Elliptical Tube, Standards:ASTM A554,A269,A312,A270,A249, Grades from 201 ,316,304,321,409to 43 Elliptical TubeArt Nr. B H DT4 (110mm)110mm40mm1.5mmT4 (120mm)120mm60mm1.5mmT4 (120mm)120mm60mm2.0mmT4 (80mm)80mm40mm1.5mm Stainless Steel Elliptical Tube