Q355B spiral welded pipe is mainly used for water supply, heating, steel structures, pile foundations, bridge building pillars, and other purposes. The welds of Q355B spiral welded pipe have all undergone online continuous ultrasonic automatic damage detection, ensuring the non-destructive testing coverage of spiral welds. If there is a defect, it will automatically sound an alarm and be marked with spray paint. The spiral seam welded steel pipe production workers can adjust the process parameters at any time according to this, and eliminate the defect in a timely manner.