DIN EN 1971-1-2012 铜和铜合金.在无缝圆铜和铜合金管上的测量缺陷的涡流试验.第1部分:在外表面使用包围试验线圈的试验.德文版本 EN 1971-1-2011
Copper and copper alloys - Eddy current test for measuring defects on seamless round copper and copper alloy tubes - Part 1: Test with an encircling test coil on the outer surface; German version EN 1971-1:2011