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实现机械工业产品“上质量、上品种、上水平,提高经济效益”的关键是打基础,就是认真搞好标准化工作。贯彻六项互换性基础标准又是标准化工作的基础。因此,认真贯彻六项互换性基础标准对于提高建筑机械产品质量,开拓国内外市场,增加企业经济效益,促进企业技术进步具有重要意义。所谓六项互换性基础标准是机械工业产品中应用最广泛的最重要的《公差与配合》、《形状和位置公差》、《表面粗糙度》、《普通螺纹》、《键
The key to achieving the “quality, quality, quality, and economic efficiency” of mechanical industrial products is to lay the foundation for serious efforts in standardization. Implementing the six interchangeable basic standards is the basis for standardization work. Therefore, it is of great significance to conscientiously implement the six basic standards of interchangeability to improve the quality of construction machinery products, open up domestic and foreign markets, increase the economic benefits of enterprises, and promote the technological progress of enterprises. The six interchangeable basic standards are the most widely used and most important “tolerances and fits,” “shape and position tolerances,” “surface roughness,” “general threads,” and “keys.”