带硬质金属尖的旋转和旋转冲击水泥钻. 尺寸

[中文适用范围]： 旋转冲击麻花钻头的尺寸要求，具体涉及硬质合金顶锪孔钻头的直径（4 mm至25 mm）和工作长度系列（短、长、超长）。本标准不适用于锤式钻头。 [外文原描述]： ISO 5468:2017 specifies the dimensions, in millimetres, of rotary and rotary impact masonry drill bits with hardmetal tips, having diameters in the range of 4 mm to 25 mm inclusive and overall, and working lengths in the series short, long and extra-long. It does not apply to hammer drills.