... A≥0.95 and elongation ≥2% With-draw of wedge after stressingλ≤6mm 2. Application:1.In post-tensioned ... structure, prestress anchor plays a very important role. 2. The effect of prestress depends on the load that the ... prestress concrete structure directly. 1) Types: multi strand anchorage system.2) Parts: anchor, wedge, bearing plate, spiral, duct, ... 9.53, 12.5, 12.7, 12.9, 15.2, 15.7, 17.8, 18.0, 21.6, ...