High-Frequency Welded I-Section girder manufacturer

Precision Steel Solutions Builds the Future

Zhongda Steel, founded in 2004, makes high-performance steel for worldwide businesses in Shenyang's innovation cluster.

Our ISO and EN-certified 120,000◡ factory produces 60,000 tons annually.

Our expertise includes weather-resistant steel for -60°C, accurate cutting (±0.2mm), and BIM-based prefabrication.

We build durable infrastructure for China Railway, CSCEC, and BMW, including Arctic bridges in Russia, mining gear in Australia, and industrial centers in Vietnam.

Every project combines speed, creativity, and quality.

We use modern materials and engineering to address complicated problems from design to delivery.

We help build safer bridges, efficient industries, and durable buildings globally.

Steel for the world's harshest environments—engineered for reliability, designed for future.

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Over 20 years, Shenyang Zhongda Steel

Structure Engineering Co. , Ltd.

has created high-frequency welded I-section girders that redefine structural reliability.

Our revolutionary production method melts steel plates precisely to manufacture load-bearing girders.

Efficient girders speed construction and decrease onsite welding.

Industrial buildings, bridges, and multi-story structures with lengthy spans benefit from their uniform cross-section, which distributes stress.

ISO 9001 quality inspections and material traceability are performed on every girder.

We adapt flange thickness, web height, and surface treatments for project-specific loads and environments.

Our earthquake-resistant, energy-efficient warehouses provide safety and design flexibility.

High-frequency welding reduces heat distortion, making steel maintenance-free for decades.

These girders are supremely durable, precise, and adaptable for your next project.