1. Specification table of welded steel pipes:
2. According to national regulations, the principle for selecting protective pipes for cable protection is: the inner diameter of the pipe should not be less than 1.5 times the outer diameter of the cable being worn. , when there are more than 2 bends, appropriate consideration should be given to increasing them. The outer diameter of WDZ-YJFE 4x25 1x16 cable is 26.2mm, and the pipe diameter is 40% larger than the wire diameter, which is the allowed value of the specification