2015TB/T 1491-2015 Rolling stock hydraulic shock absorber
2004TB/T 1491-2004 Technical specification for oil damper of locomotive and rolling stock
1985TB/T 1671-1985 Basic dimensions and parameters of hydraulic shock absorbers for rolling stock
TB/T 1671-1985 Basic dimensions and parameters of hydraulic shock absorbers for rolling stock was changed to TB/T 1491-2004 Technical specification for oil damper of locomotive and rolling stock.