Stainless Steel Stock is the only place on the web to purchase small quantity stainless steel stock products. Our parts include: sheets, flats, squares, rounds, plates, angles, polished tubes, pipes, shafts, and bars of stainless steel.Stainless Steel Stock is the only place on the web to purchase small quantity stainless steel stock products. Our parts include: sheets, flats, squares, rounds, plates, angles, polished tubes, pipes, shafts, and bars of stainless steel.