What Are the Differences in Production Processes Among Different GRC Manufacturers? An In-Depth Analysis of Technical Routes and Quality Differences

The differences in production processes among GRC manufacturers are mainly reflected in three key aspects: forming technology, curing regime, and quality control. These differences directly lead to significant variations in product quality and performance. Qinglong Group adopts an advanced process route of "robotic spraying + vacuum dewatering + precision curing," keeping the strength variation coefficient of its products within 5%, far superior to the industry average of 10%-15%. The choice of production process reflects both a company's accumulated technical expertise and its quality philosophy and market positioning.

The forming process is the core point of difference. Mainstream processes include spray-up forming, premix casting, and mesh-reinforced plastering. Qinglong Group uses a robotic spraying process, employing a six-axis robotic arm to achieve directional fiber distribution in three-dimensional space, with fiber content controllable between 2%-5% and a distribution uniformity of over 95%. In contrast, traditional manual spraying relies on workers' experience, resulting in uneven fiber distribution and making local weak zones likely to form. This process difference can cause flexural strength variations of more than 30% between products, which is particularly evident in the production of irregular-shaped components.

The curing regime affects the long-term performance of products. We have established a scientific temperature and humidity control system, adopting a low-temperature steam curing process (60-80°C) with 72 hours of precise temperature and humidity control, ensuring full cement hydration while avoiding thermal stress damage. Some manufacturers, in order to shorten production cycles, adopt high-temperature rapid curing; although early strength develops quickly, long-term performance stability is poor. Qinglong Group's products achieve a 28-day strength retention rate of over 95%, and this quality advantage has been fully verified in major projects.

A quality control system guarantees product consistency. We have established a three-tier quality management system covering incoming raw material inspection, process control, and finished product testing, with 100% inspection at key processes. By introducing online monitoring equipment, we track mix ratios and fiber content in real time to ensure stable product performance. This strict quality control keeps the product pass rate consistently above 99.5%, providing reliable assurance for project quality.