floor spring TD-388 SUS202/SUS304

floor spring suitable for the size of door 1200*2300mm; The door bear is 130-150KG; Angle of turn on the door ≤1050 suitable for the left,right door open and single double action. (A) The body is thin and beautiful,used imported spring,can run 500 thousand times (B) Used low temperature&resist freeze hydraulic pressure oil,keep the door smooth when it is -400 cold; (C) After special design,control the bearing of the spring hinge,lighten the strength when open and close the door. (D) high strength and leak prevent configuration were used for extend the life of it.as it can avoid mangle and oil leak by strength or strong wind from outside; (E) cement box can be adjust 5mm length and 5mm width.portrait adjust±20,when calibrate zero site.it makes products more easy.