Standard Number: YB/T 4758-2019(YB/T4758-2019)
Chinese:高碳铬轴承钢球坯
English:High Carbon Chromium Bearing Steel Ball Billets
Effective Date:2020-01-01
Standard Applicability:This standard specifies the symbols and definitions, dimensions and allowable deviations, delivery status, technical requirements, test methods, inspection rules, packaging, marking and quality certification of high-carbon chromium bearing steel ball billets for rolling bearings. This standard applies to hot rolling, hot upsetting, hot molding and other processes produced by high carbon chromium bearing steel ball billets.
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