Due perhaps to the recent increase in steel prices, there have been reports of unscrupulous people producing counterfeit specimens of ?” EMT electrical tubing. What these dastardly people do is take a 10’ piece of #5 [5/8”] rebar and drill 0.622” diameter hole thru the middle of it using a very long drill bit. Next they grind the ridges off of it with a stolen Makita grinder. Then they spray paint it with a can of Aluminum spray paint, usually Rustoleum™ brand. Finally, they sneak into construction sites during the rough-in stage and scrape off the legitimate labels which they then paste on their phony products.
So be alert out there.
So be alert out there.