ANSI Steel Pipes Schedule 80: Dimensions, Sizes, and Specifications

Internal and external diameters, areas, weights, volumes and number of threads for schedule 80 steel pipes based on ASTM A53 - Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.

Pipe Size (in)	External Diameter (in)	Internal Diameter (in)	Nominal Thickness (in)	External Transverse Areas (in²)	Internal Transverse Areas (in²)	Length of Pipe per sq. foot of External Surface (ft)	Length of Pipe per sq. foot of Internal Surface (ft)	Volume (ft³/ft)	Weight (lb/ft)	Weight (kg/m)	Number of Threads per inch of Screw
1/8	0.41	0.22	0.10	0.13	0.04	0.09	9.43	17.75	0.0003	0.31	0.47	27
¼	0.54	0.30	0.12	0.23	0.07	0.16	7.07	12.65	0.0005	0.54	0.80	18
3/8	0.68	0.42	0.13	0.36	0.14	0.22	5.66	9.03	0.0010	0.74	1.10	18
½	0.84	0.55	0.15	0.55	0.23	0.32	4.55	7.00	0.0016	1.00	1.49	14
¾	1.05	0.74	0.15	0.87	0.43	0.43	3.64	5.15	0.0030	1.47	2.19	14
1	1.32	0.96	0.18	1.36	0.72	0.64	2.90	4.00	0.0050	2.17	3.23	11 ½
1 ¼	1.66	1.28	0.19	2.16	1.28	0.88	2.30	2.99	0.0089	3.00	4.46	11 ½
1 ½	1.90	1.50	0.20	2.84	1.77	1.07	2.01	2.54	0.0123	3.65	5.43	11 ½
2	2.38	1.94	0.22	4.43	2.95	1.48	1.61	1.97	0.0205	5.02	7.47	11 ½
2 ½	2.88	2.32	0.28	6.49	4.24	2.25	1.33	1.65	0.0294	7.66	11.40	8
3	3.50	2.90	0.30	9.62	6.61	3.02	1.09	1.32	0.0459	10.30	15.33	8
3 ½	4.00	3.36	0.32	12.56	8.89	3.68	0.95	1.14	0.0617	12.50	18.60	8
4	4.50	3.83	0.34	15.90	11.50	4.41	0.85	1.00	0.08	14.90	22.17	8
5	5.56	4.81	0.38	24.30	18.19	6.11	0.69	0.79	0.1263	20.80	30.95	8
6	6.63	5.76	0.43	34.47	26.07	8.30	0.58	0.67	0.1810	28.60	42.56	8
8	8.63	7.63	0.50	58.42	45.66	12.76	0.44	0.50	0.3171	43.40	64.59	8
10	10.75	9.56	0.59	90.76	71.84	18.92	0.36	0.40	0.4989	64.40	95.84	8
12	12.75	11.38	0.69	127.64	101.64	26.00	0.30	0.34	0.7058	88.60	131.85	12
14	14.00	12.50	0.75	153.94	122.72	31.22	0.27	0.31	0.8522	107.00	159.23	12
16	16.00	14.31	0.84	201.05	160.92	40.13	0.24	0.26	1.1170	137.00	203.88	12
18	18.00	16.13	0.94	254.85	204.24	50.61	0.21	0.24	1.4180	171.00	254.48	12
20	20.00	17.94	1.03	314.15	252.72	61.43	0.19	0.21	1.7550	209.00	311.03	12
24	24.00	21.56	1.22	452.40	365.22	87.18	0.16	0.17	2.5360	297.00	441.99	12