Copper tubes, as a common component in industrial production, can be evaluated for quality using three methods.
1. Visual Inspection
The quality of copper tubes can be assessed through visual inspection. First, examine the color of the copper tube, which is generally categorized into purple copper and yellow copper. Under normal circumstances, the color of copper tubing should be uniform. For example, red copper tubing with a reddish hue is generally considered good quality. If there are color impurities or even visible impurities, it can be determined that the copper contains impurities and is of poor quality.
2. Testing
High-quality copper tubing is made of pure copper. Copper has the characteristic of good ductility. High-quality copper tubing will have a dark line, which does not indicate a quality defect but rather indicates excellent ductility.
When selecting copper tubing, you can also scratch the surface. If the inner and outer walls are the same, it indicates that the overall quality of the copper tubing is good. If the inner and outer walls are noticeably different, be cautious, as the copper may contain iron.
Three: Tensile Testing
After passing the appearance and simple tests, the final inspection process is tensile testing. Processed copper tubes are primarily categorized into three states: hard, semi-hard, and soft. Different states exhibit varying degrees of flexibility. Simply apply slight force to stretch the copper. High-quality copper tubes are slightly easier to deform, whereas poor-quality ones are very hard or resistant to deformation.
The company has a cluster of leading copper processing production lines in China, including:
German imported precision copper tube production line (annual output of 30,000 tons)
Japanese technology copper foil rolling line (thinnest up to 6μm)
Fully automatic copper bar continuous extrusion line
Intelligent copper sheet and strip finishing mill unit
Digitalized control and management of the whole production process is realized through MES system, and the dimensional accuracy of the products can reach ±0.01mm.
