Generally speaking, there are two ways to calculate straightness or curvature:
1、 Local curvature of seamless steel pipe or straight seam steel pipe: measure the chord height (mm) at the maximum bending of the steel pipe with a ruler with a length of one meter, which is the value of local curvature, and its unit is mm / m. The expression method is as follows: 2.5mm/m. This method is also applicable to the bending of the pipe end.
2、 Total bending degree of the whole length of the steel pipe: use a thin rope to tension from both ends of the pipe, measure the maximum chord height (mm) at the bending of the steel pipe, and then convert it into the percentage of the length (in meters), that is, the total bending degree of the steel pipe in the length direction.
Post time: Feb-11-2022