High Strength Structural Steel Frame Construction Long Span Steel Structure Factory Building
Product Details
| Structural Frame: | High-Strength Steel Frame | Steel Grade: | Q355B / Q355NL |
|---|---|---|---|
| Structural Solutions: | Space Frames, Cable-Supported Beams | Component Processing: | CNC Pipe Intersection Cutting |
| Protective Treatment: | Project-Specific Protective Coating | Application: | Factory, Exhibition Hall, Warehouse |
| Highlight |
High Strength Structural Steel Frame,Long Span Steel Structure Factory Building,Turnkey Steel Frame Factory Building |
||
Product Description
Large-span steel structures are engineered to create large, open interior spaces with minimal or no intermediate columns. Depending on building dimensions, roof geometry, loading conditions, and architectural requirements, structural solutions may include space frames, steel trusses, cable-supported beam systems, and long-span portal frames. These systems are widely applicable to industrial buildings, sports facilities, exhibition halls, warehouses, and other projects requiring extensive roof coverage.
Bafang Steel Structure provides coordinated steel fabrication and export support for overseas long-span construction projects. Our capabilities cover BIM-based 3D detailing, steel member fabrication, CNC pipe intersection cutting, component identification, and export packaging. We also prepare assembly documentation and project-specific installation plans, with remote technical assistance available to help overseas construction teams coordinate steel erection and on-site assembly.
From fabrication planning to shipment preparation, our approach focuses on dimensional coordination, component traceability, and practical installation requirements. Structural configurations, material specifications, fabrication procedures, and protective treatments can be determined according to approved engineering drawings and project requirements.

| Item | Specification |
|---|---|
| Product Name | Long-Span Steel Structure |
| Main Structural Systems | Space Frames (Spatial Grid Structures), Steel Trusses, String-Supported Beam Structures, Long-Span Portal Frames |
| Steel Grade | Q355B / Q355NL |
| Bolts & Welded Connections | High-Strength Bolts; Complete Joint Penetration (CJP) Welded Connections, Where Specified |
| Wall & Roofing Systems | Metal Roof Panels / Insulated Roofing Systems (Optional) |
| Doors | Not Applicable to Open Roof Structures |
| Windows & Daylighting | Roof Skylight Panels (Optional) |
| Surface Treatment | Shot Blasting for Rust Removal and Protective Coating; Fire-Resistant Coatings Available as Required |
| Additional Specifications | Single-Span Configurations of 60–180 m, Subject to Structural Design; CNC Intersecting-Line Cutting; Nondestructive Testing (NDT) of Category I Welds as Specified; Roof Loads Calculated on a Project-Specific Basis in Accordance with Applicable International Design Standards |
Long-span steel systems reduce the need for intermediate columns, providing more usable interior space for production lines, storage operations, spectator seating, and other building functions.
Structural configurations are selected according to span, loading conditions, stability requirements, and material efficiency. Engineering calculations help establish a suitable balance between structural performance and steel consumption.
Space frames, steel trusses, cable-supported systems, and long-span portal frames offer different solutions for varied roof geometries, building layouts, and architectural concepts.
BIM-assisted detailing, CNC cutting, precision member processing, and component marking help coordinate manufacturing with approved drawings and facilitate component identification during transportation and assembly.
Steel members are identified and packaged according to project-specific transportation and assembly requirements. Assembly drawings, lifting plans, and remote technical guidance can support overseas teams during steel structure erection.

- Industrial Workshops: Large production areas with flexible equipment layouts and fewer internal obstructions.
- Warehouses and Logistics Facilities: Expansive roof coverage for storage, material handling, and logistics operations.
- Sports Arenas and Stadiums: Wide-span roof systems designed around spectator areas and venue layouts.
- Exhibition and Convention Centers: Open interiors suitable for exhibitions, events, and temporary installations.
- Large Public Buildings: Structural solutions for terminals, halls, and other buildings with demanding spatial requirements.

