General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 28689-2012
Scope
This standard specifies the technical requirements, test methods, inspection rules and signs, packaging and transportation of high-efficiency rotor sand mixers. This standard applies to high-efficiency rotor sand mixers (hereinafter referred to as sand mixers)
GB/T 28689-2012 Referenced Document
GB 20905 Safety requirements for foundry machinery
GB 5226.1 Safety of machinery--Electrical equipment of machines--Part 1: General requirements*, 2019-06-04 Update
GB/T 10095.1 Cylindrical gears—ISO system of flank tolerance classification—Part 1:Definitions and allowable values of deviations relevant to flanks of gear teeth*, 2022-10-12 Update