All Ornamental tube is in accordance to a ASTM A554 Dimensional tolerances in accordance to ASTM A450 and/or ISO 1127 D3T3. Ornamental tubing Standard length is 6 meters. All tubes have the heat number, size and grade stamped on the inside of the tube . Euro Steel carries a wide range of stock of ornamental tubing in grade 304 and grade 316 100 100mm square steel tubes price Stainless Steel Tube - All Shapes & Sizes metals4UWe have a wide range of stainless-steel tube available with outside diameter ranging from 12.7mm to 254mm in various wall thicknesses in stock to ensure a quick delivery. We offer our range of stainless-steel tube (or pipe, pole, piping, tubing , as it is also often referred to as) in steel grades 304 and 316.