Three-dimensional modeling and structural detailing help coordinate member geometry, connection locations, and fabrication information before manufacturing. The scope of modeling and drawing deliverables is agreed upon according to project requirements.
Steel members are processed according to approved fabrication drawings. CNC pipe intersection cutting can be used for applicable tubular members, while other cutting and machining methods are selected according to component geometry and connection design.
Component identification supports the matching of fabricated members with drawings, packing lists, and assembly sequences. Consistent marking helps overseas teams identify components during unloading and erection.
Packaging plans take account of component dimensions, weights, transportation conditions, container limitations, and the planned installation sequence. Where appropriate, members can be grouped and packed to support efficient unloading and on-site handling.
Bafang Steel Structure can provide assembly drawings, installation documentation, and project-specific lifting plans. Remote technical assistance helps overseas construction teams clarify component identification, assembly sequences, and technical details during installation. Site supervision and other on-site services should be confirmed separately according to project scope.
Quality inspections should be conducted at appropriate stages of fabrication to verify compliance with approved drawings, material specifications, and project requirements.
- Material Verification: Check steel grades, material certificates, and traceability records.
- Dimensional Inspection: Verify member lengths, connection positions, and fabrication dimensions against approved drawings.
- Welding Inspection: Conduct visual inspections and specified nondestructive testing in accordance with applicable project requirements.
- Surface Treatment Inspection: Check surface preparation, protective coating application, and specified coating thickness.
- Final Inspection: Verify component markings, quantities, packing lists, and export packaging before shipment.
Inspection methods, acceptance criteria, and documentation should follow the applicable project specifications and governing standards.

Established in 1999, Bafang Steel Structure is an integrated steel structure group delivering end-to-end services in engineering research, structural design, fabrication, and installation. The company undertakes a diverse range of steel construction projects, drawing on its experience in complex structural systems and large-scale engineering applications. Its project portfolio spans industrial buildings, transportation hubs, public and commercial venues, bridges, high-rise structures, long-span roofing systems, enclosed bulk material storage facilities, and offshore photovoltaic installations. By combining engineering expertise with manufacturing capabilities, Bafang Steel Structure develops project-specific solutions tailored to different structural requirements and construction environments.

We manufacture space frames, steel trusses, string-supported beam structures, and long-span portal frames. Structural selection is based on span requirements, loading conditions, architectural design, and project constraints.
Long spans within this range may be feasible depending on the structural system and project conditions. Final specifications are determined through engineering analysis and project-specific design.
Q355B and Q355NL steel grades are available subject to project specifications. Design codes, material requirements, and inspection standards can be coordinated according to the applicable regulations in the destination market.
Yes. Our services can include component marking, export packaging, packing lists, assembly drawings, erection planning, and remote technical support, depending on the agreed project scope.
Please share the project location, building dimensions, required span, available drawings, roofing specifications, applicable design standards, and delivery destination. These details help us evaluate the project and prepare a more accurate quotation.
Product Highlights
High-strength Q355B/Q355NL long-span steel structures with CNC precision fabrication for factories, warehouses, and exhibition halls. Space frames, trusses, and cable-supported systems deliver 60-180m clear spans. BIM detailing, export packaging, and remote installation support included.
Large Span Steel Structure Factory Q235B Q355B Metal Frame Industrial Buildings OEM Design
Bafang provides custom-engineered prefabricated steel structure buildings for multi-story projects. Our integrated approach covers design, fabrication, and overseas support, ensuring high strength, shorter construction time, and adaptability to local conditions. Suitable for offices, commercial buildings, and mixed-use developments.
Wide Span Steel Structure Exhibition Hall Custom Steel Hall Construction Earthquake Proof
Bafang's steel structure exhibition halls feature long-span trusses and space frames for column-free layouts, using Q235B/Q355B steel with anti-corrosion coating. Customizable roofing, glass walls, and skylights meet project needs. Export-ready with numbered components, installation drawings, and technical guidance for efficient overseas assembly.
Anti Seismic Rail Transit Steel Structure Building Public Infrastructure Steel Frame Construction
Customized steel structures for municipal and public facilities, fabricated to project drawings with Q235B/Q355B steel. Hot-dip galvanizing or heavy-duty coatings ensure durability. Export-ready packaging, quality documentation, and seismic design support reliable global delivery.
Q235B / Q355B Public Infrastructure Steel Structure Metal Frame School Building Customizable
Custom Q235B/Q355B steel structures for municipal projects: columns, beams, frames, brackets. Hot-dip galvanized or heavy-duty coated for outdoor durability. Export-ready segmentation, quality documentation, and fabrication to approved drawings.
Please use our online inquiry contact form below if you have any questions, our team will get back to you as soon as possible.