The result shows that there is high rate of recognition about the little defect on the thin steel pipe by alternative current magneticleakageflux method.
结果表明，该交变漏磁法对钢管表面较小裂纹具有较高的检出率。
2
Based on the magneticleakageflux technique, the principle of localized defect inspection and wall thickness measurement in oil well tubing has been researched.
文中研究了油管局部缺陷和壁厚减薄缺陷的漏磁场检测原理。
3
For the magneticleakageflux system for steel tube flaw online inspection, normally multi-sensor technique is used to ensure the detecting speed and sensibility.