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See Chinese contents: JB/T 2985-2016 JB/T 2985-2016: Bi-metal collar for construction machinery
This standard specifies the classification, naming, requirements, test methods, inspection rules, markings, packaging, transportation and storage of bi-metal collar for crawler construction machinery. This standard applies to the bi-metal collar (hereinafter referred to as collar) of the supporting wheels, guide wheels and other transmission parts of the walking mechanism of crawler construction machinery.
