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See Chinese contents: GB/T 37057-2019 GB/T 37057-2019: Multi-way precision die forgings -- Quality control criterion
This Standard specifies the main control points and requirements for the production process of multi-way precision die forgings, including process design, raw materials, blanking, molds, forging equipment, forging, safety and environmental protection. This Standard applies to the quality control of multi-way precision die forgings.
