... , 12.6mmStandard: YB/T111, GB/T5223.3, JISG3137 etc.Tensile Strength ≥ 1420MPa; Yield strength ≥ 1280MPaElongation ≥ 5.0%, Straightness ≤ 2.0mm/mNormal Relaxation ≤4 ... , comprehensive mechanical properties.Usage: PC bars mainly used in high strength prestressed concrete pipe pile, electric pole, railway sleeper, viaduct pier ...