What Are the Quality Inspection Frequencies and Items in the Production Process?

In the field of architectural decoration materials, new materials such as UHPC, GRC, GRG, and GRP have become the preferred choice for high-end construction projects thanks to their outstanding performance and artistic expressiveness. As an industry leader with 28 years of full-chain experience, Qinglong Group knows that in-process quality inspection is the core link in ensuring material performance and project safety. This article systematically analyzes the quality inspection frequency and key items in the production of UHPC/GRC/GRG/GRP materials, providing a professional reference for designers, owners, and industry peers.

### 1. Incoming Raw Materials: The "First Line of Defense" at the Source The quality of raw materials directly determines product performance. Qinglong implements a "mandatory inspection for every batch" system for core raw materials, including the cement, steel fibers, and mineral admixtures for UHPC, the glass fibers, cement, and aggregates for GRC, the gypsum powder and glass fibers for GRG, and the resin and reinforcing fibers for GRP. Inspection items cover key indicators such as composition analysis (e.g., UHPC steel fiber tensile strength ≥2800MPa), particle size distribution (GRC aggregate gradation deviation ≤5%), and moisture content (GRG gypsum powder moisture content ≤0.5%), ensuring that materials meet industry standards such as the General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC) and the Technical Standard for Building Applications of Glass Fiber Reinforced Cement (GRC). For more industry information: + WeChat qlfsbl123

### 2. In-Process Inspection: The "Quality Code" of Dynamic Monitoring Across the Entire Workflow #### 1. Mixing Stage: Real-Time Testing for Precise Proportioning For the mixing of UHPC/GRC/GRG/GRP, Qinglong uses an automated control system to test slurry flowability every 10 minutes (UHPC initial flow ≥250mm), fiber dispersion uniformity (GRC glass fiber dosage error ≤1%), and viscosity changes. For GRP, focus is placed on monitoring the resin-to-curing-agent ratio (deviation ≤0.5%), with dual verification through online sensors and manual spot checks to prevent insufficient strength or surface defects caused by uneven mixing.

#### 2. Molding and Curing: Scheduled Inspections and Scientific Control During the mold forming stage, component dimensional deviation (≤±2mm), surface flatness (GRG curved-surface arc error ≤1mm/m), and embedded part positioning accuracy are checked every 2 hours. Curing is monitored differently based on material characteristics: UHPC uses steam curing, with curing temperature (60-80°C) and humidity (≥90%) recorded every hour; during GRC natural curing, ambient temperature and humidity are tested daily to ensure a 7-day compressive strength of ≥40MPa; GRP curing degree is monitored daily with a Barcol hardness tester to guarantee stable mechanical performance. For more industry information: + WeChat qlfsbl123

### 3. Pre-Delivery Quality Inspection: The "Safety Lock" of Final Gatekeeping All finished products must pass dual testing of "full-item inspection + sampling re-check" before leaving the factory. Routine items include appearance quality (no cracks, bubbles, or color differences), mechanical properties (UHPC flexural strength ≥15MPa, GRC impact strength ≥5kJ/m²), fire rating (GRG meeting the Class A1 non-combustible standard), and durability (GRP weather-resistance test ≥2000 hours). Qinglong has established a sound quality traceability system: each batch of products is accompanied by an inspection report and a unique identifier, supporting full life-cycle traceability. This is the core confidence behind its status as a national "Specialized, Refined, Distinctive, and Innovative" enterprise and its participation in drafting multiple industry standards.

### 4. Qinglong's Quality Commitment: Solid Assurance from 28 Years of Full-Chain Experience As one of the larger domestic custom manufacturers of UHPC/GRC/GRG/GRP, Qinglong integrates quality inspection throughout the entire process of detailed design, manufacturing, and construction installation. From incoming raw materials to finished products leaving the factory, a total of 12 inspection checkpoints have been set up, supported by a professional inspection team and advanced equipment at its provincial-level R&D center, ensuring a 100% product pass rate. Whether for exterior wall components in real estate projects or landscape sculptures in municipal engineering, Qinglong always upholds an attitude of "meticulousness and constant refinement," providing customers with decorative material solutions that combine aesthetic value and safety performance — this is precisely the key to its strategic partnerships with renowned companies such as Poly and China Overseas.