Steel for the reinforcement of concrete. Weldable ribbed reinforcing steel B500. Technical delivery conditions for bars, coils & welded fabric Reinforcing steels, Structural steels, Steels, Weldability, Chemical composition, Grades (quality), Bars (materials), Coils, Sheet materials, Cloth, Designations, Diameter, Mechanical properties of materials, Yield strength, Bend testing, Mass, Marking, Quality control