aluminum pivot door hinge China factory

A hinge (also known as a hinge) for a window or door is a mechanical device that connects a window or door to its frame and is used to enable the window or door to rotate or open. It usually consists of two or more pieces of sheet metal joined together by pins or screws. Hinges are designed to allow the door or window to rotate in one or more directions to enable opening and closing.

There are many different types and forms of hinges, some of the common ones include:

A. steel hinges: These consist of a sheet metal tab and a steel pin and are the more common type of hinge for windows and doors. They have a sturdy design and are suitable for many different types of doors and windows.

B. inlaid hinges: these hinges are usually used for recessed windows and doors and are designed so that the window or door can be fully recessed into the frame, creating a small gap between the window or door and the wall.