floor hinge TD-7300 sus202/sus304

→floor spring Inside pressure reducing valie: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 . → General design ,suitable for left or right hand to open the door in single and both sides. → Use low temprature frostbite hydraulic oil .ensuring the normal door-closing speed when the temperature is forty degree below zero degree. → For cement container, 5mm adjustable in length and width , and 2 degree vertically adjustable when the calibration position is zero. →Closing force : 38Nm →Suitable for maximun wide door leaf :1200*2400 mm →The macimun bearing weight : 160kg → Opening angle : 900 /1150 → The products have passed national QB/T 3884-99 Standard