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Chinese Standard: GB/T 20333-2006

Taps for parallel and taper pipe threads—General dimensions and marking

IDT  ISO 2284:1987

全国刀具标准化技术委员会

本标准规定用于管螺纹丝锥的通用尺寸和标志。本标准可适用于以下两种类型的丝锥:
——圆柱管螺纹丝锥(见表1);
——圆锥管螺纹丝锥(见表2)。
上述所称螺纹按ISO 228-1和ISO 7-1。
此外,本标准的附录中给出了有关各部分尺寸的计算方法。

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