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See Chinese contents: GB/T 38885-2020 GB/T 38885-2020: General specification for ultra-high cleanliness of high carbon chromium bearing steel
This standard specifies the order content, size, shape, weight, technical requirements, test methods, inspection rules, packaging, markings and quality certificates of ultra-high cleanliness of high-carbon chromium bearing steel. This standard is applicable to the hot-rolled or forged round steel, wire rod, cold-drawn round steel and steel wire which has a diameter of not more than 150 mm for the production of bearing rings and rolling elements with long contact fatigue life performance of automobiles, railways, energy sources, CNC machine tools.
