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.
Large Span Space Grid Steel Structure for Coal Shed Roof
The spatial grid steel structure constitutes a spatially integrated skeletal system in which loads are distributed collectively. Composed of an orderly assembly of structural members, it is simultaneously lightweight and robust, enabling the construction of large-span, column-free spaces. Most of its components are prefabricated in a factory, facilitating convenient and rapid on-site installation and ensuring high construction efficiency; this design successfully harmonizes lightweight characteristics with high structural strength. The structure exhibits exceptional overall integrity, resists deformation over long-term use, and demonstrates outstanding and stable comprehensive performance. 3D truss system (triangular/pyramidal units) for ultra-large spans. Hollow steel sections (Q355B/ASTM A572) with bolted spherical nodes. Lightweight, high rigidity. Span 30–150m+. Hot-dip galvanized. 50+ year life. AISC/IBC compliant.
Large-Span Spatial Grid Roof
Core Features & Advantages
Large-span spatial grid roofs offer an open, airy space and a high degree of design flexibility, making them suitable for a wide range of applications. With a rational structural design and scientifically engineered load-bearing system, they provide outstanding resistance to wind, snow, and seismic forces, ensuring greater safety. Factory-manufactured components offer high precision and allow for rapid installation, significantly shortening construction schedules and reducing overall construction costs.
♦ 150m+ clear span;
♦ 30% lighter, less steel;
♦ Fast assembly;
♦ Zero maintenance, 50+ years;
♦ Any shape;
♦ Weather resistant.
Applications
Large-span spatial grid roofs offer expansive, column-free interiors. They are suitable for public cultural and sports facilities—such as stadiums, exhibition centers, and cultural and recreational hubs—and also meet the spatial demands of major transportation venues, including airport terminals and transit hubs. Furthermore, they are widely utilized in commercial and industrial structures—such as large-scale logistics warehouses, industrial plants, and aircraft hangars—thereby fully satisfying the functional and operational requirements of a diverse range of large-span buildings.
♦ Stadiums;
♦ Exhibition halls;
♦ Airports;
♦ Shopping malls;
♦ Factories;
♦ 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.
PRICE YOUR BUILDING
INDUSTRIAL STEEL BUILDINGS
