The door can be said to be very important furniture, every place needs to use the door, so, the door hinge is very important, if the door hinge damage or wear, the door will not be easy to open, next let me introduce you how to adjust a door hinge.
Fire doors are a very important safety feature of any building. Fire door require the use of high-quality fire protection hinge. So what are the requirements for high-quality fire-proof Hinges?
1.S1.1 This Standard establishes requirements for lightweight, standard weight, heavy weight and detention hinges. Cycle tests, lateral and vertical wear tests, friction tests, strength tests, finish tests.