DIN 20593-4
DIN 20593-4 Monorails for mining - Rails - Part 4: Curved rails and adapting rails for profiles I 140 V and I 250
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 04/01/2007
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 04/01/2007