This European Prestandard specifies requirements for the chemical composition and the mechanical and geometrical properties of weldable ribbed reinforcing steel in grade B500, categories A and B (designated as steels B500A and B500B, see table 1) used for the reinforcement of concrete structures in the form of - bars and coils or as elements for the manufacturing of welded fabric, - sheets of factory made machine welded fabric in the diameter ranges given in table 1.
