Comprehensive Structure Steel Fabrication and Installations
Comprehensive Structure Steel Fabrication and Installations

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.

Structural Steel Columns & Heavy Box Girders

Structural Steel Columns & Heavy Box Girders
Request A Quote

Steel columns are largely used in large industrial buildings and heavy structural frameworks for stable high load transfer. These box columns and girders are prefabricated in large modular sections to align with structural design of industrial buildings and construction requirements.

We manufacture our steel columns in controlled factory conditions, where advanced welding processes such as submerged arc welding and electroslag welding are used in order to achieve consistent and reliable weld quality. Internal diaphragms and stiffeners are incorporated within the box section to enhance load distribution at connection points.

The columns are fabricated in modular sections so they can be transported and assembled on site with greater efficiency, particularly in large industrial and infrastructure projects.

Samples

Bridge Box Girder
Bridge Box Girder
Tunnel Foundation Pit Support Beam
Tunnel Foundation Pit Support Beam
Highway Bridge Structure
Highway Bridge Structure
Concrete-Filled Steel Beam
Concrete-Filled Steel Beam
Support Frame for Boilers
Support Frame for Boilers
Box Section Column
Box Section Column
Equipment Support Beam
Equipment Support Beam
Wharf Fender Beam
Wharf Fender Beam

The steel box columns and girders are fabricated according to the structural drawings and connection requirements for commercial load bearing construction projects. During on-site installation, the modules can be joined in segments using welding or high-strength bolted connections. Accurate alignment is ensured to improve construction efficiency and overall assembly coordination.