wedges and anchor for prestressed concrete Parts: anchor, wedge, block, spiral, duct payment ... Description: post-tensioned prestressed anchorage system; stressing / tensioning accessories for single / multi PC strandsProducts: round anchor, flat/slab anchor, ... backing/base/bearing plate, spirals, steel/plastic duct/pipe/tube/couple, coupler/connector/joint etc. Material: alloy steel, casting iron, ...