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根据部有关文件指示精神,1981年年中,我所与上海市机械配件技术研究所共同对轴承行业的信得过产品、出口和民用轴承采取下厂集中抽样定点检测的办法进行了质量抽查。 对42个轴承厂共抽337个品种,每个品种抽20套,共抽6740套;对3个钢球厂,共抽13种规格、每种抽50粒(其中一种不足50粒,有3种超过50粒),共抽628粒。检测方法按GB307—77、GB308—77和GB309—77以及有关补充技术条件的规定进行。
According to the directives of the Ministry of Foreign Affairs, in the middle of 1981, the Institute and the Shanghai Mechanical Parts Technology Research Institute jointly conducted quality inspections on reliable products, exports, and civilian bearings in the bearing industry by means of centralized sampling and fixed-point inspection. A total of 337 varieties of 42 bearing factories were pumped, 20 sets of each set were pumped, and a total of 6740 sets were pumped; for 3 steel ball plants, a total of 13 kinds of specifications were pumped, each pumped 50 tablets (one of which was less than 50 tablets, with Three kinds of more than 50), a total of 628 tablets. The test method is carried out according to the provisions of GB307-77, GB308-77 and GB309-77 and relevant supplementary technical conditions.