier and typical end-use application.

Scope note:

Shared Dimensional Parameters

All three grades—DC01, DC04, and SPCC—have identical dimensional specifications across the product range:

Because these parameters are uniform across grades, buyers choosing between DC01, DC04, and SPCC do so on the basis of formability class, surface expectations, and application fit—not on dimensional range alone.

Grade-by-Grade Comparison

DC01 — General-Purpose Cold Rolled Steel Coil

DC01 is described in published product documentation as a general-purpose cold-rolled steel for standard fabrication. It is suited to applications that require a consistent surface finish and controlled dimensions but do not demand extreme drawing depth or high ductility. Typical end uses noted in the documentation include standard structural components, general home appliance panels, and non-critical architectural elements.

Surface: The cold-rolling process eliminates pitting and iron oxide scale, producing a smooth, oiled surface ready for painting or coating.
Formability: Adequate for moderate bending and light forming; not optimized for deep drawing.
Standards match: Aligns with ASTM A366 commercial steel designation (noted in published product excerpts), as well as EN, GB, DIN, and JIS equivalents.

DC04 — Deep-Drawing Cold Rolled Steel Coil

DC04 is specifically engineered for deep drawing applications. The published FAQ states directly: "DC04 is specifically engineered for deep drawing applications, offering significantly higher ductility and formability" compared with DC01.

Surface: Identical oiled surface condition to DC01; skin pass applied.
Formability: Superior deep drawing capability; optimized for complex forming and intricate component geometries.
Applications: High-end automotive structural components, precision appliance inner bodies, and architectural components where intricate forming is required.
Note for buyers: Where forming depth and die complexity are design constraints, DC04 is the higher-formability option within this product range.

SPCC — JIS-Standard Commercial Cold Rolled Coil

SPCC (Steel Plate Cold Commercial) is a JIS-origin designation for commercial-quality cold-rolled steel. The published grade list includes SPCC alongside SPCD (the deep-drawing JIS equivalent), indicating that Xingtai Baidy Steel Works Co., Ltd. maps its product range to both EN/DIN and JIS designations within the same physical coil product.

Surface: Same normal oiled finish; skin pass applied.
Formability: Commercial quality; functionally comparable to DC01 in standard forming scenarios, though buyers specifying to JIS should verify the exact JIS sub-grade (SPCC vs. SPCD) with the supplier for their application.
Standards match: JIS G 3141; also cross-referenced against GB and ASTM equivalents in multi-standard documentation.
Application: Home appliances, general manufacturing, and packaging-related steel where JIS compliance is required by the buyer's supply chain.

Side-by-Side Comparison Table

Cold Rolled Coil vs. Standard Hot Rolled Steel

The published product data includes a direct comparison between cold-rolled and standard hot-rolled steel across five criteria. These values are drawn from the product's own published comparison table:

This table reflects the supplier's published data. Buyers should validate with their own processing requirements and, where needed, request independent material test reports (MTRs).

Available Processing Services

Published documentation confirms the following value-added processing capabilities are offered alongside coil supply:

• Precision Cutting — Fiber machine cutting to client drawings
• Bending & Forming — Industrial bending for structural angles
• Surface Treatment — Automated paint and blasting finish
• Welding & Punching — Integrated fabrication services
• Annealing — Controlled process to improve ductility
• Decoiling & Leveling — Preparation for direct production line feeding

Buyers sourcing cold rolled steel sheet in coil for high-volume production runs may find these services relevant to reducing in-house pre-processing steps.

How to Choose Between DC01, DC04, and SPCC

The selection decision can be summarized around three questions:

1. How deep is the draw? If your tooling requires multi-stage deep drawing or complex geometries (e.g., automotive inner panels, deep appliance bodies), the choice within this range is DC04 for its higher ductility.
2. Which standards does your supply chain require? Where JIS compliance is mandatory, SPCC is the JIS-aligned grade. For EN, DIN, ASTM, or GB specifications, DC01 or DC04 map more directly.
3. Is surface finish a differentiator for your application? All three grades share the same oiled, skin-passed surface; surface finish does not differentiate grade selection within this product line.

For procurement inquiries, Xingtai Baidy Steel Works Co., Ltd. lists its cold rolled steel sheet in coil products at the following pages:

• Premium Cold Rolled Steel Sheets and Coils — China Factory Suppliers
• Premium Cold Rolled Steel Sheets and Coils — Factory Reliable China Suppliers

Summary

All three grades of cold rolled steel sheet in coil offered by Xingtai Baidy Steel Works Co., Ltd.—DC01, DC04, and SPCC—share the same dimensional envelope (0.5–3 mm thickness, 901–1,000 mm width, ±1% tolerance), identical surface treatment, and the same certification baseline (CE, BIS, ISO 9001). The meaningful differences are in formability class and standard alignment: DC04 delivers the highest documented ductility for deep drawing, DC01 covers general-purpose EN/ASTM fabrication, and SPCC addresses JIS-market commercial requirements. No grade is universally superior; the right specification depends on the buyer's forming complexity, standards requirements, and downstream processing plan.