Helix PC Steel wire: 1.Size: 3.0-9.0mm 2.Standard:ASTM, GB, ... , indented, plane Name Dia. Tensile Strength Standard Helix PC Steel wire 3.0mm - 9.0mm1470Mpa-1860MpaGB5223, AS1310, ASTM , BS 1. Type ... please let us know the standard, tensile strength, quantity and packing requirement. Helix PC steel wire