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Due to the direct correlation between the price of stainless steel handles and the price of stainless steel, the price of aluminum alloy doors and windows is generally relatively stable during a certain period. In general, the price of high-quality aluminum alloys is 30% higher than that of low-quality aluminum alloy door and window products. Poor quality stainless steel handles usually use recycled aluminum extruded aluminum profiles containing a large amount of impurities, and some of the aluminum profiles used have a wall thickness of only 0.6 to 0.8 millimeters.
Both in terms of tensile strength and yield strength, they are significantly lower than the relevant national regulations. This type of stainless steel handle, especially stainless steel handles, is very unsafe. Therefore, when choosing products, owners should not underestimate their own and others' personal safety for a temporary advantage.
2) Performance
The performance of stainless steel handles varies depending on the range of use, but the following aspects usually need to be considered:
Strength: In the selection of profiles for aluminum alloy doors and windows, can they withstand ultra-high pressure;
Air tightness: In terms of door and window structure, whether the inner and outer frames of the doors and windows are tight, and whether the aluminum alloy outdoor windows are tight and airtight;
Water tightness: whether there is water accumulation or leakage;
Sound insulation: It depends on the sound insulation effect of insulating glass and other special sound insulation and airtight strip structures, as well as the durability of other door and window accessories such as opening and closing force, insulation, nylon guide wheel durability, and opening and locking durability.
3) Processing
The technical content of stainless steel handles is not high, and the degree of mechanization is currently not high. Most of them still rely on manual operation by installation workers, which requires operators to have a good awareness of product quality. It is very important to enhance the proficiency and product awareness of operators during the production process.
High quality aluminum alloy doors and windows, finely processed, with smooth tangents and consistent angles (the main frame material is usually at 45 or 90 degrees), should not show obvious gaps during the splicing process, with good sealing performance and smooth opening and closing.
If low-quality aluminum alloy doors and windows, especially stainless steel handle products, are not processed properly, they will have sealing problems. Not only will they leak air and rain, but also under the action of strong winds and strong external forces, the glass will crack and fall off, causing damage to property and even personal injury to the owner.
4) Materials used
Stainless steel handle materials generally include three aspects: aluminum profiles, glass, and hardware
Owners often pay more attention to the thickness of aluminum profiles and glass when choosing products, but their requirements for hardware are not very high, which is not comprehensive. In fact, the country has certain standards for aluminum alloy doors and windows. The aluminum profiles used for high-quality stainless steel handles generally meet national standards in terms of thickness, strength, and oxide film
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