This standard specifies the classification, assessment principles and quality testing methods of freight trailer product quality grades. This standard applies to automobile freight trailers, semi-trailers, and container semi-trailers used on highways and urban roads.
JT/T 316-1997 history
2022JT/T 316-2022 Freight trailer product quality inspection and assessment methods
2010JT/T 316-2010 Products quality inspection and evaluation method of freight trailer
1997JT/T 316-1997 Grading for freight trailers product quality