... 2.Environmentally friendly, safe 3.Versatile 4.Competitive price.. Welding hinge Weld-On Hinge Weldable Hinge Round Hinge 1. ... transformer enclosures, tool boxes, traffic light controls, truck/trailer bodies for welding purpose 2. Material: zinc-plated/original iron, stainless steel, ... the bronze washer. This is done by not completely welding the hinge near the bushing. Also, the hinge cannot ...