Chinese Standard: GB/T 6135.4-2008

Parallel shank twist drills—Part 4:The types and dimensions for extra long parallel shank twist drills

MOD  ISO 3292:1995

全国刀具标准化技术委员会(SAC/TC 91)

GB／T　6135的本部分规定了直柄超长麻花钻的型式和尺寸。
本部分适用于直径2.0　mm～14.0　mm的直柄超长麻花钻。

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