fire proofing steel structure pre engineerd workshop

50 년 수명으로 방화 방지 사전 제조 철강 구조 작업실

Fire Proofing Low Cost Steel Structure Pre-Engineered Workshop Product Specifications Attribute Value Raw Steel Material Q235B, Q355B, ASTM A36 Application Steel Workshop, Steel Structure Platform, Structural Roofing, Frame Part Surface Treatment Painting or Hot-DIP Galvanized Service Life 50 Years ...