Type M copper is typically used in hot water heating systems. Type L copper is used in domestic (drinking water} systems. Type K copper is the best and more costly to use in all applications because it has the thickest tube wall. In a freezing environment, Pex is the way to go! Also, type M is not code approved for anything but heating. Iam a plumber and never used Type M in 38 years. Iam not a fan
It is definitely more rigid but they are for 2 different purposes. EMT is used for electrical and copper is used for plumbing
check your local codes, most codes require schedule 80 black pipe for compressed air installations.
Depends on the footage price?
L is thicker but M is fine for residential use and cheaper.
Check your local codes, most codes require schedule 80 black pipe for compressed air installations. I have seen companies have to pull out entire air line installations because they used the wrong materials. This is actually a safety issue, use caution if not following code. I serviced and installed air compressors and and compressed air systems for several years.
No, you need to use black screw pipe for gas.
Get the center support.
No. A 10’ length is approximately 3.5 pounds.
There's a factory in Mordor that does great work, but the conditions for the workers is pretty terrible. If you have a gold ring that you can donate, maybe this can be fixed? Actually, a lot of copper comes from right here in Arizona. This pipe is probably US made.