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Standard
T/ZZB 1961-2020 Hammer drill bit (English Version) |
Detail of T/ZZB 1961-2020
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Introduction of T/ZZB 1961-2020
本标准规定了电锤钻头的术语和定义、型式和尺寸、基本要求、技术要求、试验方法、检验规则、标志、包装、运输、贮存、质量承诺。
本标准适用于在无金属夹杂物的混凝土、砖等材料上钻孔用的直径为5 mm 至52 mm 的电锤钻头。
Contents of T/ZZB 1961-2020