Our Stainless Steel Square Tube is available in Grade 304, as standard (also known as 1.4301). This the most versatile & commonly used grade of Stainless Steel. It is a general purpose grade that is excellent for welding, machining & fabricating. It is also a popular choice for its excellent corrosion resistance. Square Tube has been applied in many applications including; Decorative Railings & Signs Frame Building Furniture