... 2diameter:3.0mm-12.0mm 3tensile strength:1460-1860mpa Helical Rib(Spiral)PC Wire> Standard: GB/T5223-2002, ASTMA421, ASTMA648, BS5896 ... >Elongation : Lo=200mm, the elongation over 4.0%> Application: For high ways, Bridges, Airports, building construction, Water conservancy projects, Railway Sleepers ... .45 0.102.00-2.4040-50 low relaxtion helical rib pc steel wire high tensile