Zhejiang Yugong Fluid Technology Co., Ltd quality control

  Our company has established a comprehensive standardized quality management system and strictly adheres to the ISO 9001 international quality management system standards throughout the entire production process. Our products have obtained multiple authoritative industry certifications, comply with national and industry valve technical standards, and are backed by a comprehensive qualification and testing system. We implement end-to-end quality control, from incoming raw material inspection, precision machining, and assembly and commissioning, to final product testing for hydrostatic pressure, air tightness, torque, and non-destructive material testing. Every butterfly valve undergoes rigorous pressure testing, and we provide complete factory test reports and material certificates. At the same time, we continuously benchmark against high-end valve quality requirements both domestically and internationally, constantly optimizing our quality control processes to ensure product sealing performance, durability, and stability. Our products are suitable for complex operating conditions in municipal water supply, petrochemicals, power generation and metallurgy, and wastewater treatment, providing customers with safe, reliable, and quality-controlled butterfly valve products.