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Notably, extrusion is the primary technique used for making these designs of aluminum profiles.

The most fundamental part of a wrought iron fence is the post. These vertical structures serve as the backbone of the fence, providing support and strength. Typically made from solid iron, the posts are installed deep into the ground to ensure stability. The height and thickness of the posts can vary based on the desired aesthetics and level of security. Additionally, decorative post caps can be added to enhance the overall look, giving each fence a unique character.

Depending on the aspect of their application, their cross-sectional shapes can vary. Generally speaking there are four main cross-sectional shapes of fixed window profiles: flat, round, unequal polygon and equal polygon. Among them, the plane type is commonly used in door frames, wall corner lines, etc.; round profiles are mainly used for aluminum alloy pipes; unequal polygons and equal polygons are commonly used for window frames, partitions, etc.

4. Door profile