QC/T 270-2023 Permissible variations in dimensions without tolerance indication for steel die forgings of automobile made by vertical press forging process (English Version)
2023QC/T 270-2023 Permissible variations in dimensions without tolerance indication for steel die forgings of automobile made by vertical press forging process
1999QC/T 270-1999 Limit Deviation of Dimensions Without Tolerance Note for Automobile Steel Die Forging Parts