What is the meaning of the maximum load of doors and windows hardware
But open is not flexible, shaking big, the heat is unreasonable. This is not the result of hardware accessories. Then the real doors and windows hardware accessories should have what kind of function? In addition to meet the physical properties of doors and windows, but also mechanical properties
Mainly to see the size of the window, as well as the window of the material ~
Size of the same window, if the glass thickness is not the same, the weight difference is very large, for example, the size of the same 5 mm single glass is 5 +9 A +5 hollow glass light weight half.
Is the weight of the windows of the windows where the hardware is installed
