What Are the Quality Inspection Frequency and Items During Production?

In the production process of new decorative building materials such as UHPC, GRC, GRG, and GRP, quality inspection is the core link in guaranteeing product performance and safety. Qinglong Group, with 28 years of industry experience, has always applied its quality philosophy of “meticulousness and the pursuit of excellence” throughout the entire chain, providing customers with reliable customized products through scientific inspection frequencies and comprehensive inspection items. Below is a professional industry analysis of the key points of quality control in the production process.

### 1. Raw Material Entry: The “First Line of Defense” at the Source

For composite materials such as UHPC, GRC, GRG, and GRP, the quality of raw materials directly determines the performance of the final product. Qinglong Group has established a strict raw material admission mechanism, under which key materials such as high-strength cement, alkali-resistant glass fiber, and special resins must be tested upon each batch entry. Taking GRC material as an example, inspection items include the tensile strength of the glass fiber and the soundness and compressive strength of the cement, with an inspection frequency of once per batch, ensuring compliance with the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018). In addition, for UHPC components such as ultrafine silica fume and steel fibers, additional tests on particle size distribution and dispersibility are required to eliminate quality risks at the source. For more industry information: +WeChat qlfsbl123

### 2. Production Process: “Precision Control” with Dynamic Monitoring Throughout

In the component forming stage, the inspection focus and frequency differ by material. GRC components, after spray forming, must be tested for slurry consistency and fiber content every 2 hours to ensure spraying uniformity; GRG products require real-time monitoring of the initial setting time of the gypsum slurry during pouring to prevent shaping defects caused by insufficient flowability. For the ultra-high-pressure pouring process of UHPC, Qinglong Group employs an automated control system to test the concrete slump and air content of each batch, with the frequency raised to once every 30 minutes to ensure material compactness. During the curing of GRP products, the curing temperature curve must be monitored with an infrared thermometer to ensure full cross-linking of the resin, with inspections conducted twice per production shift.

### 3. Finished Product Inspection: “Final Gatekeeping” through Multi-Dimensional Verification

Finished product testing is the last checkpoint before products leave the factory, and Qinglong Group sets differentiated standards based on the characteristics of different materials. UHPC components must be tested for flexural strength (≥15MPa), elastic modulus, and chloride ion penetration coefficient, with one sample group per 100 pieces; GRC decorative moldings are tested mainly for impact resistance and surface flatness, with a sampling frequency of one group per 50 pieces, and their durability is verified through freeze-thaw cycle tests (200 cycles). GRG ceiling products must be tested for fire rating (Class A non-combustible) and sound insulation performance, with a third-party inspection report issued for each batch; GRP daylighting panels require tests for light transmittance (≥85%) and anti-aging performance. In addition, all products must pass a full visual inspection to ensure they are free of defects such as cracks and air bubbles, and comply with industry standards such as the General Technical Conditions for Ultra-High Performance Concrete (UHPC) Non-Load-Bearing Components. For more industry information: +WeChat qlfsbl123

### 4. Full-Chain Quality System: an “Industry Benchmark” Built on 28 Years of Experience

As a national high-tech enterprise and a participant in the formulation of industry standards, Qinglong Group has built a full-chain quality control system covering everything from detailed design to after-sales maintenance. Production is equipped with intelligent testing equipment, and BIM technology is integrated to make quality data traceable; in the construction and installation stage, 3D laser scanning positioning is adopted to ensure component installation accuracy with an error of ≤2mm. Over the years, relying on strict inspection processes, Qinglong has undertaken benchmark projects such as the Dongguan Women and Children's Activity Center and the Century Plaza on Nanjing East Road, with products exported to overseas markets. For clients such as real estate developers and architectural designers, choosing a manufacturer with a sound quality inspection system is not only a guarantee of project safety, but also the key to unifying design creativity and engineering quality.

Quality inspection is the “lifeline” of new decorative building material production. With 28 years of professional experience, Qinglong Group safeguards the quality of UHPC, GRC, GRG, and GRP products through scientific inspection frequencies and item settings. Going forward, Qinglong will continue to promote innovation in testing technology, fulfill its mission of “creating beautiful architecture”, and set higher quality standards for the industry.