... anchoring efficiencyηA≥0.95 and elongation ≥2% With-draw of wedge after stressingλ≤6mm 2. Application:1.In post-tensioned and ... concrete structure directly. 1) Types: multi strand anchorage system.2) Parts: anchor, wedge, bearing plate, spiral, duct, coupler etc.3) Material: ... 3, 9.53, 12.5, 12.7, 12.9, 15.2, 15.7, 17.8, 18.0, 21.6, 21. ... PC strands 1x3 - 6.5, 8.6, 10.8mm; PC Wire 4.0, 5.0, 6.0, 7.0mm.