3-piece weld-on hinges with an additional center roller: They distribute the load across two joints, provide more lateral stability for the leaf, and reduce tilting. Load capacities ranging from 100 to 350 kg per pair (Series 410 and 415, lengths 104 to 205 mm), as well as heavy-duty flat and angle hinges rated for 800 kg—available with either Ball bearings or washers. Pin is loose and galvanised.