Tubing Gauge No. and Decimal Chart Gage No. Gage Decimal WEIGHT Lbs. Per Sq. Ft. Sheet STEEL 3 0.2391 10 4 0.2242 9.375 5 0.2092 8.75 6 0.1943 8.125 7 0.1793 7.5 8 0.1644 6.875 9 0.1495 6.25 10 0.1345 5.625 11 0.1196 5 12 0.1046 4.375 13 0.0897 3.75 14 0.0747 3.125 0 1 2 15 0.0673 2.813 16 0.0598 2.5 17 0.0538 2.25 18 0.0478 2 19 0.0418 1.75 20 0.0359 1.5 21 0.0329 1.375 22 0.0299 1.25 23 0.0269 1.125 24 0.0239 1 25 0.0209 0.875 26 0.0179 0.75 27 0.0164 0.688 28 0.0149 0.625 29 0.0135 0.563 30 0.012 0.5 31 0.0105 0.438 32 0.0097 0.406 33 0.009 0.375 34 0.0082 0.344 35 0.0075 0.313 36 0.0067 0.281 37 0.0064 0.266 38 0.006 0.25
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