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.
Specialized Manufacturer of Customized Commercial Complex Steel Structures
As a specialized manufacturer of custom steel structures, we offer end-to-end services ranging from conceptual design and fabrication to on-site installation. We provide tailored structural solutions tailored to specific architectural contexts, load requirements, and functional needs. With proven production processes and a rigorous quality control system, we are capable of precisely executing custom steel structures for large-span, high-rise, and specialized applications. Professional manufacturer of high-rise steel buildings (10–100+ stories) for commercial/residential use. Primary steel: ASTM A992 / A572 Gr.65 / Q355B. Moment-resisting frames + composite metal deck floors. Advanced CFST options available. CNC precision, fire-rated coating. 50+ year life. ISO certified.
Custom Steel Frame Structures Solutions for Industrial Buildings
Core Features & Advantages
Utilizing standardized production lines and rigorous quality control, we provide end-to-end services ranging from detailed design and fabrication to installation. We ensure that our steel structural components feature high precision and consistent performance, with seismic resistance, fire resistance, and structural strength all meeting the industry’s highest standards.
♦ 50% faster build;
♦ Magnitude 8+ seismic resistant;
♦ 40% lighter;
♦ 12–15m clear spans;
♦ 50+ year life;
♦ One-stop service.
Applications
As a professional supplier of steel structures, our steel frame systems are primarily used in high-rise buildings, industrial plants, schools, sports venues, and municipal public buildings. We provide customized steel structure solutions tailored to different regions and building types, balancing space utilization, structural safety, and construction efficiency to deliver highly adaptable steel frame products for a wide range of projects.
♦ Commercial offices;
♦ Residential towers;
♦ Mixed-use;
♦ Hotels;
♦ Hospitals;
♦ Landmark towers.
Product Parameter
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Product name
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Customized steel structures for cement production
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Material
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Q235B, Q345B
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Surface treatment
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1. Painting; 2. Galvanized;
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Certification
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SO9001, ISO14001, OHSAS18001, EN1090, ISO3834
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Standard
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GB, ASTM, EN, ISO, AS/ANS,JIS,JWB
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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
