Characteris of Prestressed Concrete Strand 1.high tensile strength and elongation;low relaxation value;small stress losing;excellent durable anti-fatigue performance. 2.Grade: 250K / 270K / 290K, Tensile Strength: 1770Mpa / 1860Mpa / 1960Mpa, the 1000h Relaxation is 2.0% max and the elongation is 4.0% min. 3.Categories: plain,galvanized,PE coated,epoxy resin coated, spiral ribs, indented.
