详情
Features:
1. Delay speed *****0 degrees, closing speed section
****5 degreesand latching speed section
***0 degreecontrolled by
three independent hydraulic pressure
valves.
2. Fine oil seal to prevent
leakage.
3. High quality casting aluminum alloy
body coated with three layers of glossy paint prevented from
oxygenation.
4. The high-carbon steel geer shaft works smartly with
least tranfigure through high frequency of hardening and
tempering.
5. Well paintied moving arm against
erodent.
6. Self closing with/without hold-open feature;
non-handed.
7. Passed the fire-testing by National Center for
Quality Supervision and Testing of Fire Building
Materials.
8. Applicable for
wooddoor,steeldoor,firedoor,etc.
9. Colour options: Silver, black, gold,white.
other options are available upon request.
*0.
OEM available.
*1. Opptional materials:
mirror,satin,titanium.
*2. On time in full.
*3. Installation types: vertical, parallell,
sliding-rail on the door.
*4. Self quality test for oil(temperature test),
spring & operation of door closer(durability
test)
*5. Test cycles: at least *****0; durability: at
least 2 years; with better accessories, more test cycles passed and
longer durability
