Chinese Standard: GB/T 4251-2008

Machine reamers with carbide tips

全国刀具标准化技术委员会(SAC/TC 91)

本标准规定了硬质合金直柄、莫氏锥柄机用铰刀的型式和尺寸、位置公差、材料和硬度、外观和表面粗糙度、标志和包装的基本要求。
本标准适用于直径大于5.3 mm至20 mm的硬质合金直柄机用铰刀和直径大于7.5 mm至40 mm的硬质合金锥柄机用铰刀。

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