ICS Industries - 3/8" OD x 50 Feet Copper Coil Air Conditioning and Refrigeration Grade Seamless Soft Copper Coil Performance to ASTM Standard B-280 Sealed and Capped .375 OD

While this is rated for aircon, it was used for natural gas after the regulator. It was slightly thicker than the OEM tubing already installed for the rest of the appliances (trailer, adding a heater). In a good way. This is not cheap tubing etc. It is exactly what it says it is, and at $57 for 50ft, a good value given 2025 prices. Just bend it (gently) by hand to get it to straighten or put the necessary curves in it. Already had a standard flaring kit.

Used this .375 diameter line as the high side/liquid line on our HVAC unit. Installed easily...brazed both ends to evaporator & condenser manifolds respectively. Purged, vacuumed & filled system with refrigerant - no issues at all. Just a good ol' 50 foot piece of copper tubing. Seemed to be very high quality, as it did not kink and was not oxidized when I opened the shipping package. Both ends were plugged when I received it - no contaminants inside tubing. Just what we needed - very good price on this product as well!

I purchased 38 copper, I was making some heating coils to be submerged in a hot water tank. The quality was excellent for the price would buy again in a heartbeat.

Great deal on the copper tubing. Quality tubing at an affordable price.

good product and the shipping was quickly

Copper tubing came in fine shape. Used it all winter on my trailer connection

It is thin walled, so you have to be very careful when bending. I made larger radius bends over a welding tank to avoiding kinking. A tubing bender will work if you go slow and carefully.

Used for oil burner oil lines, no issues