Any Size Copper Pipe/Tube 1/4″- 6″ Inch Diameter x 1′ foot Length or More Type L
Copper Pipe/Tube Type L. Nominal Size (in.). O.D. Avg.I.D. Wall Thickness. Type K=Heavy wall (underground). DWV= Thin wall, drain, vent, waste (not for pressure). “Know your copper” the most common are.