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

The enduring beauty of architectural curtain walls begins with the precise protection of every connection. In the integrated application of GRC curtain walls and steel structures, anti-rust treatment is not only the baseline of engineering quality but also an extension of a building's vitality. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group leverages its full-chain technical capabilities to provide systematic solutions for this critical stage, from design to maintenance.

GRC Curtain Wall and Steel Structure Connections: The Technical Logic and Industry Pain Points of Anti-Rust Treatment

In the curtain wall systems of high-end buildings such as grand theaters and commercial complexes, GRC components have become the design preference thanks to their advantages of light weight, high strength, and flexible shaping, yet the corrosion of metal connectors remains an ongoing engineering hazard. Humid environments, temperature variations, and erosion by industrial corrosive media can degrade the strength of steel structure connectors, ultimately threatening the overall safety of the curtain wall. Through tracking studies of more than a thousand domestic projects, Qinglong's technical team found that approximately 37% of curtain wall repair cases stem from corrosion failure at connection nodes—a figure that has prompted the industry to set higher standards for anti-rust treatment processes.

Multi-Dimensional Anti-Rust Treatment System: From Material Selection to Process Innovation

Combining the characteristics of GRC materials with the load-bearing requirements of steel structures, Qinglong Group has established a "three-level protection" treatment system. At the material level, hot-dip galvanized steel (zinc layer thickness ≥85μm) is preferred as the base material for connectors, paired with a fluorocarbon coating (dry film thickness 50–80μm) to form a physical barrier; for projects in high-humidity regions, an innovative zinc-aluminum alloy coating combined with nano-ceramic sealing technology raises salt spray resistance to over 5,000 hours. In terms of workmanship, a strict four-step process of "surface pretreatment → primer spraying → intermediate coat filling → topcoat sealing" is rigorously executed, ensuring coating adhesion meets the Class 0 requirement of the GB/T 9286 standard.

Key Quality Control Points: Precision Management Across the Full Life Cycle

As an enterprise that participated in drafting the Technical Standard for the Application of Glass Fiber Reinforced Cement (GRC) in Buildings, Qinglong integrates quality control throughout the entire process of detailed design, production, and installation. During the design phase, BIM technology is used to simulate the stress state of nodes and optimize connector arrangement; in production, automated spraying lines ensure coating uniformity, with each batch sampled for adhesion and weather resistance testing; on-site installation implements a dual safeguard of "torque control + anti-corrosion sealing," and all connection nodes are fitted with RFID chips to enable quality traceability. This full-chain control model has enabled projects undertaken by Qinglong, such as the Century Plaza renovation on Nanjing East Road, to record zero corrosion-related failures over a 10-year service period.

Industry Collaboration and Technological Innovation: Building a New Ecosystem for Anti-Rust Treatment

In response to the challenges of complex building environments, Qinglong has partnered with university research centers to develop a dedicated anti-corrosion adhesive for GRC-steel structure connections, resolving the compatibility issues between traditional sealing materials and GRC substrates. Meanwhile, as Vice Chairman Unit of the China GRC Association, Qinglong actively promotes the upgrading of industry standards, incorporating the "15-year anti-rust guarantee period for connection nodes" into the drafting framework of the General Technical Conditions for Ultra-High Performance Concrete (UHPC) Non-Load-Bearing Components. This spirit of open collaboration is a vivid embodiment of Qinglong's core values of "integrity, perseverance, trust, and teamwork."

From the curved curtain walls of the Guangzhou Opera House to the shaped components of overseas landmark projects, Qinglong has redefined the safety standards of GRC curtain walls with 28 years of technical accumulation. Driven by its mission to "create aesthetically beautiful architecture," anti-rust treatment is not merely a technical requirement but a promise to the life of the building—ensuring that every connection withstands the test of time and every building becomes an enduring part of the urban landscape.