The article
National Road Stud Detection Fraud once caused widespread concern. On April 23, 2008, the general office of the Ministry of transport issued The Notice on the Results of Quality Supervision and Random Inspection of Traffic Products in 2007, which described the quality of plastic cat eye road studs last year.
A total of 8 Enterprises' contour mark and
protruding cat eye road stud products, and 114 samples were selected. The sampling qualified rate was 24.6%. The sampling qualified rate of contour marks is 0%. The qualified rate of the raised cat eye road studs is 66.7%.
The main quality problems are that the compression resistance, impact resistance, luminous intensity coefficient, product identification and other indicators do not meet the standard requirements. 24.6% of the total pass rate, 0% of the contour mark pass rate and 66.7% of the protruding cat eye road stud pass rate. These data do reflect the serious quality problems of plastic road nails in China.
In the United States, the applicable standard for cat eye road stud is ASTM4280. China have made reference to ASTM4280 to a great extent when formulating the standard. And in some provisions, Chinese standard even exceeds the American standard. For example, due to the serious overloading of Chinese vehicles, the requirements for the compression resistance of cat eye road studs have exceeded the American standards. Moreover, the revision of domestic cat eye road stud standards keeps pace with the times and basically achieves the practical and realistic requirements.
Since the standard of
cat eye road studs is qualified, the problem of low passing rate of cat eye road studs should be caused by detection. There are three ways to detect the quality of cat eye road studs in China. First, the testing department only detect and is responsible for the samples. Second, the testing department only inspect the quality of a batch of goods. Third, the testing department inspects the factory to find out whether there are qualified machines and system, then issue a batch production license.
