pc steel bar

pc steel bar 1.The use of PC steel Bar The PC steel bar is mainly used for building industry, it is the main steel material in pipe pile foundation, has high strength, low usage of metallic material, convenience usage and the quality was easily promised. It has a extensive usage building industry. 2. The original material of PC BAR Chemical composition of 30MnSiCSiMnPSCu0.28-0.340.70-2.30.50-1.900-0.030-0.0350.030 3. Manufacturing process flow material-descaling-keepstraight-drawing-knurling-heat-quenching-heat-tempering-test-packing 4. Grad and technological properties Nominal diameter: 7.1mm,9.0mm,10.7mm,12.6mm Tensile strength ≥ 1460Mpa Yield strength ≥ 1275Mpa Elongation ≥ 5% Low relaxation ≤ 1.5% Straightness ≤ 2mm/m Net weight per coil: 1000Kg(1100Kg).