Quick Reference Guide for Carbon, 304 Stainless Steel, and Galvanized Tubing
  Wall Thickness Weight - Pounds per Foot
Size (OD) 16 Gauge 14 Gauge 11 Gauge 16 Gauge 14 Gauge 11 Gauge
1.5" .065" .083"   .996 1.256 1.769
1.75" .065" .083"   1.170    
2" .065" .083" .120" 1.343 1.699 2.409
2.125" .065"     1.430    
2.25" .065" .083" .120" 1.517 1.921 2.730
2.5" .065" .083" .120" 1.690 2.143 3.050
3" .065" .083" .120" 2.037 2.566 3.691
3.5" .065" .083" .120" 2.385 3.029 4.332
4" .065" .083" .120" 2.732 3.472 4.973
4.5"   .083" .120"   3.915 5.841
5" .065" .083" .120"   4.359 6.254
6"   .083" .120"   5.245 7.536
8"   .083" .120"   7.400 10.77