BBR launches the BBR VT CONA CME External Post-tensioning System (European Technical Approval – ETA 07/0168). The CONA CME tendons consist of 1 to 31 seven-wire prestressing strands with a nominal diameter / nominal cross section of 15.3 mm / 140mm2 or 15.7 mm / 150mm2 and a maximum characteristic tensile strength of 1860 MPa. The tendon sheaths are smooth plastic or steel ducts, which are injected with a high performance grout or a flexible filling material.