Square tube gauge thickness chart. Structural Tubing: 2" and over 11 ga wall thickness - ASTM A-500 Grade B. 106 5. 032 5. D. 060 5. 774 4. Everything you need to know to specify OEM metal and types of metal tubing for fabrication, plus our downloadable free Standard Tube Sizes Chart! STEEL TUBING DIMENSIONS & WEIGHT PER FOOT. 570 4. The wall thickness (WT) of tubing can also be measured by the standard gauge from 0 (heaviest) to 24 (lightest) which correspond to a range of wall thicknesses. 049 inch wall thickness Weight - Measured in pounds per foot; indicates heaviness of a tube with that specific outer dimension and gauge. y6of 4hbs zbwi9ok g91 n1za ynrk5 ubvw w3lcnjq oeyx6 cu38wb