How to Ensure GRC Manufacturers Provide Products Consistent with Samples

In the field of architectural decoration, GRC materials, with their lightweight, high-strength and richly formable characteristics, have become the ideal choice for many high-end projects. However, the discrepancy between samples and actually delivered products has long been a pain point in the industry; it not only affects project outcomes but may also pose safety hazards. As a Qinglong manufacturer with 28 years of full-chain experience in detailed design, manufacturing, construction and installation, and after-sales maintenance of UHPC/GRC/GRG/GRP materials, we deeply understand how vital product consistency is to the success or failure of a project. This article will share, from three dimensions—technical specifications, production control, and quality control system—how to ensure that products provided by a GRC manufacturer are highly consistent with the samples.

### 1. Technical Specifications: Locking in GRC Product Standards at the Source

The core prerequisite for ensuring that products are consistent with samples is to establish clear technical specifications. A professional GRC manufacturer will, at the project initiation stage, jointly formulate a “Technical Confirmation Document” with designers and owners, covering material proportions, process parameters, and performance indicators. Taking Qinglong GRC as an example, we strictly follow the “Technical Standard for Architectural Application of Glass Fibre Reinforced Cement (GRC)” (JGJ/T423-2018), clearly stipulating key indicators such as glass fibre content (≥4.5%), flexural strength (≥12MPa), and water absorption (≤15%). Meanwhile, 3D modeling of sample components is performed using BIM technology to generate digital archives containing texture, color, and dimensional tolerances (±2mm), which serve as the benchmark for production and acceptance. This closed-loop management of “sample-data-standard” can effectively prevent deviations caused by verbal agreements or ambiguous drawings. For more industry information: +WeChat qlfsbl123

### 2. Production Control: Full-Process Traceability Ensures GRC Manufacturing Precision

Standardized production is the key to product consistency. Qinglong GRC has established a full-process control system of “batching-forming-curing-inspection” at its production base in Nanning, Guangxi: at the raw material stage, an automated batching system is adopted to ensure that the proportioning errors of cement, glass fibre, and additives do not exceed 1%; at the forming stage, mold numbering management is employed, with laser scanning comparison between sample molds and mass-production molds to ensure cavity precision; at the curing stage, constant-temperature and constant-humidity curing kilns are used to simulate the climate conditions of the project site, avoiding performance fluctuations caused by differences in curing environments. In addition, each batch of products is embedded with an RFID chip recording production time, operators, quality inspection data and other information, achieving full traceability from sample to finished product. This industrialized production model guarantees the stability of GRC products far better than traditional handcraft workshops.

### 3. Quality Control System: Three-Level Inspection Builds the GRC Quality Defense Line

A rigorous quality control system is the ultimate guarantee of product consistency. Qinglong GRC has established a three-level inspection mechanism of “self-inspection-mutual inspection-final inspection”: production teams carry out daily initial checks on the appearance and dimensions of demolded products; the quality control department uses equipment accredited by third-party testing institutions to conduct comparative performance tests on flexural strength, elastic modulus and other properties between samples and mass-produced products; before shipment, the technical team performs a full-dimension recheck against the samples, covering detail indicators such as color difference (△E≤3) and surface flatness (≤2mm/m). For complex shaped GRC components, 3D scanning is also used to generate point cloud models, which are compared with the sample digital models for deviation analysis, ensuring a shape reproduction rate of over 98%. This “multi-level checkpoint” quality control model has helped projects such as the Century Plaza renovation project on Nanjing East Road achieve the delivery standard of “sample equals finished product”. For more industry information: +WeChat qlfsbl123

Product consistency is a reflection of the comprehensive strength of a GRC manufacturer and requires the coordinated support of technical standards, production capability, and quality control system. As a national high-tech enterprise and a participant in the formulation of GRC industry standards, Qinglong has always maintained an attitude of “meticulousness and constant pursuit of excellence”, providing customers with full-chain services from detailed design to after-sales maintenance. Choosing a GRC manufacturer with a complete quality control system not only ensures that project results are realized, but also provides long-term protection for building safety and durability.