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Chinese Standard: GB/T 31925-2015

Ultrasonic test methods of heavy wall thickness seamless steel pipes and tubes

全国钢标准化技术委员会(SAC/TC 183)

本标准规定了壁厚外径比大于0.2而小于0.3的无缝钢管压电超声波检验原理、检验方法、对比试样、探伤设备、检验条件、检验步骤、结果评定、检验报告。

本标准适用于各种用途、外径不小于6 mm的厚壁无缝钢管纵向、横向缺陷的超声波检验。本标准所述探伤方法主要用于对钢管内金属不连续性缺陷的检测,不适用于层状缺陷的检测。

壁厚外径比大于等于0.3的钢管的检验,按供需双方协商的方法进行。

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