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.
Design and Fabrication of High-Rise Frame Steel Structures
Specialize in the design and fabrication of steel structural frames for high-rise buildings, offering customized steel structural solutions for commercial, residential, and various other high-rise projects. Leveraging advanced technology and high-quality materials, our steel structural frames deliver exceptional strength, stability, and seismic resistance, enabling them to meet the diverse challenges posed by high-rise construction. Design-to-fabrication for high-rise steel buildings (100+ stories). Steel: ASTM A992/A572 Gr.65. Moment/braced frames, CFST. CNC ±2mm precision. Fire-rated + anti-corrosion. 50+ year life. AISC/IBC compliant.

High-Rise Steel Frame Structures | Greater Design Flexibility and Space Utilization
Core Features & Advantages
High-rise steel frame structures—leveraging high-strength steel and lightweight design—reduce a building’s self-weight by 40% compared to concrete structures, thereby significantly lowering foundation loads and providing a more stable lateral-force-resisting system for super-high-rise buildings. By integrating structural components with cantilevered elements and skybridges, these structures facilitate dynamic spatial interaction. Regardless of the desired architectural form or functional requirements, this system adapts with ease.
♦ In-house design & fabrication;
♦ 50% faster construction;
♦ Magnitude 8+ seismic resistant;
♦ 40% lighter, 12–15m spans;
♦ ±2mm precision;
♦ Fire-rated, 50+ years;
♦ 100% recyclable.
Applications
High-rise steel frame structures, through custom design, are widely utilized in urban landmark complexes, super high-rise office towers, and high-end commercial centers. By incorporating large-span, column-free spaces and cantilevered structural designs, they effortlessly facilitate three-dimensional interactive environments—such as soaring atriums and skybridges—thereby meeting the flexible requirements of modern office spaces.
♦ Commercial offices;
♦ Residential towers;
♦ Mixed-use;
♦ Hotels;
♦ Government buildings;
♦ Landmark projects.
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.
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