... universal open-top car is the symbolic product of wagon of 70 ton grade,the wagon's body is ... welded structure fully made of steel; consists of underframe,side frame,end walls,doors,etc, ... containers,etc.On both sides of wagon's body,there are 2 pairs of middle side doors and 12 bottom ... type 120 control valve,spinning sealed brake cylinder of 305X 254,ST2-250 slack adjuster,empty and ...