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

The safety and durability of architectural curtain walls begin at the connection joints. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group understands that the anti-rust treatment of GRC curtain wall connections with steel structures is the lifeline of building safety. In benchmark projects such as the Dongguan Women and Children's Activity Center and Nanjing Road Century Plaza, we transform anti-rust technology into long-term building protection through full-chain quality control.

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

GRC curtain walls are widely used in high-end buildings such as grand theaters and commercial complexes, thanks to their lightweight, high-strength, and flexible shaping advantages. However, their connection joints with steel structures are exposed to outdoor environments for long periods, making them vulnerable to temperature and humidity fluctuations, acid rain erosion, and other factors—a high-risk area for corrosion. In one landmark project, connector corrosion caused GRC panel displacement, resulting in repair losses of millions. Through analysis of 200+ project cases nationwide, Qinglong Group found that 80% of curtain wall safety accidents stem from inadequate anti-rust treatment.

Three-Tier Anti-Rust Treatment System: All-Round Protection from Materials to Processes

As a National High-Tech Enterprise, Qinglong has established an industry-leading three-dimensional anti-rust system of "materials-processes-testing." On the materials side, special steel with dual protection of hot-dip galvanizing plus fluorocarbon coating withstands salt spray testing for over 5,000 hours; in terms of process, an innovative three-step method of "sandblasting rust removal – nano primer – sealant caulking" ensures connection joint sealing of up to 99%. At the Guangxi Nanning production base, every batch of steel structure connectors must pass neutral salt spray testing, and only those meeting the data standards can leave the factory.

Golden Points of Quality Control: Key Nodes Distilled from 28 Years of Experience

Qinglong has distilled 28 years of engineering experience into quantifiable quality control standards: connector spacing tolerances are strictly controlled within ±2mm, and welded areas undergo penetrant flaw detection; on-site installation implements a "double-inspection system," with the technical director and supervisor jointly confirming anti-rust coating thickness. Especially in projects in humid regions, sacrificial anode protection technology has been innovatively adopted, extending anti-rust lifespan to more than 3 times that of traditional processes. These standards have been incorporated as references in the compilation of the Technical Standard for Application of Glass Fiber Reinforced Cement (GRC) in Buildings (JGJ/T423-2018).

Full Life-Cycle Maintenance: A Commitment from Project Delivery to Century-Lasting Buildings

As an enterprise providing full-chain services covering detailed design, manufacturing, construction and installation, and after-sales maintenance, Qinglong has established an industry-exclusive "corrosion early-warning system." Through BIM technology, connection joints are digitally documented, and regular drone-based infrared inspections are conducted. Combined with climate adaptation experience from overseas projects in Malaysia, Australia, and beyond, we provide customers with 5 years of free maintenance plus lifetime technical support. This is the best practice of Qinglong's commitment to "meticulous craftsmanship and constant refinement."

From the irregular-shaped curtain walls of Canton Tower to landmark buildings in Saudi Arabia, Qinglong consistently leverages the technical strength of a National Specialized and Innovative Enterprise to transform anti-rust treatment into the safety DNA of buildings. Choosing the Qinglong GRC curtain wall system means choosing reliable protection that keeps architectural beauty enduring and evergreen.