Manufacturer in the USA is what the tag says.
The pipe is made of copper.
Thank you for contacting Cerro with your product inquiry. Ancient plumbing systems date back to 4,000 B.C., including the following : 1. Archaeologists discovered copper water pipes in the palace ruins of the Indus River Valley in India. (4,000 to 3,000 B.C.) 2. Egyptians developed copper pipes that were used to build elaborate bathrooms inside the pyramids and intricate irrigation and sewages systems. (2500 B.C.)
According to the ASTM standards, the tolerances for type L would be .0015 for drawn copper. The wall thickness tolerance is .005.
Thank you for your recent inquiry with The Home Depot. We only stock the 2' length online. However, this item is also available in select Home Depot stores as an in stock item. I believe the best advice would be to talk to one of our Plumbing Department professionals at your local Home Depot store. For any other questions, please visit your nearest local Home Depot store or call us at HomeDepot.com Customer Service 800-430-3376. Thank you for shopping Home Depot.