This practical guide explains how to choose interior door hinges, covering four common types: butt hinge, butterfly hinge, loose pin hinge and concealed hinge. It analyzes their unique structures, installation methods, load-bearing performance and applicable scenarios, with a detailed comparison table and key selection factors. As one of China’s top 50 hinge manufacturers with 12 years of industry experience, Degol Hardware provides CE-certified, durable interior door hinges for global residential decoration and commercial interior projects.