Ningbo Yongxiang Copper Pipeline Co Ltd

Quality Control

QC/Technical Support Our QC department has 25 skilled engineers, 15 R&D workers and 31 technicians. Following ISO 9001:2000-certified guidelines, they inspect our products piece by piece. The QC department holds regular meetings to discuss the problems they meet and how to improve our quality. QC Staff 20 to 29 Triunity measure instrument Inspection of valves Procedures/testing Details Valve Testing: 1. Pneumatic tightness test by explosion: We fill the valve with air at six bar pressure and wait for 24 hours before opening the valve. If an explosion occurs, the valve is approved, otherwise it is rejected. 2. Pneumatic tightness test by immersion: We fill the valve with air at six bar pressure and put it in water. If there are no bubbles, then the valve is approved. Other Information Other Information: RCQ approves our machinery after checking that all instructions indicated in QC list have been followed by tool makers.