This standard specifies the strength requirements and test methods for the fifth wheel pin of the semi-trailer (hereinafter referred to as the fifth pin). This standard is applicable to the No. 50 and No. 90 traction pins of semi-trailer fifth wheel conforming to the provisions of GB4606 and GB4607.
GB/T 15088-1994 history
2009GB/T 15088-2009 Road vehicles.Fifth wheel kingpins.Strength test
1994GB/T 15088-1994 Motor vehicles-Fifth wheel coupling pins-Strength test