1. PRODUCT OVERVIEW VHF finger expansion joints made by Vinh Hung Investment and Production Co., Ltd (VinhHung IP), include 2 types: Cantilever VHF-C and over-gap VHF-O, according to: â?¢ AASHTO LRFD standards â?¢ ASTM D 3542 â?? 92 (2003) standards VHFâ??C and VHFâ??O are synchronously manufactured with high accuracy finger plates and accessories like bolts, rubber sheets-water prevention steel plates that bring profitability to new construction as well as inspection and maintenance work in service. VHFC and VHF O accommodate the medium movement to big movement and can be used for both straight and skew bridges. 2. PRODUCT CHARACTERISTICS Totally accommodate the medium and large longitudinal movements, and also vertical and transverse movement if any... Simple installation, maintenance and replacement, which allows to replace the individual finger plates in short period of time and for each lane. High loading resistance capacity, especially the impact load. Also available for skew bridges. Rubber seal system is designed to be totally water-tight and prevent dust and debris. Can be designed to compatible with different thicknesses of bridge decks. To ensure the long-lasting durability, VHF finger expansion joints are protected from corrosion with methods like: paint with 2-component epoxy coating, PU-based painting (Polyurethane).., zinc coating according to ASTM A123â?¦, and especially Al-Mg coating (Al 5% and Mg 95% ratio) which ensures the durability of 100 years. This method is proved by the brine spraying test in 6000 hours (dry-wet 8hour cycles) according to ASTM B117 standards.