High strength square tube is a type of silicon carbide crystal with a distribution in the cubic crystal system. The hardness of high-strength square tube is very high, generally greater than HRB500, equivalent to HRC50 or above. Due to the fact that high-strength square tubes belong to high alloy steel, their performance differs greatly from ordinary carbon structural steel, so their application range is relatively narrow.

High strength square steel pipes have good high-temperature performance, wear resistance, heat fatigue resistance, and low-temperature impact resistance; At the same time, it is also a good cold bending material that is easy to perform secondary processing such as cold bending and welding; In addition, it also has certain corrosion resistance, oxidation resistance, and good resistance to stress corrosion cracking.

What is hot-rolled strip steel: Hot rolled strip steel is a rolling process carried out below the recrystallization temperature, with the main purpose of reducing internal stresses in the metal and improving surface quality.