ironing board cover 120 x 40 cm_90 inch square tablecloth

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

Furthermore, it easy to strengthen it by heat treatment by placing it at a temperature of at least 320° F for several hours.