At the same time, it has a good standard in product performance, appearance value and environmental protection performance.
Doors and windows are divided into closing members or partition members according to their different positions. There are different design requirements to have functions such as heat preservation, heat insulation, sound insulation, waterproof and fire prevention. And the new requirement is energy saving. The heat loss from the gap between doors and windows in cold areas accounts for about 25% of the total heating heat consumption. The air tightness requirement of doors and windows is an important content in energy-saving design.
Doors and windows are an important part of building envelope system.
Function 2: Doors and windows are also an important part of architectural modeling (the contrast between reality and reality and rhythmic artistic effects play an important role), so their shape, size, proportion, arrangement, color and modeling have a great influence on the overall modeling of the building.