1) With the classic method called "circometer", the measure will be identical, for the perimeter of each is the same despite an ovalization of over 4 mm

 
Two pipe ends with identical perimeters

 2) Take now two identical ends but oriented at a 90° angle.

3) Now setting for welding two pipes

By means of a caliper, it would be very difficult to determine the graph, and would be very time-consuming and tedious.

This explains why controls are limited to a few per-centage points of the total number of pipes concerned.

With CALIPIPER you can control up to 120 extremities per hour. Within a few days all the first sorting-out can begin.

First step (Extremes determination)

• The pipes must be sorted when delivered at the factory.
• Our experience shows that a few non-conforming extremities are responsable for a great many hours of repairs.