Product Information Finish: Unpolished Select a Product Part NumberMaterialTube ODWall Thickness B31W-G250200U304 Stainless Steel2-1/2" x 2".065 B31W-G300200U304 Stainless Steel3" x 2".065 B31W-G400250U304 Stainless Steel4" x 2-1/2".083 B31W-G600300U304 Stainless Steel6" x 3".109 B31W-R600400U316L Stainless Steel6" x 4".109 B31W-R800400U316L Stainless Steel8" x 4".109 B31W-G200150U304 Stainless Steel2" x 1-1/2".065 B31W-G300100U304 Stainless Steel3" x 1".065 B31W-G400300U304 Stainless Steel4" x 3".083 B31W-G600400U304 Stainless Steel6" x 4".109 B31W-R10075U316L Stainless Steel1" x 3/4".065 B31W-R15050U316L Stainless Steel1-1/2" x 1/2".065 B31W-R7550U316L Stainless Steel3/4" x 1/2".065 B31W-G200100U304 Stainless Steel2" x 1".065 B31W-G300150U304 Stainless Steel3" x 1-1/2".065 B31W-R15075U316L Stainless Steel1-1/2" x 3/4".065 B31W-R300150U316L Stainless Steel3" x 1-1/2".065 B31W-R400250U316L Stainless Steel4" x 2-1/2".083 B31W-G300250U304 Stainless Steel3" x 2-1/2".065 B31W-G800400U304 Stainless Steel8" x 4".109 B31W-R200100U316L Stainless Steel2" x 1".065 B31W-R250200U316L Stainless Steel2-1/2" x 2".065 B31W-G250150U304 Stainless Steel2-1/2" x 1-1/2".065 B31W-G400200U304 Stainless Steel4" x 2".083 B31W-G800600U304 Stainless Steel8" x 6".109 B31W-R10050U316L Stainless Steel1" X 1/2".065 B31W-R150100U316L Stainless Steel1-1/2" x 1".065 B31W-R200150U316L Stainless Steel2" x 1-1/2".065 B31W-R250150U316L Stainless Steel2-1/2" x 1-1/2".065 B31W-R800600U316L Stainless Steel8" x 6".109 B31W-R300250U316L Stainless Steel3" x 2-1/2".065 B31W-R400200U316L Stainless Steel4" x 2".083 B31W-R400300U316L Stainless Steel4" x 3".083 B31W-R20075U316L Stainless Steel2" x 3/4".065 B31W-R300100U316L Stainless Steel3" x 1".065 B31W-G400150U304 Stainless Steel4" x 1-1/2".083 B31W-R300200U316L Stainless Steel3" x 2".065 B31W-R400150U316L Stainless Steel4" x 1-1/2".083 B31W-G150100U304 Stainless Steel1-1/2" x 1".065 B31W-R600300U316L Stainless Steel6" x 3".109