Anti-Rust Treatment Methods and Quality Control Points for GRC Curtain Wall to Steel Structure Connections

In the field of architectural curtain walls, the connection joints between GRC curtain walls and steel structures are like the “structural hub” of a building, and the quality of their anti-rust treatment directly affects the building's safety and durability. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group fully understands the central role of anti-rust treatment in curtain wall projects. With an attitude of “meticulousness and excellence,” the group has consistently provided full-chain anti-rust solutions for landmark buildings worldwide.

Corrosion Risks and Industry Pain Points of GRC Curtain Wall-to-Steel Structure Connections

GRC curtain walls, with their advantages of lightweight strength and flexible styling, are widely used in high-end buildings such as theaters and commercial complexes. However, metal connectors are highly susceptible to corrosion under the influence of environmental factors such as humidity and temperature variations. A landmark project once suffered from improper anti-rust treatment of connection joints, which accelerated the corrosion rate of the steel structure by 30%, increasing maintenance costs and creating safety hazards. Through practice on 2,000+ projects, Qinglong Group has found that 80% of curtain wall connection failures stem from oversights in early-stage anti-rust processes. Therefore, establishing a systematic anti-rust treatment system has become key to engineering quality control.

Multi-Dimensional Anti-Rust Treatment Processes: Full-Process Control from Materials to Construction

Combining the characteristics of GRC materials with the requirements of steel structure connections, Qinglong Group has innovatively developed a “Triple Protection Process”: First, hot-dip galvanizing is applied to achieve a zinc layer thickness of over 85μm on connectors, with salt spray resistance exceeding 5,000 hours. Second, Qinglong's specially formulated nano-ceramic anti-rust coating is applied at the joints to form an elastic sealing barrier. Finally, BIM technology is used to simulate rainwater flow paths and optimize joint drainage design, reducing moisture accumulation at the source. This process has been successfully applied to projects such as the Nanning ASEAN Cultural and Art Center. After 10 years of tracking and monitoring, the corrosion rate of connection joints remains below 0.5%.

Quality Control Essentials: Synergy of Standardization and Customization

As a participating contributor to the Technical Standard for Glass Fiber Reinforced Cement (GRC) Building Applications, Qinglong Group has established a strict quality control system: In the detailed design phase, parametric software is used to perform mechanical simulations of connection joints, ensuring that the anti-rust layer thickness matches structural loads. In production, automated zinc spraying equipment achieves coating uniformity with an error of ≤2%. During construction and installation, a “QR code traceability system” is implemented, with each batch of connectors accompanied by material certificates and anti-rust treatment records. In addition, for projects in high-humidity coastal environments, stainless steel 316 connectors are additionally used, combined with sacrificial anode protection technology, extending service life to over 50 years.

Full Lifecycle Service: Closed-Loop Assurance from Project Consulting to After-Sales Maintenance

Relying on its nationwide network of offices, Qinglong Group provides customers with full-chain services covering “detailed design - manufacturing - construction and installation - after-sales maintenance.” During the after-sales phase, regular drone inspections and electromagnetic induction testing are conducted to promptly identify potential corrosion risks. For overseas projects such as a commercial complex in Malaysia, an innovative “remote monitoring + localized response” model is adopted, with IoT sensors transmitting joint temperature and humidity data in real time to ensure the anti-rust system remains continuously effective. This philosophy of “prevention first, proactive maintenance” has kept customer satisfaction for Qinglong GRC curtain wall projects above 98% for five consecutive years.

Anti-rust treatment is the invisible cornerstone of GRC curtain wall engineering and a touchstone for measuring a company's technical strength. Qinglong Group will continue to leverage its innovation capabilities as a National High-Tech Enterprise, integrating 28 years of industry experience, to provide designers and owners with anti-rust solutions that combine safety and economy, ensuring that every connection joint becomes a reliable guarantee for a building's century-long legacy.