Standard Copper Tubing Dimensional Reference

Petersen Does Not Sell Copper Tubing

Select Mechanical or Inflatable Pipe Plugs based on the below tubing ID (Internal Diameter) and along with the pressure to be blocked

Copper pipes are commonly used in plumbing, HVAC, and industrial applications. They are classified by types (K, L, M, DWV) based on wall thickness and intended use. This guide provides a detailed size chart covering nominal pipe size (NPS), outside diameter (OD), inside diameter (ID), and wall thickness for different copper tubing types.

		Type
COPPER PIPE I.D. & WALL THICKNESS CHART
Nominal Pipe Size inches	O.D.	I.D.				Wall Thickness
		K*	L**	M***	DWV****	K	L	M	DWV
1/4	0.375	0.305	0.315	-	-	0.035	0.030	-	-
3/8	0.500	0.402	0.430	0.450	-	0.049	0.035	0.025	-
1/2	0.625	0.527	0.545	0.569	-	0.049	0.040	0.028	-
5/8	0.750	0.652	0.666	-	-	0.049	0.042	-	-
3/4	0.875	0.745	0.785	0.811	-	0.065	0.045	0.032	-
1	1.125	0.995	1.025	1.055	-	0.065	0.050	0.035	-
1-1/4	1.375	1.245	1.265	1.291	1.295	0.065	0.055	0.042	0.040
1-1/2	1.625	1.481	1.505	1.527	1.541	0.072	0.060	0.049	0.042
2	2.125	1.959	1.985	2.009	2.041	0.083	0.070	0.058	0.042
2-1/2	2.625	2.435	2.465	2.495	-	0.095	0.080	0.065	-
3	3.125	2.907	2.945	2.981	3.030	0.109	0.090	0.072	0.045
3.5	3.625	3.385	3.425	3.459	-	.120	.100	.083	-
4	4.125	3.857	3.897	3.935	4.009	.134	.114	.095	.058
5	5.125	4.805	4.875	4.907	4.981	.160	.125	.109	.072
6	6.125	5.741	5.845	5.881	5.959	.192	.140	.122	.083
8	8.125	7.583	7.725	7.785	-	.271	.200	.170	-

*K, thick walled, underground residential, commercial and industrial uses.

**L, medium walled, residential and commercial uses

***M, thin walled, above ground residential and light commercial uses.

****DWV, Drain/Waste/Vent, non-pressurized

The content in this website may be used but with no warranty or liability. These copper tubing sizes and dimensions are believed to be correct but should always be double checked with alternative sources. Strictly adhere to and follow all applicable national and local regulations and practices.

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Standard Copper Tubing Dimensional Reference

Petersen Does Not Sell Copper Tubing

Select Mechanical or Inflatable Pipe Plugs based on the below tubing ID (Internal Diameter) and along with the pressure to be blocked

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