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See Chinese contents: GB/T 35840.3-2018 GB/T 35840.3-2018: Steels for plastic mould -- Part 3: Corrosion resistant steels
This Part of GB/T 35840 specifies the content of ordering, dimension, appearance, weight, technical requirements, test methods, inspection rules, packaging, marking and certification of corrosion resistant steels for plastic mould. This Part is applicable to corrosion resistant round steel, square steel and flat steel (hereinafter referred to as steels) that are used for the manufacture of plastic moulds through hot rolling, forging and machining delivery.
