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Corrugated Corten Steel Siding
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Corrugated Corten steel siding is a weathering steel cladding system widely used in shipping containers, modular buildings, and industrial structures. Although side panels, roof panels, and bottom (floor) structures are all made from corten steel, their specifications and dimensions are different because each part serves a different structural function.
1. Side Panels (Corrugated Corten Steel Siding Panels)
Side panels are the main enclosure parts of a container or structure.
Typical Specifications
| Item | Specification |
|---|---|
| Thickness | 1.6–2.0 mm |
| Width | 1000 / 1219 / 1250 / 1500 mm |
| Length | 2000–6000 mm |
| Corrugation | Medium or deep rib profile |
Characteristics
- Balanced strength and appearance
- Designed for vertical load distribution
- Must resist wind pressure and stacking force
- Most commonly standardized panel in container systems
Side panels focus on overall structural enclosure and rigidity.
2. Roof Panels (Top Corrugated Corten Steel Sheets)
Roof panels are designed for weather protection and drainage.
Typical Specifications
| Item | Specification |
|---|---|
| Thickness | 0.8–1.6 mm |
| Width | 1000 / 1250 / 1500 mm |
| Length | 2000–6000 mm |
| Corrugation | Shallow or trapezoidal profile |
Characteristics
- Thinner than side panels
- Designed for rain drainage and wind resistance
- Not required to bear stacking loads
- Lightweight design for long-span coverage
Roof panels prioritize weather resistance and drainage efficiency.
3. Bottom Panels / Floor Structure (Corten Base System)
Bottom structure is the strongest load-bearing part of the container system.
Typical Specifications
| Item | Specification |
|---|---|
| Thickness | 2.0–3.0 mm (steel sheet layer) |
| Width | 1000 / 1250 / 1500 mm (depending on design) |
| Length | Custom / full container length |
| Structure | Steel beams + corrugated or flat sheet |
Characteristics
- Highest strength requirement
- Must support cargo and forklift loads
- Combined with internal steel beams
- Designed for impact resistance
Bottom panels focus on load-bearing and structural safety.
4. Key Size Difference Comparison
| Component | Thickness | Strength Level | Main Function |
|---|---|---|---|
| Side Panels | 1.6–2.0 mm | Medium–High | Structural enclosure |
| Roof Panels | 0.8–1.6 mm | Medium | Weather protection |
| Bottom Structure | 2.0–3.0 mm+ | Very High | Load-bearing base |
5. Why the Sizes Are Different
The differences in specification are determined by engineering requirements:
1. Load Distribution
- Bottom: carries full cargo weight
- Side: resists lateral pressure and stacking force
- Roof: only supports environmental load
2. Material Efficiency
- Thicker steel is used only where necessary
- Roof uses thinner sheets to reduce weight
- Side panels balance strength and cost
3. Structural Safety Design
Each section is optimized to ensure:
- Container stacking safety
- Transport stability
- Long service life under harsh conditions



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