Gaoyao City Kaida Hardware And Decoration Co., Ltd.

high stability dorma type floor spring for door JU-68A

high stability dorma type floor spring for door JU-68A
Product Detailed

floor hinge data
1.body: wrought iron
2.cover:304 stainless steel
3.useful life:500,000 times
4.the rate of leaking :5/1000

floor hinge information:

1.Adopting double-spring design, opening lightly and smoothly,prolonging service life.

2.Inside pressure reducing valve to prevent the destrution on occasion that the door closed by strong pressure or wind force

3.General design, suitable for left and right hand to open the door in single and both sides.

4.Use low temperature frostbite hydraulic oil,ensuring the normal door-closing speed when the temperature is forty degree below zero

5.Cement container, height,width and length can be adjustable which is convenient for assembling

6.Super thin design enable it is convenient to be installed in district with special demands.


  304# stainless steel cover plate


Technological data

Closing force


Suitable for maximum wide door leaf          


The maximum bearing weight


The door closing speed is controlled by the adjusting valve

Operating angle

90 Degree


About 6.5kgs

Container size

Length:20.80cm Width:10.80cm Height:4.20cm

The products have passed national QB/T3884-99 standard






Some drawings of fair show:



Certification of our products:






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