[China Aluminum Network] strength Broken bridge aluminum alloy in the wind pressure is much stronger than the plastic steel window, in most cases do not have to add steel lining, broken bridge aluminum alloy used in 40 multi-storey residential upstairs there is no problem, fully meet the requirements of anti-typhoon. In this regard, the plastic doors and windows do not do so well, and now do high-level use of plastic windows, a long time will leak, and the wind will tremble. Durability Foreign research shows that broken bridge aluminum alloy has been used in Europe for more than 30 years. Wenzhixin plastic profiles have been tested for accelerated aging for 6,000 hours according to European standards. The performance has reached and surpassed the requirements of European newer EN12608-2002, and is second to none in profile. There is no dispute. Broken aluminum alloy on the aluminum alloy itself is good durability, but because the dowels, rail material is non-aluminum metal, practice has shown that electrolytic corrosion occurs, many old aluminum alloy doors and windows are not flexible due to this reason. in summary Broken bridge aluminum window: good insulation, sound insulation, high strength, airtight, watertight, good fire and security, long service life. Plastic steel window: economical, easy to change color, low strength, poor sealing, poor fire resistance, easy to aging.