Steel door hinges are usually made of iron or steel, although there are also many that are made of other materials. Steel doors are by far the most popular, but due to the fire risks involved with having a steel door left open in a cold garage or workshop, most people prefer to have the doors that are used for residential use be constructed with safety features such as an anti-backflip feature or a locking device installed by a qualified electrician.
2021-04-28