wedges and anchor for prestressed concrete Parts: anchor, wedge, block, spiral, duct payment : L/C , T/T modle: ... machine etc. Components: anchor head/plate/ring, 2/3pcs grips/wedges, block/backing/base/bearing plate, spirals, steel/plastic duct/pipe/tube ... /couple, coupler/connector/joint etc. Material: alloy steel, casting iron, plastic, steel etc. Usage: 1*7 PC strands 15.2/15 ...