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See Chinese contents: GB/T 38820-2020 GB/T 38820-2020: Irradiation-resistant and heat-resistant steels
This standard specifies the terms and definitions, order content, dimensions, shape, weight, technical requirements, test methods, inspection rules, packaging, markings and quality certificates of radiation-resistant heat-resistant steel. This standard applies to hot-rolled and forged bars which has a diameter of not more than 150 mm for the nuclear industry.
