Prefabricated Steel Structure Industrial Buildings
Our steel structure factories are specialized industrial facilities that utilize controlled factory environments to precisely prefabricate steel materials including steel plates, sections, and pipes. The core function involves mass-producing structural components such as steel columns, beams, trusses, portal frames, and node connectors for efficient transportation and rapid on-site assembly.
Factory prefabrication delivers superior accuracy, shortened construction timelines, reduced material waste, and compliance with international quality standards compared to traditional on-site processing methods.
Main Structural Components
- H steel columns and beams for primary framework
- C or Z section roof and wall purlins
- Round tube steel tie bars for structural stability
- Round steel bracing systems
- Color steel sheet roofing and wall cladding
- Sandwich panel sliding doors
- PVC window systems
Technical Specifications
| Component |
Specification |
| Main Structure - Column |
Q355, Q235 H-steel; Box column available |
| Main Structure - Rafter, Beam |
Q355, Q235 H-steel |
| Surface Processing |
Epoxy zinc-rich primer + epoxy mica intermediate paint or Hot-dip galvanization |
| Sub Structure - Purlin |
Q355B C/Z steel section, galvanized |
| Sub Structure - Angle Brace |
Q235B L-steel |
| Sub Structure - Cross Bracing |
Q235B round bar, L-steel |
| Sub Structure - Tie Bar |
Q235B round pipe |
| Sub Structure - Batter Brace |
Q235B round bar |
| Roof System - Roof Panel |
Q235B Steel |
| Roof System - Gutter |
Q235B Steel |
| Roof System - Down Spout |
Q235B Circular Steel Pipe |
| Roof System - Flashing & Cover |
Q235B Round Bar |
| Wall System - Wall Panel |
Insulated sandwich panel (PU, rock wool, glass fiber, EPS), Steel plate, or Client-provided brick wall |
| Wall System - Door |
Roller door for truck, sliding door for truck (custom sizes), Access doors (steel, glass, etc.) |
| Wall System - Window |
PVC or Aluminum frame (fixed, swing, sliding, louver) |
| Wall System - Flashing & Cover |
Steel sheet end cover and corner cover |
| Accessories & Fasteners |
Anchor bolts, chemical bolts, high-strength bolts, ordinary bolts, self-drilling screws, rivets |
| Additional Options |
Crane systems (5T, 6T, 10T, 16T, 30T, etc.) |
Customization: All steel structure factories are fully customized with material selection based on client requirements and specific operational needs.
Standardized Production Process
- Drawing Detailing & Process Planning: Transform architectural designs into factory-ready details using BIM modeling; compile process cards, welding plans, and quality control protocols
- Raw Material Acceptance & Pre-treatment: Verify material certifications, conduct spectral analysis and tensile testing; perform shot blasting (Sa2.5 grade), primer application, and rust prevention
- CNC Cutting & Blanking: Precision cutting using plasma/laser/flame cutting machines with optimized nesting for maximum material utilization
- Component Processing & Assembly: CNC drilling/punching and beveling; H-beam assembly using specialized machinery for web plates and flanges
- Welding & Non-Destructive Testing: Submerged arc welding and CO₂ gas shielded welding (primarily automated); ultrasonic and radiographic flaw detection for critical welds
- Straightening & Grinding: Correct welding deformation using flange straightening machines and flame straightening; remove burrs and spatter
- Surface Coating & Corrosion Protection: Apply anti-corrosion primer, intermediate paint, and topcoat systems or hot-dip galvanizing; test paint film thickness and adhesion
- Final Inspection & Packaging: Verify dimensional accuracy and issue certificates of conformity; label with serial numbers, weight, and lifting points; implement rust-proof packaging for transport
