pc steel bar size:7.1mm,9.0mm,10.7mm,12.6mm JISG3137-1994,KSD 3505,GB/T 5223.3-2005 ... concrete pile --------------------------------------------------------------------------Nominal diameter: 7.1mm,9.0mm,10.7mm,12.6mmNominal diameter in KS standard : 7.4mm, 9.2mm, 11mm, 13mm SizeSurfaceTensile strengthStipulated ...