AQSIQ announces the latest supervision and random inspection results of grinding products

In the second quarter of 2013, the State Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) conducted a national supervision and spot check on the quality of grinding machines. The inspection targeted 30 batches of products manufactured by 30 companies across eight provinces and municipalities, including Beijing, Tianjin, Jilin, Shanghai, Jiangsu, Zhejiang, Hubei, and Shaanxi. The testing was carried out in accordance with several key national standards, such as GB 15760-2004 for safety protection of metal cutting machine tools, GB 5226.1-2008 for electrical safety of mechanical equipment, GB 24384-2009 for cylindrical grinders, GB 24385-2009 for horizontal axis surface grinders, and JB 4029-2000 for safety requirements of grinding wheel covers. A total of 25 critical technical items were evaluated, covering aspects like entanglement hazards, extrusion and shearing risks, limit devices, anti-loose mechanisms, interlocking systems, clamping devices, protective cover thickness, opening angles, starting and stopping functions, emergency stop mechanisms, splash protection, power switches, protection coupling circuits, insulation resistance, pressure tests, overcurrent protection, motor overheating safeguards, electric shock prevention, hydraulic system performance, temperature rise, leakage, accuracy, noise levels, and motion testing. The results revealed that four batches of grinding machines failed to meet the required safety and quality standards. Specifically, these products had issues related to the power switch, electric shock protection, emergency stop functionality, and the strength of the protection coupling circuit. In response, the AQSIQ instructed the relevant provincial and municipal quality and technical supervision departments to take immediate corrective actions against the non-compliant products and their manufacturers, in line with existing regulations. This move underscores the government's ongoing commitment to ensuring product safety and quality in the manufacturing sector. The list of affected products and the corresponding enterprises involved in this spot check has been made public as part of the transparency measures taken by the administration. This initiative aims to raise awareness among consumers and industry players about the importance of adhering to national safety standards.

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