Angle steel is a kind of L-shaped steel, usually made by hot rolling or cold bending process. It has the characteristics of stable structure, easy installation and strong bearing capacity. It is widely used in construction, machinery, electricity, transportation and other fields.

H-shaped steel is a type of steel with a cross-sectional shape similar to the letter "H". Due to its excellent mechanical properties and efficient material utilization, it is widely used in construction, bridges, machinery manufacturing and other fields.

I-beam (also known as H-beam or I-beam) is named because its cross-sectional shape resembles the Chinese character "工". It has high bending strength and stability and is widely used in engineering fields such as construction, machinery, and bridges.

Steel is a long strip of steel with a groove-shaped cross-section. Because it has protruding flanges on both sides (commonly known as "edges"), it has good bending, torsion and load-bearing capabilities, and is widely used in construction, machinery, transportation and other fields.

Flat steel is a long strip of steel with a rectangular cross-section. It is usually thin (commonly 3~60mm) and narrow (10~200mm). It has the characteristics of flexible processing, high surface utilization, and easy connection. It is widely used in construction, machinery, hardware, decoration and other fields.