Stainless steel square tube has inside and outside radius corners, with a protruding interior weld seam, which is ideal for all structural applications where greater strength and superior corrosion resistance are required. 

And mill finishes stainless steel square tube is more durable and widely used for all types of fabrication projects exposed to the elements - chemical, acidic, freshwater, saltwater, etc.

With great corrosion resistance, stainless steel square tube is a popular choice for railings and fencing. We offer welded stainless steel square tubes in 304, 316, 430 and 409. Don't forget to note the outer dimensions/height and wall thickness when considering square tubing sizes.