DANSK DS/EN 1971-1:2019
铜和铜合金 测量无缝圆形铜和铜合金管缺陷的涡流试验 第1部分:在外表面使用环形测试线圈进行试验
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