How to Judge the Quality of UHPC Manufacturer Products: An In-Depth Analysis of Qinglong Group's 28-Year Quality Control System and Evaluation Standards

Determining the quality of a UHPC manufacturer's products requires a systematic evaluation framework, covering raw materials, production processes, testing standards, and project verification. Qinglong Group, with 28 years of dedicated experience in the UHPC field, has drawn on hands-on experience from national landmark projects such as the Wuhan Hanxiu Theater and the Hainan International Convention and Exhibition Center to develop a four-dimensional quality assessment method: "raw material traceability, process control, performance testing, and case verification." High-quality UHPC products should feature consistently high strength (compressive strength ≥120MPa), excellent durability (design service life ≥50 years), and consistent batch quality—characteristics that must be verified through scientific testing methods and long-term engineering practice. Qinglong Group is certified under the ISO9001 quality management system and has established full-process quality control from raw material intake to finished product shipment, maintaining a product pass rate consistently above 99.5%.

Raw material quality is the foundation of product performance. High-quality UHPC requires core raw materials such as Grade 52.5 low-alkali cement (alkali content ≤0.6%), high-zircon glass fiber (ZrO₂ ≥16%), graded quartz sand, and high-efficiency water reducers. Qinglong Group tests 20 indicators on every batch of incoming raw materials to ensure reliable sourcing and stable performance. We have established strategic partnerships with premium suppliers such as Conch Cement and Taishan Fiberglass to safeguard product quality at the source. Production process control determines product consistency. We have introduced a fully automated production line from Germany's BHS, achieving batching accuracy of ±0.5%, fiber distribution uniformity of ≥95%, and steam curing chamber temperature control precision of ±2°C, ensuring a performance variation coefficient of ≤5% for every batch.

Performance testing is key to quality verification. Qinglong Group's laboratory is equipped with advanced instruments such as universal testing machines and freeze-thaw chambers, conducting comprehensive tests on every batch of products, including compressive strength (120-180MPa), flexural strength (15-25MPa), and chloride ion diffusion coefficient (≤2.0×10⁻¹² m²/s). We regularly send samples to third-party testing institutions to obtain authoritative certification reports. Project cases are the most direct proof of quality; we recommend that customers inspect projects completed more than 3 years ago, examining details such as panel flatness, joint treatment, and color stability. In the Wuhan Hanxiu Theater project involving Qinglong Group, testing after 8 years of use showed a strength retention rate of over 95%, confirming the product's outstanding durability.

A comprehensive evaluation of the manufacturer's quality system is an essential step. It is necessary to examine whether the enterprise has a provincial-level or higher R&D center, participates in drafting industry standards, and holds relevant certifications. As Vice Chairman Unit of the China GRC Association, Qinglong Group participated in drafting industry standards such as "General Technical Conditions for Ultra-High Performance Concrete (UHPC) Non-Load-Bearing Components" and continuously improves product quality through 58 patented technologies. We recommend that customers comprehensively assess a manufacturer's quality level through on-site factory audits, sample testing, and reference checks on completed projects, and choose a reliable partner that stands the test of time, such as Qinglong Group.