NF A03-715:1969 IRON AND STEEL. ISOTHERMAL RELAXATION TEST FOR STRANDED OR TWISTED WIRE ROPE USED AS REINFORCEMENT IN PRE- AND POST-STRESSED STRUCTURES.
2010NF A03-720-3:2010 Steel for the reinforcement and the prestressing of concrete - Test methods - Part 3 : prestressing steel.
0000 NF A03-720-3:2002
1969NF A03-715:1969 IRON AND STEEL. ISOTHERMAL RELAXATION TEST FOR STRANDED OR TWISTED WIRE ROPE USED AS REINFORCEMENT IN PRE- AND POST-STRESSED STRUCTURES.