Hardware mold life and mold structure design, mold steel selection, heat treatment, surface treatment, stainless steel "target=_blank> stainless steel material.
4. When installing the hardware with the fastening screws, it is necessary to have a metal lining plate. The thickness of the lining plate should be at least twice the distance of the fastener. Do not fasten to plastic profiles or use non-metallic linings.
5, hardware accessories should be installed last, door and window locks, handles, etc. should be assembled after the window door fan is inserted into the frame to ensure accurate position and flexible switch.
6, after the metal stamping parts are installed, pay attention to maintenance, to prevent rust and erosion. In daily use, it should be lightly closed to prevent hard opening and damage. No noise, there is the current nylon wheel. It not only pushes up without noise, but also smoother, lighter, and the service life is not shorter than the above various pulleys. To make the (door) window normal. Smooth operation, it is necessary to give The window selects a high-quality pulley. The inferior pulley looks rough on the surface. It is not smooth. It is not flexible to slide. It is small and light.
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