OB37 wire rod coil

OB37 wire rod coil, known as OB37 reinforcing steel in coil, is a steel product with a smooth profile. It is generally manufactured and sold in the form of coils, but also in bars of different sizes (diameters / lengths). OB37 reinforcing coil is a metallurgical product obtained through the technological process of hot rolling. It has a low carbon content, low strength, high ductility and medium adhesion with concrete. It is an efficient, malleable material, less rigid than the concrete steel benchmark with a periodic profile. This product has a relatively low price, but a very good efficiency. It is especially used to make stirrups for rebars, columns, beams, belts and other component elements of reinforced concrete structures.

Technical details of OB37 steel coil / wire rod with smooth profile, according to STAS 438-1 / 2012 standards:

• symbolisation: O – steel (ro - otel); B – concrete (ro - beton); number 37 - breaking strength of steel;
• steel material chemical composition: C - 0.230; Mn - 0.750; P - 0.045; S - 0.045; And - 0.400; Ni - 0.300; Cr - 0.300; Cu - 0.500;
• mechanical properties: yield strength Rp0.2 - ≥ 235 MPa; tensile load Rm - ≥ 360 MPa; elongation (A) - ≥ 25 %.

The quality of the reinforcement, the quality of the reinforcing wire rod material and the percentage of longitudinal and transverse reinforcement of the sections determine the mechanical resistance and stability of the constructions.