ISO 5003:1980, Flat bottom railway rails and special rail sections for switches and crossings of non-treated steel -- Technical delivery requirements

Applies to rails with a linear mass of 35 kg/m or more and to special sections used in association with these flat bottom rails. Does not apply, in particular, to grooved rails and check rails. An invitation to tender should normally be accompanied by a definition of the conditions of use and other documents for carrying out the order.