YOUR STEEL STRUCTURE ENGINEERING EXPERT
We are a steel structure fabricator and EPC contractor based in Jining, Shandong, China, with 17 years of experience since 2009 and delivered projects in 60+ countries. Shandong Shijie Heavy Industry Co., Ltd. and its sister company, Henan Hengfeng Steel Structure Engineering Co., Ltd., operate as one manufacturing group under the same ultimate ownership. SynJect is the group’s export brand.
Steel Space Frame Roof Systems for Stadiums & Halls
In architectural domains—such as large-scale sports stadiums and international exhibition centers—that impose rigorous demands on roof span, structural stability, and long-term durability, steel grid structures have emerged as the benchmark choice for roofing construction. 3D truss roof system for large-span venues. Double/triple-layer space frame with hollow steel sections (Q355B/ASTM A572) and bolted spherical nodes. Column-free spans up to 150m+. Customizable roof shapes (domed, arched, flat). Hot-dip galvanized. 50+ year life. AISC/IBC compliant. Furthermore, grid steel structures strike a balance between individuality and practicality. They allow for flexible customization of roof shapes to meet the functional requirements and architectural aesthetic needs of different venues, encompassing the grandeur of domes, the fluid rhythm of arches, and the simplicity and orderliness of flat roofs, ensuring that the building’s exterior perfectly aligns with its functional needs.
Large Span Steel Space Frame Structures | Cost-Effective Roofing
Core Features & Advantages
Spatial grid steel grid roof structures utilize a spatial truss system, offering high overall rigidity and uniform load distribution, thereby enabling column-free spaces with large spans. They exhibit excellent seismic performance and strong structural stability. Most components are prefabricated in factories to standardized specifications and can be paired with various roofing materials to meet requirements for natural lighting, thermal insulation, and waterproofing. The structures are corrosion-resistant and durable, and their overall cost is highly competitive.
♦ 150m+ clear span, column-free;
♦ 30% lighter, faster assembly;
♦ Zero maintenance, 50+ years;
♦ Any roof shape;
♦ Weather resistant.
Competitive Advantage
♦ High end steel building design
♦ Intelligent digital manufacturing technology
♦ Customized steel components
Applications
Spatial grid steel structure roofing is suitable for a wide array of applications and is frequently utilized in buildings requiring expansive, column-free spaces—such as large-scale industrial plants, logistics warehouses, aircraft hangars, major retail centers, and exhibition halls. It is equally well-suited for public structures—including sports stadiums, station waiting halls, airport terminals, and theaters—where it effectively meets design requirements for vast interior spaces, aesthetic appeal, and abundant natural lighting.
♦ Stadiums;
♦ Exhibition halls;
♦ Concert halls;
♦ Airports;
♦ Shopping malls;
♦ Hangars.
Product Parameter
| Products |
Prefabricated steel structure building |
| Type | H-beam, Column, Tie-rod, Truss,Box-column |
| Main Material | Q235B(ASTM A36,S235JR), Q355B |
| Surface treatment | Painting, Galvanized |
| Process-Cutting | Laser cutting, plasma cutting, flame cutting for intricate shapes |
| Forming | Rolling, and bending to meet complex structural designs |
| Welding | MIG, TIG, Submerged arc |
| Machining | Drilling, milling for precise fittings |
| Quality Control | QC inspection, third party inspection |
| Package | As requested |
Vision & Mission
We are committed to providing safe, efficient, and environmentally friendly solutions for global customers through continuous technological innovation and exceptional product quality, driving industry progress and collectively creating a better future.
CONTACT
MORE PRODUCTS
SHANDONG SHIJIE HEAVY INDUSTRY CO., LTD
Headquartered in the High-Tech Development Zone of Jining, Shandong Province, Shandong Shijie Heavy Industry Co., Ltd. and its sister company, Henan Hengfeng Steel Structure Engineering Co., Ltd., operate as a unified manufacturing group under the same ultimate ownership. Globally, we deliver our end-to-end solutions through our dedicated export brand, SynJect.
Drawing on 17 years of export expertise and a proven track record across more than 60 countries, we provide integrated EPC contracting and heavy fabrication. This global reach is backed by our robust manufacturing footprint: an 80,000 m² facility with an annual capacity exceeding 500,000 tons, RMB 120 million in registered capital, and a skilled workforce of over 600 professionals.
Our core expertise spans civil construction, petrochemical facilities, long-distance pressure pipelines, heavy steel structures, pressure vessels, and skid-mounted refueling stations.
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