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Chinese Standard: GB/T 1800.1-2020

Geometrical product specifications (GPS)—ISO code system for tolerances on linear sizes—Part 1:Basis of tolerances, deviations and fits

全国产品几何技术规范标准化技术委员会(SAC/TC 240)

GB/T 1800的本部分建立了线性尺寸公差的ISO代号体系,其适用以下类型的尺寸要素:
a) 圆柱面;
b) 两相对平行面。
本部分定义了线性尺寸公差ISO代号体系的基本概念和相关术语,提供了从多种可选项中选取常用公差带代号的标准化方法。
此外,本部分对不受方向和位置约束的两尺寸要素配合的基本术语进行了定义,并对“基准孔”和“基准轴”原理进行了解释。

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