Screw steel wire 1.Size: 3.0-9.0mm 2. ... Wire 3.0mm - 9.0mm1470Mpa-1860MpaGB5223, AS1310, ASTM , BS Screw steel wire1. Type of Surface: Helix, Plane and indented2. Usage ... beams industrial and civil prefabricated concrete floor, wall board, tubular piles, powers and unclear power station, etc...3. Enquiry please ... know the standard, tensile strength, quantity and packing requirement. Screw steel wire