curtain

A hinge is a mechanical connecting element designed to rotate or open/close two parts of a structure relative to each other. It consists of two plates (cards) and an axis (hinge) that provide a movable connection. It is used for doors, covers, hatches, panels, and other elements that require repeated movement with a fixed trajectory. Main characteristics: Material: steel, stainless steel, brass, aluminum, or polymers (depending on requirements). Mounting type: surface-mounted, mortise, concealed, welded. Purpose: domestic, industrial, furniture, or technical. Features: withstands repeated opening/closing cycles, may have bearings or springs for smooth operation.