Chinese Standard: GB/T 31438-2015

Steel thin-walled sonic-testing tubes for concrete bored piles

中华人民共和国交通运输部

本标准规定了混凝土灌注桩用钢薄壁声测管的产品型号、尺寸和质量、技术要求、试验方法、检验规则、包装、标志、运输与贮存。
本标准适用于混凝土灌注桩采用超声波法检测用的声测管。

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