Introducing our premium quality 400mm Square Tube - the perfect solution for all your industrial piping needs. Our square tube is manufactured using the latest Tube Mill and Pipe Mill technology, ensuring a high-precision product with consistent dimensions. We use only the best Saw Blade-SANSO technology to ensure a clean and smooth finish on every piece of square tube. Our team of experienced professionals uses state-of-the-art equipment to guarantee the highest standards of production. As a leading China-based manufacturer, supplier, and factory of steel piping products, we have a proven track record of delivering superior quality products and reliable service to our customers. Our 400mm Square Tube is no exception, and we are confident that it will meet all your industrial piping requirements. Choose our 400mm Square Tube for its durability, strength, and versatility. With excellent corrosion resistance and a wide range of sizes available, it is suitable for a variety of applications. Buy with confidence and trust our expertise in the burgeoning steel pipe industry.