1. Hot rolled steel tube is a kind of steel tube rolled above recrystallization temperature.
2. Hot rolled steel pipes are divided into general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.
3. Hot rolled steel pipe can destroy the casting structure of steel ingot, refine the grain of steel, and eliminate the defects of microstructure.
4. Therefore, the structure of the steel is dense and the mechanical properties are improved.
