The inside diameter of a tube, pipe, or coil. It is the length of a straight line passing through the center of the opening. Specified in inches and fractions of an inch; or inches and decimals of an inch. Also called inner diameter.
The Fabricator Blog
Stop to notice the technology - by Dan Davis Keeping your nose to the grindstone could prevent you from noticing the rapid changes occurring in the world around you.
North America's leading magazine for the metal forming and fabricating industry, delivering news, technical articles, and case histories. Print subscriptions are free to qualified persons in North America involved in metal forming and fabricating.
TheFabricator.com provides metal fabrication professionals with market news, the industry's best articles, product news, and conference information from the Fabricators & Manufacturers Association, Intl.