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.
Convention Center Steel Space Frame Grid Structure
This steel space-frame roofing system, designed for gymnasiums and auditoriums, features a structurally engineered design that enables column-free coverage over extremely large spans, creating an open and airy interior space. Combining exceptional structural safety, long-term durability, and highly competitive cost-effectiveness, it is the optimal, cost-efficient solution for roofing projects in large public buildings. Professional manufacturer of space frame structures for large-span projects. Grid systems with hollow steel sections (Q355B/ASTM A572) and bolted spherical nodes. Spans 20–200m+. Any geometry (flat, curved, domed). CNC precision, hot-dip galvanized. 50+ year life. AISC/IBC compliant. ISO certified.
Steel Space Frame Roof Systems for Stadiums & Halls
Core Features & Advantages
Steel spatial truss roof systems break free from the constraints of standardization, supporting customization for a variety of roof shapes—including domed, arched, and flat—allowing for the flexible creation of exterior forms that align with a venue’s functional purpose and architectural aesthetic requirements. This ensures that the roof not only fulfills its practical purpose but also serves as a signature feature that enhances the building’s distinctiveness, achieving a harmonious balance between functionality and visual appeal.
♦ 200m+ clear span;
♦ 30% lighter;
♦ Any shape;
♦ Zero maintenance, 50+ years;
♦ Fast assembly;
♦ Turnkey service.
Applications
Steel space frame roof systems offer exceptional versatility. Their unique design minimizes the number of roof support columns, creating a more open and flexible interior space. They are ideally suited for a wide range of buildings, including sports arenas, convention centers, airport terminals, large shopping malls, industrial plants, aircraft hangars, and museums. Fully meets the design requirements for roofs with long spans, attractive aesthetics, and high safety standards across various building types.
♦ Stadiums;
♦ Convention centers;
♦ Airports;
♦ Shopping malls;
♦ Factories;
♦ Hangars;
♦ Museums.
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
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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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