What Are the Production Processes of GRC Manufacturers? Mainstream Production Processes and Application Scenarios

A GRC manufacturer's production processes directly determine product quality, shape realization capability, and applicable scenarios. Mainstream processes include the spray-up process, premix process, mold forming process, and hand-crafting process. Each process has its own advantages and disadvantages and suits different types of GRC products. Based on 28 years of technical expertise, Qinglong Group has mastered a variety of core production processes and can precisely match them to project requirements, turning creative designs into reality with assured quality.

#Spray-up Process: Efficient for Large-area Standard Products

The spray-up process is one of the mainstream GRC production processes, suitable for large-area flat panels, standard curtain wall panels, and similar products. In this process, cement slurry and alkali-resistant glass fibers are mixed through specialized spray equipment and sprayed at high speed onto the mold surface to form dense GRC panels. Qinglong uses automated spray equipment to precisely control fiber content and spray thickness, achieving high production efficiency and uniform product strength. It is suitable for large-area projects such as the 120,000-square-meter roof cladding of the Hainan International Convention and Exhibition Center. The advantages of this process are high production efficiency and controllable costs; the disadvantage is the difficulty of achieving complex shapes.

#Premix Process: Precise for Complex Shaped Components

The premix process is suitable for complex shaped components, hollow carved panels, large sculptures, and similar products. In this process, raw materials such as cement, aggregates, alkali-resistant glass fibers, and additives are mixed evenly in advance and then poured into custom molds. Through vibration forming or high-pressure forming, the components are ensured to be dense and precisely shaped. The hyperbolic GRC exterior wall panels Qinglong created for the Guangxi New Media Center adopted the premix process; by precisely controlling mixing time and forming pressure, the complex curved surfaces were perfectly reproduced. The GRC sculptures made for the Shanghai Astronomy Museum also relied on the premix process to ensure shape accuracy and structural strength. The advantages of this process are great design freedom and high product density; the disadvantages are long production cycles and higher costs.

#Mold Forming Process: Core Support for Standardization and Customization

The mold forming process is the foundation of all GRC product production, and mold quality directly affects product precision. Qinglong selects different molds according to product type: standard products use steel or plastic molds, which are reusable and ensure dimensional consistency; customized products use polyurethane or silicone molds, which can accurately replicate complex textures and shapes. For example, the stone-look GRC panels made for the Panzhihua project in Sichuan achieved over 95% realism through polyurethane molds. In addition, Qinglong uses BIM technology to optimize mold design, avoiding conflicts in production and installation in advance and improving production efficiency.

#Surface Treatment Process: Enhancing Decorative Effects and Durability

The surface treatment process is an important guarantee of the decorative effect and durability of GRC products. Qinglong's surface treatment processes include grinding and polishing, coloring, and stone-look texture treatment. Grinding and polishing improve surface flatness, the coloring process allows customized colors, and stone-look texture treatment achieves the texture of natural stone through mold engraving and hand finishing. For example, the GRC stone-look components made for the Dongting Lake Museum perfectly reproduce the solid feel of traditional stone through the surface treatment process, while also improving the product's weathering resistance.

GRC manufacturers have diverse production processes, with different processes suited to different product needs. Qinglong Group has mastered a full range of processes including spray-up, premix, mold forming, and surface treatment, and can select the optimal process solution according to the project's product type, shape requirements, and budget. Only by choosing a manufacturer with mature processes and comprehensive technology can both product quality and decorative effects be enhanced.