... 2008, EN74 4.)Note:OEM Serviced Specifications1.)coupler weight:1.40kg2.)material:Q235,Q255,Q3453 ... Galvanized,painted,eletroplate5.)standard:EN74 Main BusinessItemGerman Type Scaffolding Drop Forged Double CouplerMaterialQ235Surface TreamentHDG, ... Haki,Kwikstage),Scaffolding Couplers(German type,American type,British type,Korean type,Indian type,Australian type,Mideast type),Shoring prop,Formwork and ...