... 10.7MM 12.6MM Prestressed concrete steel bar used for concrete pile Nominal diameter: 7.1mm,9.0mm,10.7mm,12.6mmNominal diameter ... in KS standard : 7.4mm, 9.2mm, 11mm, 13mmTensile ... -2005(China),Korea KS standard. ship by :20'GP container. pc steel bar used for prestressed concrete steel pile