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See Chinese contents: GB/T 34640.1-2017 GB/T 34640.1-2017: Classification and recycling and utilization of wrought aluminium and aluminium alloy scraps -- Part 1: Classification of scraps
This Part of GB/T 34640 specifies the grading and grouping requirements in the classification of scraps for wrought aluminium and aluminium alloy enterprises. This Part applies to the classification of scraps of wrought aluminium and aluminium alloy enterprises.
