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 Structure Grid Lattice System
As a cornerstone of spatial structures, the engineering design and mature manufacturing processes of steel grid structures utilize high-strength steel as the primary material. Combined with standardized joints, these structures create a grid framework characterized by uniform stress distribution and exceptional rigidity, enabling a fully integrated service that spans the entire process from structural design and component prefabrication to on-site installation. Space frame systems with grid/lattice configurations for large spans. Hollow steel sections (Q355B/ASTM A572) + bolted spherical nodes. Orthogonal, diagonal, triangular patterns. Any shape: flat, curved, domed, free-form. Spans 20–200m+. CNC precision, hot-dip galvanized. 50+ year life. AISC/IBC compliant.
Steel Space Frame Manufacturer | Grid Structure Engineering
Core Features & Advantages
Steel space frame structure grid systems offer exceptional span capabilities, providing column-free, spacious interiors that greatly enhance a building’s usability. Lighter and more cost-effective than traditional designs, these systems support flexible design in a variety of shapes, meeting the structural requirements of both conventional and custom-designed buildings. They provide safe, economical, and aesthetically pleasing spatial structures for a wide range of large-scale construction projects.
♦ 200m+ clear span, column-free;
♦ 30% lighter, lower cost;
♦ Any shape (flat, curved, domed);
♦ Zero maintenance, 50+ years;
♦ Fast assembly.
Applications
Steel spatial grids consist of high-strength steel members connected at joints to form a three-dimensional grid structure. They are suitable for column-free spaces exceeding 200 meters in height, including sports arenas, aircraft hangars, convention and exhibition centers, industrial plants, transportation hubs, and commercial complexes. These structures support linear, curved, or irregular shapes, balancing structural safety, construction efficiency, and long-term durability to meet the functional and economic requirements of various buildings.
♦ 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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