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| Product Type | Specification (mm) | Thickness (mm) | Performance & Application |
|---|---|---|---|
| Ceiling Main Keel | U50×19 | 0.5/0.6/0.7 | ≥235MPa yield strength, indoor ceiling main load-bearing frame |
| Wall Vertical Keel | C75×40×15 | 0.6/0.7/0.8 | ≥235MPa yield strength, interior non-load-bearing partition main frame |
| Ceiling Aux Keel | U38×12 | 0.4/0.5/0.6 | Matching main keel, ceiling secondary frame |







Terra Steel