As the skeleton Materials of prestressing concrete structures and bridges, the anti-corrosion performance of prestressing strand play the most key role for the safety and durability of the structure. The impact of corrosion degree of strands to the quality of the projects has been concerned by the international prestressing industry.

　　For improving the anti-corrosion capability to adapt to the evolving prestressing technology requirements, through research and comparison of the current various anti-corrosion strands with anti-corrosion properties, FASTEN introduced the world's most advanced automatic production line in 2003 to produce the Filled Epoxy-Coated Strand(FECS), which meet such standards as ASTM A882/A882M and ISO 14655:1999. The Filled Epoxy-Coated Strands were applied successfully in bridge in 2005.

　　FECS has excellent anti-corrosion performance because its out layer and gap between steel wires are completely filled with epoxy resin. The corrosive medium can’t enter the inner strand because there are no pinholes in the epoxy coating along the surface of FECS through production monitoring and follow-up treatment. So it can be used as the external cables, stay cables etc. without PE coating. The strength of FECS is higher than its parent strand because of its special structure. The grit-impregnated filled epoxy-coated strand has the same bond strength with concrete compared to the parent strand, so it can be used in the inner of concrete structure. At present, FECS occupy more than 80% share of the whole epoxy-coated strand market in the world, it is the preferred anti-corrosion strand product in the prestressing projects.