Products We Sell Details

Metallic Sheath

Product Description

A metallic sheath for a post tensioning technique wherein an external peripheral surface or external and internal peripheral surfaces thereof is (or are) coated with phosphate layer (or layers) and plastic resin layer (or layers) thereupon and if possible further coated with a solid lubricating layer ahead the internal peripheral surface of the sheath.

The phosphate layer of the external peripheral surface protect the metallic sheath from corrosion by negative ion within concrete, while, on the other hand, that of the internal peripheral surface prevent the electrochemical corrosion between the internal peripheral surface of the sheath and sinew.

Moreover, if a solid lubricating, layer is offered at the internal peripheral surface of the sheath, the sliding friction between the metallic sheath and tendon can be decrease so that prestressed force can be increased as much