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.
Professional Customization of Steel Frame Industrial Park Office Building
We offer comprehensive, professional, and customized services for steel structure buildings, covering conceptual design, precision fabrication, on-site installation, and after-sales support. Based on our clients’ requirements for floor area, functional layout, load-bearing standards, and aesthetic style, our technical team develops tailored structural solutions using high-strength steel, standardized fabrication processes, and optimized construction systems. Our custom steel structures are characterized by rational design, safety and reliability, flexible spatial configurations, and rapid construction, enabling clients to achieve efficient construction and long-term, stable use while delivering excellent value for money.

Flexible Steel Frame Layouts Enhance Spaces
Core Features & Advantages
Our professional custom steel structures are designed to fully meet clients’ specific project requirements while maximizing structural performance and cost-effectiveness. We offer flexible design solutions tailored to building height, span, load requirements, and functional layouts, ensuring optimal stress distribution and high safety standards. Utilizing high-quality steel and precision factory manufacturing processes, these structures deliver exceptional durability, seismic resistance, and wind resistance. Our modular construction approach significantly shortens project timelines and minimizes on-site waste. Additionally, our integrated customization services effectively control overall costs and ensure consistent construction quality.
♦ Tailored Custom Design
♦ High Strength & Structural Safety
♦ Efficient Prefabricated Construction
♦ Flexible Space Layout
♦ Cost-effective & Easy Maintenance
Applications
Our custom-designed steel-frame structures offer exceptional versatility and adaptability, making them widely used across various architectural sectors. With their tailored designs and reliable structural performance, they can meet the diverse functional requirements of manufacturing, operations, office spaces, commercial facilities, and public services, and are suitable for projects of all scales and in a wide range of settings.
♦ Industrial Office Building
♦ Multi-story Commercial & Complex Buildings
♦ Sports & Exhibition Venues
♦ Office Buildings & Business Parks
♦ Public & Service Buildings
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
















