Steel windows and aluminum windows compare which is more expensive
Sound insulation performance:
Aluminum windows and plastic window gap sealing level is basically the same, the sound insulation performance is basically the same.
Lighting performance:
Plastic window window lighting performance than the aluminum window difference, the block of a single component shading area than the aluminum window about 10%, vision and decorative effect is poor, is not conducive to building energy saving.
Air tightness:
Plastic window due to the box, fan components are welded, so the air tightness should be slightly better than the spiral of the aluminum alloy window, but the aluminum window profile height accuracy, box, fan with more closely, so the two are still in a Level level.
3, the insulation performance: aluminum window insulation performance as plastic window is good, but the ratio of the two window heat transfer ratio is only 1.36 times (single window) and 1.44 times (single frame double glass).
Wind pressure strength and watertightness:
Plastic windows due to the strength and rigidity of the material is low, although through the processing of steel to enhance, but its wind pressure and watertight performance than the aluminum window about two levels. Moreover, due to the steel window steel lining steel is not in its profile cavity angle into a complete frame system, window frame, fan four corners and T-shaped plastic welding angle strength is relatively low, according to the end of 1998 Shanghai enterprises inspection 425 Batch steel window three examples of the situation after the serious analysis of the "plastic window in the high - rise buildings should be used with caution.
