本标准规定了无缝和焊接钢管缺陷的自动涡流检测要求，埋弧焊钢管（以下简称钢管）除外。测试采用同心线圈技术或探头线圈技术。同心线圈技术通常适用于外径为250 mm或以下的管道。

This Standard specifies the requirements for automated eddy current examination of flaws on seamless and welded steel pipes and tubes, with the exception of submerged arc-welded steel tubes (hereafter referred to as tubes). The test employs the concentric coil technique or the probe coil technique. The concentric coil technique is generally applicable to the tubes with an outside diameter of 250 mm or under.