1*7 PC strand 1.Standard:GB/T5224-2003 2.Nor.Dia:9.0-17.8mm 3.Tolerance:+0.20/-0.20mm 1*7 PC strand 1.Standard:GB/T5224-20032.Nor.Dia:9.0;12.0;12.7;15.0;15.2;15.24;15.70;17.80mm3.Tolerance:+/-0.25mm4.Area of section:54.8,74.2,98.7,140,223mm5.Theoretical weight:430,582,775,1100,1750kg/1000m6.Tensile strength:1720,1860,1960Mpa7.Yield strength:1550,1670,1760Mpa