When purchasing plastic steel doors and windows, it's important to avoid cheap, low-quality products. These may seem cost-effective at first, but they often lead to long-term issues like poor insulation, frequent maintenance, and even structural problems.
Focus on the quality of the glass and hardware. The glass should be flat, clear, and free from water spots or bubbles. It should not come into direct contact with the plastic frame, and the sealing strip must fit tightly in the gaps to prevent air or water leakage. The hardware—such as hinges, handles, and locks—should be complete, properly positioned, firmly installed, and operate smoothly without any resistance.
The surface of the door and window should be smooth and even, with no visible weld breaks or cracks. The sealing strip should be flat, not curled or damaged, and should have no strong odors. When the door or window is closed, there should be no gap between the sash and the frame, ensuring a tight seal.
All components should be connected seamlessly without visible screw connections. This not only improves the appearance but also enhances durability. Sliding doors and windows should open and close effortlessly, with a smooth, quiet motion and no dust or debris falling off during use.
High-quality plastic steel doors and windows should have reinforced steel profiles embedded within the frames and sashes for added strength and stability. The glass should be perfectly flat and securely mounted, with no direct contact between the glass and the plastic profile. Avoid using glass glue—instead, use proper sealing methods. If you're installing double-glazed units, make sure there's no dust or moisture trapped between the panes.
The moving parts, such as latches and locks, should close tightly and function smoothly. Any sticking or stiff movement can indicate poor craftsmanship or substandard materials.
Finally, remember that genuine plastic steel doors and windows are manufactured in controlled factory environments using professional equipment. They should never be assembled or produced on-site, as this can compromise their quality and performance over time.
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