How to judge the quality of spiral steel pipes

1. First, conduct an appearance inspection to observe whether the surface of the spiral steel pipe is flat and smooth, and whether there are obvious cracks, bubbles, inclusions, scratches or other mechanical damage. These defects may affect the strength and corrosion resistance of the steel pipe.

2. Knock on the spiral steel pipe and listen to the sound after knocking. If the sound is crisp and the echo is not chaotic, it means that the spiral steel pipe is made of new material technology, rather than the comprehensive development and utilization of waste spiral steel pipes.

3. The shape detection of the butt weld of spiral steel pipes is a detection method with simple detection technology and universal application ability. It is an important part of the quality inspection of finished products. The key is to find out the defects and specification errors of the welded surface of the spiral steel pipe. Generally, human eyes are used for detection, relying on special tools such as specifications, instruments, and high-power magnifying glasses. If there are defects on the welded surface, there will be defects inside the weld.