Floor Spring - Cr-mo Alloy Steel, 500,000 Cycle Quality Tested | Built-in Relief Valve, 90-degree Return Accuracy

We are engaged in offering excellent quality Floor Spring to our valuable clients.
Technical material:
1.We bring in advanced German technology and machine,producing procedure refer to ISO-9001 standard.
2.The main components' outlook are all forging by CR-MO ally steel,and the quality are quench by heat treatment,after rubbing,all accessory should immerses into high quality hydraulic pressure oil which should be able to bear low temperature.All of the component safe to use at 90degree.
3.Built-in relieve value,prevent damaging the main unit and oil leakage,caused by shutting the door by strong pressure or wind.
4.The accurated pointing capability,which make sure it always can return to 0 degree whenever it's forth orientated.And it can be accurated hold on at 90degree.
5.Open-door moment 40NM,close-door moment 26NM,above 25NM in 5 degree.
6.This floor hinge passed the quality test which held by national technique department of 500,000 cycles,quality steady and operation normali met technical standard.