Is copper pipe #1 or #2?

Copper pipes are typically classified into different grades, including #1 and #2. However, it's important to note that the specific grading system for copper pipes may vary depending on the context or industry. In the context of the scrap metal industry, where copper is commonly recycled, #1 copper refers to clean, unalloyed, and uncoated copper piping with no solder or fittings attached. It is considered to be of higher quality and purity. #2 copper, on the other hand, includes copper piping that may have some attachments, such as solder or fittings, or may have been subject to some contamination or oxidation.