... prestressed concrete Parts: anchor, wedge, block, spiral, duct payment : L/C , T/T modle:different Description: post-tensioned prestressed anchorage system ... pump power pack, swaging 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 ...