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SPCC, DC01, SGCC, SS400, Q235, ZAM and weathering steel for enclosures, cabinets, structures and outdoor products.
Carbon and coated steels support a wide range of cost-sensitive sheet metal products, welded structures and outdoor fabrication projects. Material selection should balance formability, structural requirements, corrosion exposure, surface appearance and the applicable project specification.
Material Options
Best For
Main Selection Priority
What We Need
How To Choose
Choose cold-rolled steel for formed sheet-metal parts, structural steel for welded load-bearing components, and coated or weathering steel when outdoor exposure is important.
| Material option | Choose it when | Typical products | Confirm before production |
| SPCC | An economical, smooth cold-rolled sheet is needed for precision forming and coating. | Indoor enclosures, panels, covers and cabinets | Corrosion exposure, coating system and the specified standard |
| DC01 | The drawing or customer specification calls for an EN cold-rolled forming grade. | Formed panels, covers and precision sheet metal parts | Applicable EN specification, thickness and finish |
| SGCC | A factory-applied zinc coating is preferred for improved corrosion protection. | HVAC parts, electrical components and cable-management parts | Coating specification, cut edges, holes and welded areas |
| SS400 | A JIS structural steel is specified for a welded or load-bearing product. | Machine frames, bases and equipment structures | The approved standard, load requirements and thickness |
| Q235 | A GB structural carbon steel is specified for fabricated structures. | Frames, supports and welded structures | The exact Q235 grade, mechanical requirements and drawing |
| Zn-Al-Mg coated steel | Outdoor corrosion resistance is important and a metallic-coated steel route is preferred. | Solar supports,new energy and selected outdoor structures | Supplier coating specification, coating mass, forming and post-weld protection |
| Weathering steel | A natural weathered appearance is part of the product design. | Planters, landscape products and architectural metalwork | Drainage, wet-dry exposure, runoff staining and the specified grade |
Common Material Options
Common options include SPCC, DC01, SGCC, SS400, Q235, Zn-Al-Mg coated steel and weathering steel. Final selection should follow the drawing, environment, thickness and finish requirements.
SPCC
DC01
SGCC
SS400
Q235
Zn-Al-Mg Coated Steel
Weathering Steel
Best Fit Products：
- Battery storage and control cabinets
Compatible Manufacturing Processes
Depending on the design, carbon and coated steel can be laser cut, punched, bent, welded, ground, finished and assembled.
The actual manufacturing route is confirmed according to the drawing, material condition, finish and assembly requirements.
Surface and Corrosion Protection Options
Choose the finish based on the product’s appearance and where it will be used.
Powder Coating
Wet Painting
Hot-Dip Galvanizing
Mill-Applied Metallic Coatings
Natural Weathering Finish
Key Design Considerations
Before ordering custom steel parts, confirm the load, bend details, coating requirements, weld access and drainage.
Corrosion Environment
Cut Edges and Welded Areas
Structural Load
Weathering and Drainage
Common Selection and Fabrication Risks
For custom steel parts, check the coating, material grade and structural design before production.
Bare Carbon Steel Outdoors
Cut Edges & Weld Areas
Material Grade Substitution
Poor Weathering Steel Drainage
Relying Only on Material Thickness
Grade and Standard Reference
Publish only after supply data is confirmed. These are references, not automatic grade equivalencies.
| Designation | Common standard family | Material category | Publication note |
| SPCC | JIS G 3141 | Cold-rolled steel sheet | Do not present it as automatically equivalent to DC01 or ASTM grades. |
| DC01 | EN 10130 | Cold-rolled low-carbon steel sheet | Use when the project or drawing specifies the EN designation. |
| SGCC | JIS G 3302 | Hot-dip zinc-coated steel sheet | Confirm coating designation and coating mass with the supplier. |
| SS400 | JIS G 3101 | General structural steel | Do not combine it with Q235 as one interchangeable grade. |
| Q235 | GB/T 700 | Carbon structural steel | Confirm the full grade and quality level stated by the customer. |
| Zn-Al-Mg coated steel | Supplier or project-specific specification | Metallic-coated steel system | Use a generic name unless a specific trademarked product is actually supplied. |
| Weathering steel | Project-specified standard such as EN 10025-5 or ASTM A588 | Atmospheric corrosion-resistant structural steel | Publish only the grades the factory can source and document. |
FAQ
There is no single outdoor steel for every project. Painted carbon steel, galvanized steel, Zn-Al-Mg coated steel, stainless steel or weathering steel may be suitable depending on moisture, chlorides, expected life, appearance, maintenance and budget.
No. Both are metallic-coated steel systems, but their coating compositions and performance characteristics differ. The supplier specification, coating mass, cut-edge condition and fabrication route should be confirmed.
Yes, but welding locally affects the coating. Weld preparation, ventilation, cleaning and post-weld corrosion protection should be defined according to the coating and service environment.
It can be suitable when the design includes drainage, appropriate exposure and control of rust runoff. Continuously wet soil contact, standing water and staining of surrounding surfaces must be considered.
Ready to start your project?
Send your drawing, material standard, thickness, service environment, finish, quantity and assembly requirements. We can review the information and suggest a practical material and manufacturing route for your approval before quotation.
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