Chinese Standard: GB/T 25666-2010

Parallel shank twist drills with carbide tips

全国刀具标准化技术委员会(SAC/TC 91)

本标准规定了焊硬质合金刀片的直柄麻花钻的型式和尺寸、技术要求、标志和包装的基本要求。
 本标准适用于直径d为5mm～20mm的硬质合金直柄麻花钻（以下简称“麻花钻”）。

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