ASTM A269 TP304 Stainless Steel tube Is the most versatile and widely used of stainless steel grades, due to its combination of corrosion resistance, formability, and ductility. Seamless tubing features heavier wall thicknesses for mechanical applications. It is ideal for food and beverage, pharmaceutical, and chemical and petrochemical processing applications. ASTM A269 TP304 Stainless steel tubes are finished in accordance with customer needs regarding dimensional and wall thickness specifications as well as heat treatment for more demanding applications. In general a stainless steel seamless tube is manufactured in sizes from 1/2” to 8”NB according to current standards API, ASTM, and ASME.