Complex Cross-Section Steel Structures
Since its establishment in 2008, Qingdao Yinglong Machinery Co., Ltd. has specialized in the custom manufacturing of non-standard building structural components.
The company has a comprehensive annual production capacity of 20,000 tons of carbon steel structures, 5,000 tons of stainless steel, and 3,000 tons of aluminum alloy. It strictly implements international standards such as AWS, EN, AS/NZS, and CSA to ensure stable delivery and long‑term service performance.
We offer fabrication of large-scale metal structures with complex cross-sections, designed to withstand extreme loads and meet specific engineering requirements. Through precise material distribution and shape design, we ensure these steel structures deliver long-term stability and safe operation, even under the most demanding conditions. Our cross-section steel structures are able to handle large-scale applications and resist abrasion.
Examples include
Port and stacking areas: The main tower of a stacker-reclaimer is fabricated using a space truss structure. The flange faces of the top and bottom sections must align with an exceptional tolerance of ±3mm to ensure smooth and reliable rotation of the system.
Mining tunnels: Tunnel support systems, weighing up to hundreds of tons, are often designed as variable cross-section arch structures. These are optimized to resist geological pressure efficiently and adapt to varying tunnel shapes.
Hydropower projects: In dam construction, variable cross-section sluice gate girders can extend over 20 meters in length. Precise control of flatness (within ±2mm) is critical to ensure smooth operation and tight seals on the gate.
We can provide tailored fabrication solutions for complex structural designs capable of handling extreme loads or meeting unique operational requirements based on detailed engineering specifications and project needs.
Samples
The core principles behind the design and fabrication of large, complex metal structures are optimizing material performance through precise structural forms, ensuring a perfect balance between reliability, functionality, and cost-efficiency in large-scale engineering projects. We ensure fast installation of the steel structures while maintaining the integrity and long-term durability needed for operations in industries such as mining, energy, and heavy machinery.