scope:

This part of ISO 10893 specifies requirements for magnetic particle inspection of seamless and welded ferromagnetic steel tubes for the detection of surface imperfections on the tube body and the end/bevel face at the ends. For the tube body, this document specifies requirements for the detection of surface imperfections on all or part of the outside surface of tubes. However, by agreement between the purchaser and manufacturer, it may be applied to the inside surface over a limited length from the ends of tubes, dependent on the tube diameter. In addition, this document may be used, as appropriate, to locate the position of external surface imperfections detected by another nondestructive testing method (e.g. ultrasonic) prior to dressing of the tube surface, and to ensure complete removal of the imperfection after dressing is complete. For the end/bevel face at the ends of plain-end and beveled-end tubes, this document specifies requirements for the detection of laminar imperfections which may interfere with subsequent fabrication and inspection operations (e.g. welding, ultrasonic inspection of the butt welds, etc.). This document may also be used for the detection of imperfections, other than laminar imperfections, on the end/bevel face. In this case, magnetization shall be applied in the direction essentially perpendicular to the orientation of the particular imperfections to be detected.