Carbon steel is an iron-carbon alloy with carbon content ranging from 0.0218% to 2.11%. Also known as carbon steel. Generally also contains a small amount of silicon, manganese, sulfur, phosphorus. The higher the carbon content of general carbon steel, the greater the hardness, the higher the strength, but the lower the plasticity.
Steel square tube divided according to the shape of the section, is a name for square pipe and rectangular pipe, that is, steel pipes with equal and unequal side lengths. It is made of strip steel that has been processed and rolled. Generally, the strip is unpacked, flattened, coiled, welded to form a round tube, and then rolled into a square tube from the round tube and then cut to the required length.
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