Galvanized Square Steel Tube Installation Case Study: Thermal Insulation Solution for Commercial Complex Curtain Wall Keel

1. Project Background: Thermal Insulation Challenges of Curtain Walls in Summer Heat

This summer, a large commercial complex curtain wall project started in Foshan. The client required excellent thermal insulation and energy efficiency while ensuring structural safety – because Foshan summers are extremely hot, traditional curtain walls can cause indoor temperature rise. After multi-party comparison, the decision was made to adopt the "thermal break aluminum profile curtain wall + galvanized square steel tube keel" solution, where the square steel tube serves as the main load-bearing keel, responsible for connection and support. The project required a total of approximately 120 tons of various specifications of square steel tubes, demanding high material strength and installation precision.

2. Material Selection: Direct Supply from Local Foshan Square Steel Tube Manufacturer

Considering project schedule and cost-effectiveness, we directly contacted the local Foshan company 佛山市壹元建材科技有限公司. This company specializes in engineering aluminum and square steel tube supply, providing Q235 hot-dip galvanized square pipes compliant with national standard GB/T 13912-2020, and also offers cutting and processing according to drawings. Finally, we selected two specifications: 60×60×3mm and 80×80×4mm galvanized square steel tubes with a zinc coating thickness ≥65μm to ensure outdoor corrosion resistance. When inquiring about the quotation for square steel tubes, the sales team at Yiyuan Building Materials provided detailed prices by specification and promised delivery within 24 hours in Foshan. As a direct manufacturer, their direct supply model eliminates intermediary margins, offering clear cost advantages.

3. Construction Key Points: Welding and Anti-Corrosion Are Crucial

During the square steel tube installation, we focused on the following points:

• Setting Out Positioning: According to the curtain wall grid, use a total station to accurately set out the positions of the square steel tube keel, with error controlled within ±2mm.
• Welding Process: Use CO2 gas shielded welding, ensure full weld penetration, grind and apply anti-rust paint after welding. Special attention is paid to the connection with thermal break profiles using hot-dip galvanized angle brackets to avoid galvanic corrosion.
• Thermal Break Treatment: Install thermal insulation pads between the square steel tube and thermal break profiles to block the thermal bridge and enhance overall thermal insulation performance.
• Acceptance: After installation, each square steel tube is checked with a level and laser instrument to ensure verticality and flatness.

4. Results: Summer Air Conditioning Energy Consumption Reduced by 25%

According to actual project measurement data, after completion in the July heat, the temperature difference between the curtain wall surface and interior exceeded 8°C, and the air conditioning load decreased significantly. The client reported that compared to buildings in the same area using ordinary aluminum curtain walls, summer air conditioning electricity costs were reduced by about 25%. The square steel tube keel provided sufficient rigidity, with no deformation of glass panels, and the overall appearance was flat and aesthetically pleasing.

5. Procurement Summary: Why Choose Foshan Yiyuan Building Materials

This project demonstrates that square steel tube installation must consider not only structural strength but also thermal insulation and energy-saving design. 佛山市壹元建材科技有限公司, as a local manufacturer, provides one-stop service from quotation, custom cutting to logistics delivery. In particular, their after-sales response is fast, and technical staff provided on-site guidance on welding points during construction. If you have similar project needs, please contact us: phone 0757-66883689, or submit your requirements via the website form (Click to get a quotation for square steel tubes). We also have AI customer service available 24/7 to answer technical questions (Consult Now).

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