To judge the quality of purple copper square tube, you can start from the following aspects:
1. Appearance: check whether the surface of the square tube is smooth, with or without cracks, knots, scratches and other defects.
2. Dimensional accuracy: measure whether the size of the square tube meets the standard requirements and whether the tolerance is within the allowable range.
3. Material purity: confirm whether the purity of copper violet is up to standard through chemical analysis or testing means.
4. Mechanical properties: test the strength, hardness and other mechanical properties of the square tube to see if they meet the requirements. 5.
5. corrosion resistance: to understand its corrosion resistance in different environments.
