Welcome to our factory, where we produce high-quality ASTMA6 Q235 20# Seamless Welded Square Tube. Our square tubes are manufactured using advanced technology and techniques, ensuring durability and reliability. Made with precision, our tubes are resistant to corrosion and have excellent mechanical properties. They are specifically designed to be used in various applications, such as construction, machinery, and transportation. With a smooth surface finish, our square tubes are easy to maintain and install. Trust in our expertise as a factory and invest in our top-notch square tubes for all your project needs.