On permanent anchoring device for concrete. Anchorage can be divided into two categories: (a) the tension side anchor: end installed in prestressed tendons Zhang anchor portion and may also call Anchorage, the so-called anchor, is in post-tensioned structure or component In order to maintain tendon tension and passes it to pull the anchor mix; (b) a fixed end anchor: end installed in prestressed tendons Department usually buried in concrete in tension and not to the anchor. Tendons anchorage standards: People's Republic of China National Standard (GB / T 14370-2007). Applications Widely used in roads and bridges, railway bridges, urban interchange, urban light rail, high-rise building, water conservancy and hydropower dams, ports, rock slope protection anchor, foundation reinforcement, mine tunnel roof top anchors, prestressed truss, metro, major office buildings and hotels, storage plant, tower construction, heavy promotion, synovial intermittent forward, push the top bridge and tunnel, large containers and ships, sleepers, replacement of bridge bearings, bridge and building reinforcement, steel works, magnetic and corrosion Engineering (fiber anchor), carbon fiber reinforced, pre-tensioned beam field construction, externally prestressed engineering, cable-stayed, suspension and other projects engineering.