1. Hinge shell material: cold-rolled steel
2. Hinge spring : spring steel wire
3. Head part of hinge : stainless iron
Surface treatment: Electro galvanizing
1.Bright and clean surface , free-rust, no burr to hurt , pass 48h salt spray test.
2.When the open angle is over 10°, can stop anywhere, can open to 87°±2°.
3.Flexible rotation, free noise and has no obvious shaking in the process of opening.