Helix PC Steel wire: 1.Size: 3.0-9.0mm 2.Standard:ASTM, ... : helix, indented, plane Name Dia. Tensile Strength Standard Helix PC Steel wire 3.0mm - 9.0mm1470Mpa-1860MpaGB5223, AS1310, ASTM , BS ... in big medium and small szied of various shapes of pc structures, and weidely used for civil engineering constructuion of ... the standard, tensile strength, quantity and packing requirement. Helix PC steel wire