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, modeling 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, mastering a full range of production processes, and can precisely match process solutions to product characteristics and project requirements, achieving an optimal balance between quality and efficiency.

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

Spray-up Molding Process: Divided into dry spraying and wet spraying, GRC material is evenly sprayed onto the mold surface by a spray machine, offering high automation and fast production efficiency. It is suitable for batch 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, delivering high product density and surface flatness of ≤0.3mm/m. The 19,800-square-meter GRC curtain wall project at Shenzhen Longhua Xiangshan Science and Technology Park adopted this process, completing batch production efficiently. Premix Casting Process: Glass fibers and cement-based materials are mixed evenly in advance and fed into molds by high-pressure grouting or manual pouring. It is suitable for producing special-shaped components with greater thickness (≥20mm) and complex structures, such as double-curved panels and artistic sculptures. The double-curved GRC panels of Qinglong's Guangxi New Media Center adopted the premix casting process combined with vibration molding technology, ensuring dense internal structure of components 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 performed through manual carving. It is suitable for high-end customization projects such as European classical moldings and cultural sculptures. The GRC relief components of Qinglong's Shanghai Xinghewan project adopted the hand carving process with detail precision up to 0.1mm, perfectly presenting classical artistic effects. Press Molding Process: GRC material is placed into molds and pressed into shape. It is suitable for producing small standardized components such as railings and window surrounds, with high production efficiency and good product consistency. The GRC railing project of Zhongshan Kaiyin New Town by Qinglong adopted the press molding process, achieving a batch production pass rate of 99.8%.

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

Selection by Product Type: Standardized mass products prioritize spray-up molding and press molding; complex special-shaped products choose premix casting; high-end customized products combine hand carving. In the white GRC cladding panel project of Guangzhou Zengcheng Qiangwei Garden, Qinglong combined spray and premix processes according to different component types, balancing efficiency and effect. Selection by Quality Requirements: For high surface precision requirements (such as mirror effects and highly realistic textures), fine polishing and hand repair processes are needed; for high structural strength requirements, the premix casting + steam curing process should be adopted. The stone-imitation GRC components of the Dongting Lake Museum by Qinglong adopted the premix casting + hand texture treatment process, achieving a realism rate of over 95%. Selection by Cost Budget: Mass projects prioritize automated processes to reduce costs; small customized projects can choose manual processes to avoid wasteful equipment investment. The Yangjiang Sunshine Madrid project by Qinglong reduced costs by 15% through process optimization 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 the boundaries of product applications. In the colored hollow carved panel project of Nanning Liyuan Hotel, Qinglong adopted the composite process of premix casting + laser cutting + hand carving, achieving a perfect combination of complex shapes and exquisite textures. Intelligent Process Upgrades: Introducing digital technologies such as BIM modeling and 3D scanning to optimize mold design and production workflows. In the UHPC/GRC wood-imitation translucent panel project of Shanghai New World, Qinglong optimized the casting path through BIM modeling, reducing material waste and improving production precision. Eco-Friendly Process Applications: Adopting low-dust spray equipment and water circulation curing systems to reduce environmental pollution during production. Qinglong's production base achieves a dust emission concentration of ≤10mg/m³, meeting the Class I environmental protection standard and aligning with green building development requirements.

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

Raw Material Control: Different processes have different requirements for raw materials. 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 Management: Mold precision directly affects product quality. Qinglong uses high-precision GRP molds and steel molds with a mold surface flatness of ≤0.1mm/m to ensure accurate product shapes. Curing Process Standards: Curing plans are formulated according to process type. Spray-molded products use natural curing + spray moisturizing, 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 a GRC manufacturer should be comprehensively selected based on product type, quality requirements, and cost budget. Qinglong Group, with its full range of process reserves, innovation capabilities, and strict quality control, provides precise process solutions for different projects. Only by choosing a manufacturer with multi-process capabilities and innovative strength can the artistic effects and engineering quality of GRC products be perfectly realized.