On August 28th, the State General Administration of Quality Supervision, Inspection and Quarantine announced the results of national supervision and inspection of bearing steel product quality, and no unqualified products were found.

A total of 56 kinds of bearing steel products produced by 28 companies in 8 provinces and municipalities in Hebei, Liaoning, Shanghai, Jiangsu, Zhejiang, Shandong, Hubei and Qinghai were spot-checked. According to the requirements of "High Carbon Chromium Bearing Steel" GB/T 18254-2002, carbon, chromium, copper, manganese, molybdenum, nickel, nickel + copper, oxygen, phosphorous, sulfur, silicon, low magnification, Forging test, non-metallic inclusions, carbide strips, carbide network, carbide liquefaction, annealing fracture, annealing hardness, decarburization layer, micro-porosity, microstructure and other 22 projects were tested.

After inspection, the quality of the 56 kinds of bearing steel products checked this time meets the requirements of the standard.

Bearing steel product quality national supervision spot check product and its company list