... .Surface: helix, indented, plane Name Dia. Tensile Strength Standard Helix PC Steel wire 3.0mm - 9.0mm1470Mpa-1860MpaGB5223, AS1310, ASTM , ... in big medium and small szied of various shapes of pc structures, and weidely used for civil engineering constructuion of ... concrete floor, wall board, tubular piles, powers and unclear power station, etc...3. Enquiry please let us know the standard, tensile ...