All copper tube supplied is manufactured to meet the requirements of specifications established by ASTM. All tube supplied to these ASTM standards is a minimum of 99.9% pure copper. The table below identifies the six standard types of copper tube and their most common applications.
Download the PDF of this product brief: Types of Copper Tube
| Tube Type | Standard | Application | Nominal Size | Drawn (Hard) | Annealed (Soft) |
|---|---|---|---|---|---|
| Type K & L | ASTM B88 | Domestic Water, Fire Protection, Fuel/Fuel Oil, HVAC, Compressed Air, Natural Gas, LP Gas, Vacuum | 1/4" to 10" | 20' | 20' |
| Type K & L | ASTM B88 | Domestic Water, Fire Protection, Fuel/Fuel Oil, HVAC, Compressed Air, Natural Gas, LP Gas, Vacuum | 12" | 18' | 18' |
| Type M | ASTM B88 | Domestic Water, Fire Protection, Fuel/Fuel Oil, HVAC, Compressed Air, Vacuum | 1/4" to 12" | 20' | |
| DWV | ASTM B306 | Drain, Waste, Vent, HVAC, Solar | 1-1/4" to 8" | 20' | |
| MED | ASTM B819 | Medical Gas, Compressed Medical Air, Vacuum | 1-1/4" to 8" | 20' | |
| ACR | ASTM B280 | Air Conditioning, Refrigeration, Natural Gas, LP Gas, Compressed Air | 1-1/4" to 8" | 20' |
| Tube Type | Standard | Application | Nominal Size | Annealed (Soft) |
|---|---|---|---|---|
| Type K & L | ASTM B88 | Domestic Water, Fire Protection, Fuel/Fuel Oil, HVAC, Compressed Air, Natural Gas, LP Gas, Vacuum | 1/4" to 1" | 60' |
| Type K & L | ASTM B88 | Domestic Water, Fire Protection, Fuel/Fuel Oil, HVAC, Compressed Air, Natural Gas, LP Gas, Vacuum | 1/4" to 1" | 100' |
| Type K & L | ASTM B88 | Domestic Water, Fire Protection, Fuel/Fuel Oil, HVAC, Compressed Air, Natural Gas, LP Gas, Vacuum | 1-1/4" to 1-1/2" | 60' |
| Type K & L | ASTM B88 | Domestic Water, Fire Protection, Fuel/Fuel Oil, HVAC, Compressed Air, Natural Gas, LP Gas, Vacuum | 2" | 40' |
Types K, L, M DWV and MED tube are all designated by ASTM standard sizes, with actual outside diameter always 1/8" larger than the standard size designation. Each type represents a different wall thickness. Type K tube is has thicker walls than type L, and type L walls are thicker than type M for any given diameter. All inside diameters depend on the tube size and wall thickness. Type ACR tube is designated by actual outside diameter.