Nominal Tube
Dimensions Chart
(BWG)
The Birmingham Wire Gauge (BWG) Chart is a standardized reference system used to determine the wall thickness of tubes, pipes, and wire diameters in industrial applications. Crucial for manufacturing, heat exchangers, and piping systems, it translates standard gauge numbers into precise decimal inch and metric millimeter dimensions. On this scale, smaller gauge numbers indicate thicker walls, while higher numbers represent progressively thinner dimensions.
NOTE: USA Industries DOES NOT sell tubes (carbon or stainless steels, copper, titanium, etc.). We do, however, sell tubing products (tube plugs, heat exchanger tools and tooling, etc.).
Why USA Industries?
40+ years of manufacturing excellence and innovation
Fastest Turnaround
Same-day shipping available on stock items. Custom orders in days, not weeks.
Manufactured In-House
U.S. produced steel, PMI verified, QC certified.
ISO 9001:2015 Certified
Quality-driven manufacturing process ensures excellence.
Engineering Innovation
Precision-Engineered Industrial Solutions — Delivered Fast!
100% USA Materials
All raw materials sourced from American mills.