Does the plastic window sash have a drainage hole or an air pressure balance hole? Is there a drainage hole in the dead glass of plastic steel window? What is the basis? Everybody help.

In principle, the drainage hole of plastic steel window sash is to solve the problem that the sealing performance of rubber strip sealing material is not strong, and the rainwater generated is poured into the inner cavity. The process of discharging water to the outside. Mainly to alleviate the impact of heavy rain or rainstorm weather, resulting in rainwater pouring into the room. This is the initial idea and train of thought of drainage hole design.

Now many manufacturers explain that the drainage hole is an air pressure balance hole, because when the outdoor air pressure is high, because of the difference between indoor and outdoor air pressure, it will have a greater impact on the deformation of plastic steel windows. The balance hole is added, which can alleviate the instantaneous impact of air pressure on the window and is beneficial to the overall stability and durability of the window.

Dead glass also needs drainage holes. This can refer to international standards. GB88 14。 This is a plastic steel standard, and the design of drainage holes strictly implements international standards.