... Model: Single Anchor & Multi Anchor8. Parts: Anchor,Wedges,Bearing Plate,Spiral Bars,Ducts,Coupler9. Anchor: Round10. Anchor Ring: φ117* ... 4711. Wedges: 2 or 3 pieces12. Anchor Plate: 162*100*φ7813. Ducts: Plastic & Steel Strip14. Spiral Bars: ... .0mm spiral ribbed pc wire.6. Parts: anchor ring/plate, wedge, base plate, spiral bar, bellow/corrugated pipe etc.7. Function: Prestressing ...