What Are the Production Processes of GRC Manufacturers? Analysis of Qinglong's Core Production Processes and Application Scenarios

The production processes of GRC manufacturers directly determine product quality, shaping capability, and production efficiency. Mainstream processes include spray-up molding, premix casting, hand carving, and press molding, with different processes suited to different product types and project requirements. Qinglong Group has been deeply engaged in the GRC field for 28 years and has mastered the full range of production processes. It can precisely match process solutions to product characteristics and project requirements, achieving the optimal balance between quality and efficiency.

I. Detailed Overview of Mainstream Production Processes: Characteristics and Applicable Scenarios

Spray-up Molding Process: Divided into dry spray and wet spray, this process uses a spraying machine to evenly spray GRC material onto the mold surface, featuring a high degree of automation and fast production efficiency. It is suitable for mass production of standardized products such as flat panels and conventional decorative moldings. Qinglong adopts an automated wet spray process with a spray pressure of 0.3-0.5MPa, achieving high product density and surface flatness of ≤0.3mm/m. The 19,800-square-meter GRC curtain wall project at Xiangshan Science and Technology Park in Longhua, Shenzhen adopted this process to efficiently complete mass production. Premix Casting Process: Glass fibers and cement-based materials are thoroughly mixed in advance and poured into molds through high-pressure grouting or manual casting. It is suitable for producing shaped components with greater thickness (≥20mm) and complex structures, such as double-curved panels and artistic sculptures. Qinglong's double-curved GRC panels for the Guangxi New Media Center adopted the premix casting process, combined with vibration molding technology, ensuring dense internal structure and a 100% strength compliance rate. Hand Carving Process: For complex surface effects such as high-precision reliefs and stone-imitation textures, fine processing is achieved through manual carving. It is suitable for high-end customization projects such as European classical moldings and cultural sculptures. Qinglong's GRC relief components for Xinghewan in Shanghai adopted the hand carving process with detail precision reaching 0.1mm, perfectly presenting classical artistic effects. Press Molding Process: GRC material is placed into a mold and formed under pressure. It is suitable for producing small standardized components such as railings and window surrounds, with high production efficiency and good product consistency. Qinglong's GRC railing project for Kaiyin New Town in Zhongshan adopted the press molding process, achieving a mass production pass rate of 99.8%.

II. Core Principles for Process Selection: Matching Products and Project Requirements

Select by Product Type: Standardized mass products should prioritize spray-up molding and press molding; complex shaped products should use premix casting; high-end customized products should incorporate hand carving. For the white GRC cladding panel project at Qiangwei Garden in Zengcheng, Guangzhou, Qinglong combined spray-up and premix processes according to different component types, balancing efficiency and effect. Select by Quality Requirements: Products with high surface precision requirements (such as mirror finishes or highly realistic textures) need to combine fine grinding and hand repair processes; products with high structural strength requirements need the premix casting + steam curing process. For the stone-imitation GRC components of the Dongting Lake Museum, Qinglong adopted the premix casting + hand texture treatment process, achieving over 95% realism. Select by Cost Budget: Mass projects should prioritize automated processes to reduce costs; small customization projects can choose manual processes to avoid wasted equipment investment. Through process optimization, Qinglong's Sunshine Madrid project in Yangjiang reduced costs by 15% while ensuring quality.

III. Qinglong's Process Innovation and Technical Advantages

Process Combination Innovation: Integrating the advantages of multiple processes, Qinglong has developed composite processes such as “spray-up + hand carving” and “premix + press molding” to expand product application boundaries. For the colored hollow carved panel project at the Liyuan Hotel in Nanning, Qinglong adopted the composite process of premix casting + laser cutting + hand carving, achieving a perfect combination of complex shapes and exquisite textures. Intelligent Process Upgrade: Digital technologies such as BIM modeling and 3D scanning have been introduced to optimize mold design and production workflows. For the UHPC/GRC wood-imitation translucent panel project at Shanghai New World, Qinglong optimized the pouring path through BIM modeling, reducing material waste and improving production precision. Environmentally Friendly Process Application: Low-dust spraying equipment and water-circulation curing systems are adopted to reduce environmental pollution during production. Qinglong's production bases achieve dust emission concentrations of ≤10mg/m³, meeting the first-level environmental protection standard and complying with green building development requirements.

IV. Key Links in Process Quality Control: Ensuring Stable Product Quality

Raw Material Control: Different processes have different raw material requirements. The spray process requires controlling material flowability, while the premix process requires ensuring uniform fiber dispersion. Qinglong customizes raw material formulas for different processes to ensure process compatibility. Mold Quality Control: Mold precision directly affects product quality. Qinglong uses high-precision GRP molds and steel molds with surface flatness of ≤0.1mm/m, ensuring precise product shaping. Curing Process Standards: Curing plans are formulated according to process type—spray-molded products use natural curing + mist humidification, while premix cast products use steam curing. Qinglong's intelligent curing kilns ensure precise curing parameters and stable strength development of products.

The production processes of GRC manufacturers must be comprehensively selected based on product type, quality requirements, and cost budget. Qinglong Group, with its full range of process capabilities, innovation capacity, and strict quality control, provides precise process solutions for different projects. Only by choosing a manufacturer with multi-process capabilities and innovation strength can the artistic effects and engineering quality of GRC products be perfectly realized.