Advantage:

1.prestressed vacuum grouting anchorage head protective sleevehave a good performance of resistance to cracking

2.prestressed vacuum grouting anchorage head protective sleeve have a good performance of corrosion resistance

3.tie rod is waterproofing system

4.prestressed vacuum grouting anchorage head protective sleeveblock water into the reserved channel corrosion and anchorage of cable

5.prestressed vacuum grouting anchorage head protective sleevegood performance of installation and replacemance

6.prestressed vacuum grouting anchorage head protective sleevesmall additional stress