- 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.
fireproof door test,ទ្វារការពារភ្លើង, ទ្វារការពារភ្លើងជាមួយកញ្ចក់,steel security door,ទ្វារឈើ វាយតំលៃភ្លើង,metal door frame drill,
ទ្វារភ្លើង 1 ម៉ោង 20 នាទី ទ្វារភ្លើងfireproof door test,ក្រុមហ៊ុនផលិតទ្វារធន់នឹងភ្លើង,metal door frame drill,និយមន័យទ្វារចេញ,steel security door,
steel security door,កត្តាទទឹងទ្វារចេញ, ការបើកទ្វារច្រកចេញសង្គ្រោះបន្ទាន់,fireproof door test,ទ្វារចេញចូលភ្លើង, ទ្វារភ្លើងដែលមានឡៅតឿ,metal door frame drill