According to the inquiry, the traffic network shows that there are obvious differences in design and function among the frame tube beam, rectangular beam and ingot beam, and the specific differences are as follows:

1, circular tube beam: This kind of frame beam is round and usually hollow. Its advantage lies in its strong bearing capacity, which can reduce the weight of the frame and improve the performance of the whole chassis. This design is usually used in large buildings and bridge structures, such as cranes, overpasses and bridges.

2. Rectangular beam: This is one of the most common beam forms, and its cross section is rectangular. Its advantages are stable mechanical properties and wide application range, and it is suitable for beams of general building structures. This kind of beam has high rigidity and strength, and can bear great load.

3. spar: also called subframe, it is not a complete frame, but a bracket supporting the front and rear axles and suspension. Its function is to block vibration and noise and reduce its direct entry into the carriage, so it appears in luxury cars and off-road vehicles. This design can provide better comfort and stability.