Product Description ✅Material: The square tube is made of 304 stainless steel which is resistant to high temperature and corrosion resistance; ✅ Features: The appearance of the square tube is smooth and without burrs easy to use; ✅ Easy to install :The square tube is convenient for welding which can be perforated or slot; ✅ Used: Applicable to mechanical processing Construction project ship assembly and other machinery industry. Note: 1: Due to the difference between different monitors the photo may not reflect the actual color of the item. 2: 1 to 3 mm tolerance allowed If you have any questions please feel free to contact us.