Economic Double Action Floor Spring(1800-5) 
The floor spring has the following characteristics:
1.Surface Paint: No painting peel
off                                                                                                                                                                                       2.We have passed five different test process(such as pressure-relieving processing) to prevent the oil spill.   Leak rate:0.3%  
3.Unpack Passed Rate:99%
4.We use the hydraulic oil with Anti-fire, Anti-burning, Anti-freezing,could be operated at –45℃                                                                                                
5.The main parts of the machine core have been done the heat treatment processing,it can prolong the working life.
6.Max door capacity:200kg                                                                                                                                                                            7.Max door opening angle:105 degree
 8.Max door width&height:1600mm×2800mm   
9.Dimension of appearance :302×146×54mm                                                                                                                                                 10.Lowest working temperature:–45℃                                                                                                                                                     11.Tested cycles:500,000                                                                                                                                                                                       12.Hold-open at 90?(double action open floor spring)