... strength1860 MpaYield strength1675MPaHardness20-35HRCStatic load test passed anchoring efficiencyηA≥0.95 and elongation ≥2% With-draw of ... . The prestress anchor is the important part of a firm system of construction, and its capability influences the security ... the prestress concrete structure directly. 1) Types: multi strand anchorage system.2) Parts: anchor, wedge, bearing plate, spiral, duct, ...