Design and making technology of cantalever hollow profile die;

In the hope to provide a meaningful reference for the similar projects of bridge consolidating,the article expounds the success story of the crack-mending and intensifying of cantilevered end of cantilever hollow pier in a bridge in Dongjiang River,Guangdong,through the measures of imposing pretension force and uninstalling cantilevered end of self-lock jack coping.

Aluminum alloy extruded products, especially corrosion resistant mechanism of dry sealing technique of hollow profile and the character of packaging process were introduced , and the perspective and significance of application and dissemination of inspecting way were also described.