OVM Special Post-tensioning

Ring Anchoring System OVM.HM

Ring Anchoring System-HM15(Bonded )

1. HM. Anchor Head 2.Wedge 3. Spacer 4. Deviator A 5. Deviator B 6.Transfer Block

7. Stretch Tube 8.Stressing Jack  9. Strand 10.Tool Anchor Head 11.Tool Wedge

• Round PC storage tank，such as silo，liquid gas tank and sewage treatment tank
• PC containment of nuclear reactor
• PC Hydrodynamic tunnel and well
• Other similar round prestressed concrete structure

OVM.HM anchoring system is used to exert prestressing force to ring structure. Both stressing end and dead end of ring prestressing tendon are integrally combined at anchor head (serving as a coupler). A special deviating device is required for tensioning tendons.

Fully leak tightness ring anchoring system-HM15A(unbonded strand)

HM15A ring anchorage with super corrosion resistance that is specially developed for water conservancy and high corrosion engineering. The ring anchorage uses a double axial extrusion seal and radial seal structure to form an independent anti-corrosion structure on each strand of steel.

• There was no leakage in the ring anchorage after it was immersed in 3 m of hydrostatic water for 96 hours.
• The friction loss is smaller than that of bonded prestressing
• High construction efficiency，Shorten the construction period
• Dozens of anchoring system have been successfully applied

Post-tensioning system for Nuclear power plant

• It can be used for prestressing engineering of third-generation nuclear containment;
• A full set of special tension jacks for nuclear anchor can be provided;
• It has various types of prestressed pipe forming and processing equipment such as pipe expanding machine, pipe bending machine and pipe making machine;
• Automatic tensioning pump station can provide strong power for tensioning and pipeline forming equipment.

1. Grouting cap   2. Strand   3. Wedge  4. Anchor head   5. Bearing plate   6. Grouting connector

OVM Cryogenic Anchorage for LNG Project

• PT system can be applied to -196℃ working environment, anchoring performance is stable, safe and reliable
• Reduce the bending Angle of steel strand and reduce the local stress concentration
• Provides related prestressed professional subcontracting technology services;
• Provide technical support for field test project of LNG storage tank project 
• Typical holes: 12, 15, 19, 22, 27, 31