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See Chinese contents: GB/T 33522-2017 GB/T 33522-2017: Carburizing bearing steel forgings -- Technical specification
This Standard specifies the ordering requirements, manufacturing process, technical requirements, inspection rules and test methods, acceptance and quality certificate, mark and package of carburizing bearing steel forgings. This Standard is applicable to the ordering, manufacturing and inspection of high quality carburizing bearing steel forgings used for manufacturing rolling bearing rings and rolling elements.
