| Class QZ-4 (QZJ-4) wagons entered service as Class GZ-10 livestock wagons between 1971 and 1974. They were converted to Class QZ-4 between 1984 and 1986 and are designed to transport explosives.Number range 19 013 302 to 19 015 496, Length between couplers 13.168m, Length over headstocks 12.190m, Length between bogie pivot centres 9.294m, Height 3.556m, Width 2.519m, Door width 1.219m, Door height 1.830m, Tare (average) 21,300kg, Load 30,000kg, Floor area 26.62m2, Capacity 45.2m3. |