YOUR STEEL STRUCTURE ENGINEERING EXPERT
We are an international company specializing in steel structure construction and export, with over 17 years of experience in steel structure engineering. We have provided high-quality steel structure building solutions to more than 60 countries worldwide. Our company holds international quality system certifications and possesses integrated service capabilities encompassing design, manufacturing, construction, and export.
Multipurpose Steel-Frame Portal-Type Production Facility
The prefabricated portal-frame steel structure kits utilize a modular assembly method, requiring no heavy construction machinery; standard construction personnel can erect them rapidly. Characterized by short construction periods and low costs, they significantly reduce overall investment in construction. The kits support extensive customization, allowing for flexible adjustment of structural parameters based on specific site conditions and functional requirements, and are backed by comprehensive after-sales and technical support. Complete ready-to-assemble steel building kit. Includes rigid frames (Q355B/ASTM A572), C/Z purlins, bracing, cladding, fasteners. CNC-cut, pre-drilled, hot-dip galvanized. Bolted assembly, no welding. Clear-span, 60m+ column-free. 50+ year life. AISC/IBC compliant.
Modular Steel Portal Frame Multi-Purpose Production and Warehousing Facility
Core Features & Advantages
Portal-frame steel structure building kits offer exceptional versatility; their components can be standardized and mass-produced, thereby significantly shortening delivery cycles. The structures exhibit excellent stability, resisting deformation even after prolonged use, and require only simple maintenance over time. Furthermore, they support on-demand customization of dimensions, spans, and aesthetic styles, effectively meeting the diverse requirements of industrial, warehousing, and commercial applications. This makes them a highly efficient and practical solution for prefabricated construction.
♦ Complete kit, ready to assemble;
♦ 60m+ clear span;
♦ 50% faster build;
♦ Zero maintenance, 50+ years;
♦ Fully customizable.
Applications
The portal-frame steel building component kits are suitable for a wide range of applications, and their modular design enables rapid assembly. The high-strength materials not only provide a solid structural foundation for residential buildings and campuses but also allow for the creation of custom porches for commercial spaces that combine a premium aesthetic with distinctive design. With their flexible adaptability and robust load-bearing capacity, these kits offer practical yet visually appealing spatial solutions for building entrances of all types.
♦ Workshops;
♦ Warehouses;
♦ Agricultural storage;
♦ Logistics centers;
♦ Cold storage;
♦ Vehicle maintenance.
Product Parameter
| Hot Galvanizing | Steel Beams/Column | Paint Spraying | Steel Beams/Column |
| 30m Length | Steel House | Welding H Steel | Welding H Steel |
| 200m2 | Steel Warehouse | 50m Length | Steel Warehouse |
| 50mm PU Panel | Steel Warehouse | 500m2 | Steel Warehouse |
| Package | Load Into 20gp/40gp/Hq/Ot Containers | Steel | Steel Structure Air Tower |
| Material | Steel Structure | Multistory | Multistory Steel Structure Warehouse |
| Customized | Customized | Certification | ISO, CE |
| Transport Package | Seaworthy Package in 40hc/40ot | Warranty | 1 Year |
| Steel Structure Warehouse Workshop Hanger Shed Building Storage Framework Hall Materials Construction | |
| ITEMS | SPECIFICATION |
| Main Steel: | Q355, Q235, Q355B, Q235B, etc. |
| Anti-rust protection | Hot-dip galvanized or anti-rust painting |
| Purlin and girts | Cold-rolled C or Z steel, Q355 or Q235 |
| Column & Beam: | Welded or Hot rolled H-section |
| Connection method of steel structure: | Welding connection or bolt connection |
| Wall & Roof: | Sandwich panel or steel sheet. |
| Door: | Rolled up door or Sliding door |
| Window: | Plastic steel or Aluminum alloy window |
| Surface: | Hot-dip galvanized or painted |
| Crane: | 5MT, 10MT, 15MT, and more |
| Drawings & Quotation Information: | |
| 1) Customized design is welcomed. | |
| 2) Could you tell me your steel structure project? | |
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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INDUSTRIAL STEEL BUILDINGS
