... .05kg/pc,BS1139,EN74 Mainly ProductsDouble coupler,butt joint couler,swivel coupler,straight coupler,girder coupler,sleeve coupler,grav-lock coulerMaterialQ235,Q255,Q345Surface TreatmentZinc Plating, hot ... , AS1576Coupler Packingplastic weave bag then palletized in the steel pallet Swivel Drop Forged Coupler ,1.05kg/pc,BS1139,EN74