Current label: Rectangular tube manufacturer wholesale
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Concept and classification of rectangular tube: rectangular tube is a kind of light thin-walled steel tube with hollow square section, also known as steel cold-formed section. It is a shape steel with square section and overall dimension made of Q235 hot-rolled or cold-rolled strip or coil as the base material after cold bending and forming and then high-frequency welding. Hot rolled extra thick wall square tube is in the condition of wall thickness increase, and its corner size and edge straightness are up to
