A good way to identify plastic steel doors and windows with or without steel lining

The steel liner embedded within the plastic profile plays a crucial role in the durability and strength of the window. The plastic frame of the sash is integrated with the steel liner, significantly enhancing the window’s pressure and tensile resistance. After undergoing anti-corrosion and rust-proof treatment, the steel liner should be at least 1.2 mm thick to ensure long-term performance and structural integrity.

Hebei Fengming Company specializes in door and window seals, giving them deep expertise in understanding plastic profiles. Based on this experience, we’ve compiled several methods to help consumers identify whether a steel liner is present in plastic steel windows.

First, you can check the weight of the window. If it feels unusually heavy, it likely contains a steel liner. This is one of the simplest and most effective ways to determine its quality.

Second, carefully examine the window frame and sash for any visible nails or rivets. Since the steel liner must be securely fixed to the plastic profile, it is typically fastened using automatic nails or rivets. If you notice small caps or protrusions on the outer surface of the window, this could indicate the presence of a steel liner.

Third, use a magnet to test for the presence of steel. If the magnet sticks to the window frame, it's a strong sign that a steel liner is embedded inside.

These methods can help you make an informed decision when purchasing plastic steel doors and windows. By ensuring the presence of a proper steel liner, you can enjoy greater durability, stability, and comfort in your home. We hope these tips will assist you in finding the right product and enjoying a more peaceful and pleasant living environment.