... manufacturer 3.meet ANSI standard 4.partner:FLSMIDTH duct expansion joints,duct expansion joint,fabric expansion joints 1:Uses: Fabric ... stress inherent in some metal expansion joints. They are for use on on Boiler Ducts, Air Preheater Ducts, Precipitator ... spliced or open ended for field splicing. 4:applicable figure: 5:certificates obtained: duct expansion joints,duct expansion joint,fabric expansion ...