- 22
- Nov
Fireproof Door Test,Steel Security Door,Metal Door Frame Drill
The steel fire door can be opened with only 1kg force, and the opening tension is less than 50N, so even people in wheelchairs can open it easily. The steel fire door shall have good air tightness, be closed in place and tight, and will not leave the gap between the door and the air conditioner and heater overflowing.
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फायर डोअर 1 तास,20 मिनिट फायर रेटेड दरवाजा,fireproof door test,आग प्रतिरोधक दरवाजा निर्माता,metal door frame drill,निर्गमन दरवाजा व्याख्या,steel security door,
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