Economic Double Action Floor Spring like DORMA BTS84(1800-2)
 

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:120kg                                                                                                                                                                            7.Max door opening angle:105?                                                                                                                                                                 8.Max door width& height:1200mm×2400mm                                                                                                                                                     9.Dimension of appearance :306×108×40mm                                                                                                                                                 10.Lowest working temperature:–45℃                                                                                                                                                     11.Tested cycles:500,000                                                                                                                                                                                       12.Hold-open at 90?(double action open floor spring)