1. Width of door max:   EN4#: 1300mm

2. Weight of door max: EN4#: 180kg

3. Max open angle: 116°

4, 500, 000cyles tested

5, Special oil used for the different temperature from -30C to 45C,

6, Inside pressure reducing value: Using to prevent the destruction of the floor spring or oil leakage on occasions that the door is closed by strong pressure or wind force

7. Double action two sections speed valve can adjust the closing door speed between 90° -20° And 20° -0° Separately

8. Filled with high quality anti-icing hydraulic oil, ensuring smooth and flexible operation of mechanical parts at different temperatures

Developing Hardware Enterprise was built in 1992. It had become a professtional enterprise with more than twenty years experience in developing and producing a series of hardware products such as floor spring and patch fitting.