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Rollers are essential for the operation of sliding windows. They facilitate the smooth sliding motion, allowing users to easily open and close the windows without excessive force or strain. A well-functioning roller system minimizes wear and tear on the window frames and tracks, extending the life of the windows themselves. Additionally, high-quality rollers contribute to better insulation, reducing energy loss and enhancing the overall efficiency of the home.

There are differences in their chemical composition, but the primary difference between cast iron and wrought iron is in how they’re produced: cast iron is iron that’s been melted, poured into a mold (i.e. a “cast”), and allowed to solidify into its current shape. Wrought iron, on the other hand, is iron that’s been heated and hammered with tools (i.e. “wrought,” the archaic past tense of “work”) to form it into a precise shape.

Cracks, burrs, peeling or corrosion are not allowed on the surface of the aluminium profile. No obvious scratches, craters or bruises are allowed. In the transportation of aluminium profiles, ensure that the protective film is intact, and the handling process should pay attention to the phenomenon of bruising.