Stainless Steel ASTM A554 Tube Factory: ASTM A554 Welded Mechanical Tube, Grade MT304, MT304L, MT 316, MT316L, MT310, MT310S, OD 10.3-609.6 mm, WT 0.5-15 mm. Product: Stainless Steel ASTM A554 MT304 Welded Mechanical Tube.Grades: MT304, 304L, MT 316, 316L, MT310, 310S.Outer Diameter: 10.3 to 609.6 mm.Wall Thickness: 0.5 to 15 mm.Length: 6 Meters.Application: Applied to Construction.