Aluminum alloy doors and windows are the first products to replace steel doors and windows. Aluminum alloy extruded profiles are used as frame, stile and fan materials. Ordinary aluminum alloy sliding doors and windows are mainly made of aluminum alloy, which has better sealing and sound insulation effect than steel windows and doors, and is easier to process than pure wood doors and windows and steel doors and windows.
1. Look at the material
The main materials for aluminum alloy doors and windows generally include three aspects: aluminum profiles, glass, and hardware. The profiles used for high-quality aluminum alloy doors and windows are exquisite: in terms of individual quality, tempered glass is better than ordinary glass; stainless steel hardware accessories (such as screws, hinges, handles, etc.) are better than aluminum parts.
2. Look at processing
High quality aluminum alloy doors and windows, fine processing, smooth tangent, consistent angle, in the splicing process should not appear more obvious gap, good sealing performance, smooth switch. Poor quality aluminum alloy doors and windows, especially aluminum alloy outdoor doors and windows, if the processing is not qualified, there will be sealing property problems, not only air and rain leakage, but also under the action of strong wind and large external force, the glass will burst and fall off.
3. Look at the appearance
The surface of doors and windows shall be free from obvious scratch, scratch, bruise and other defects. There should be no obvious color difference on the colored surface of adjacent components on doors and windows. There should be no aluminum chips, burrs, oil spots or other stains on the window surface, and there should be no adhesive overflow at the assembly joint.
The performance of aluminum alloy doors and windows usually needs to consider the following aspects: strength, reflected in the selection of profile materials, whether it can withstand ultra-high pressure; air tightness, mainly reflected in the structure, whether the inner leaf and outer frame structure of doors and windows are tight; water tightness, mainly to assess whether there is water accumulation and leakage phenomenon in aluminum alloy doors and windows; sound insulation, which mainly depends on the sound insulation effect and insulating glass Other special sound insulation and air tight strip structure, as well as the durability of other window accessories such as opening and closing force, opening and locking durability.
5. Look at the price
In general, the price of high-quality aluminum alloy doors and windows is about 30% higher than that of inferior aluminum alloy doors and windows. The aluminum profiles extruded from recycled aluminum containing a lot of impurities are usually used for poor quality aluminum alloy doors and windows. Some of the wall thickness of the aluminum profiles used is not up to the standard. Both the tensile strength and yield are greatly lower than the relevant national regulations. This kind of aluminum alloy doors and windows, especially the aluminum alloy outdoor doors and windows It's not safe, so don't underestimate the personal safety of yourself and others while shopping.