Q235B Q355B Prefab Steel Frame Building with 30-50 Years Lifespan and High Intensity for Custom Design

Multi-story steel structure buildings are high-rise or mid-rise structures (typically 3-20+ floors) using steel as the primary structural framework. They combine strength, efficiency, and design flexibility, making them a popular choice for diverse urban and commercial needs.

• High Strength-to-Weight Ratio: Steel's strength allows for lighter yet robust frameworks, reducing foundation loads while supporting multiple floors and heavy usage.
• Design Flexibility: Enables open floor plans, large spans, and creative architectural features, maximizing usable space and aesthetic appeal.
• Rapid Construction: Prefabricated components shorten build times by 20-40% compared to concrete structures.
• Durability & Resilience: With proper corrosion protection, steel resists environmental wear, fire, and seismic activity, ensuring a long lifespan.
• Sustainability: Steel is 100% recyclable, and its lightweight nature reduces material waste while supporting energy-efficient upgrades.

• Dimension: Length x width x Eave height, roof slope
• Type: Single slope, double slope, multi-slope; Single span, double-span, multi-spans; Single floor, double floors, multi-floors
• Foundation: Concrete and steel foundation bolts
• Column and Beam: Hot rolled or welded H steel Q355B, all high strength bolts connection
• Bracing: X or V type bracing made from angle steel or steel pipe
• Purlin: Q235B C/Z section steel with size C160-300 or Z160-300
• Roof and Wall Panel: Single colorful corrugated steel sheet or sandwich panel with insulation
• Surface Treatment: Painting or hot dip galvanized

The portal steel frame and external enclosure structure constitute an enclosed building structure with sufficient strength to withstand severe weather conditions. Components are processed in the workshop and then transported to the construction site, requiring only bolt fixing for quick and labor-saving installation.

We deploy extensive quality control measures including inspections of all materials prior to and following fabrication. Our highly trained fabrication and welding staff deliver services designed to meet your specific project requirements:

• Measuring, cutting and welding the steel
• Placing the holes and cleats in the correct position
• Packaging and carefully loading in the right sequence
• Dispatching to site and erecting if required

Method 1: We provide shop drawing before installation.

Method 2: If you still don't know how to install, We will teach you the installation in our factory. when necessary, we will assemble a sample steel structure building for you.

All the structure components, panels, bolts and sort of accessories will be well packed with standard package suitable ocean transportation and loaded into 40'HQ.

All the products are loaded at the loading site of our factory using crane and forklift by our skilled workers, who will prevent the goods to be damaged.

• Professional design team: We could design the drawing as your requirement or calculate the steel quantity based on your drawing.
• Skilled fabrication team: Advanced equipment and independent production schedule for each project.
• One-stop service: Integrated proposal for your project based on extensive experience.
• Quality assurance: Professional QC team guarantees production and service meet your requirements.
• After-sales service: Maintenance support for insulation and steel components as needed.