ICS43.040CCST33此版仅供学习参阅QC/T270—2023代替QC/T270—1999汽车用立式锻压钢质模锻件未注公差尺寸的极限偏差Permissiblevariationsindimensionswithouttoleranceindicationforsteeldieforgingsofautomobilemadebyverticalpressforgingprocess2023-04-21发布2023-11-01实施QC/T270—2023目次前言..................................................................................Ⅲ1范围................................................................................12规范性引用文件.....................................................................13术语和定义..........................................................................14锻件公差主要因素的确定.......................
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