Spring Hinge

A spring hinge is a type of hinge that integrates a spring mechanism to automatically close the door after it is opened. It is commonly used for room doors, cabinet doors, or other doors that require a self-closing function.

Spring hinges are typically made from stainless steel 304 or corrosion-resistant steel to ensure durability, rust resistance, and stable operation over time.

The internal spring mechanism provides the force needed to return the door to its closed position. Some models also allow the door to remain open at a certain angle depending on the design.

Common technical specifications of spring hinges include:

- Material: SUS 304 stainless steel or corrosion-resistant steel.
- Common sizes: 32×25 mm, 36×50 mm, 50×75 mm, 83×83 mm, and 100×73 mm.
- Material thickness: approximately 1.2 mm, 1.5 mm, 1.8 mm, up to 3 mm.
- Pin diameter: around 11.5 mm for larger hinge models.
- Screw hole diameter: from 4 mm to about 10 mm (countersunk).
- Opening angle: typically from 90° to 180° depending on the model.

Spring hinges are widely used for room doors, cabinet doors, industrial doors, storage boxes, and partition systems thanks to their convenient self-closing function and durability.