NPS Nominal Pipe Size / Nominal Bore

Data provided with support of ASTM R0033

As per ANSI B36.10M & ASME B36.19M for Stainless Steel & Nickel Alloys Seamless & Welded Pipe

NB	DN	OD	5S/5	10S	10	20	30	40S	S	40	60	80S	XS	80	100	120	140	160	XXS
1/8	6	10.3	-	1.24	1.24	-	1.45	1.73	1.73	1.73	-	2.41	2.41	2.41	-	-	-	-	-
1/4	8	13.7	-	1.65	1.65	-	1.85	2.24	2.24	2.24	-	3.02	3.02	3.02	-	-	-	-	-
3/8	10	17.1	-	1.65	1.65	-	1.85	2.31	2.31	2.31	-	3.20	3.20	3.20	-	-	-	-	-
1/2	15	21.3	1.65	2.11	2.11	-	2.41	2.77	2.77	2.77	-	3.73	3.73	3.73	-	-	-	4.78	7.47
3/4	20	26.7	1.65	2.11	2.11	-	2.41	2.87	2.87	2.87	-	3.91	3.91	3.91	-	-	-	5.56	7.82
1	25	33.4	1.65	2.77	2.77	-	2.90	3.38	3.38	3.38	-	4.55	4.55	4.55	-	-	-	6.35	9.09
1 1/4	32	42.2	1.65	2.77	2.77	-	2.97	3.56	3.56	3.56	-	4.85	4.85	4.85	-	-	-	6.35	9.70
1 1/2	40	48.3	1.65	2.77	2.77	-	3.18	3.68	3.68	3.68	-	5.08	5.08	5.08	-	-	-	7.14	10.15
2	50	60.3	1.65	2.77	2.77	-	3.18	3.91	3.91	3.91	-	5.54	5.54	5.54	-	-	-	8.74	11.07
2 1/2	65	73.0	2.11	3.05	3.05	-	4.78	5.16	5.16	5.16	-	7.01	7.01	7.01	-	-	-	9.53	14.02
3	80	88.9	2.11	3.05	3.05	-	4.78	5.49	5.49	5.49	-	7.62	7.62	7.62	-	-	-	11.13	15.24
3 1/2	90	101.6	2.11	3.05	3.05	-	4.78	5.74	5.74	5.74	-	8.08	8.08	8.08	-	-	-	-	-
4	100	114.3	2.11	3.05	3.05	-	4.78	6.02	6.02	6.02	-	8.56	8.56	8.56	-	11.13	-	13.49	17.12
5	125	141.3	2.77	3.40	3.40	-	-	6.55	6.55	6.55	-	9.53	9.53	9.53	-	12.70	-	15.88	19.05
6	150	168.3	2.77	3.40	3.40	-	-	7.11	7.11	7.11	-	10.97	10.97	10.97	-	14.27	-	18.26	21.95
8	200	219.1	2.77	3.76	3.76	6.35	7.04	8.18	8.18	8.18	10.31	12.70	12.70	12.70	15.09	18.26	20.62	23.01	22.23
10	250	273.0	3.40	4.19	4.19	6.35	7.80	9.27	9.27	9.27	12.70	12.70	12.70	15.09	18.26	21.44	25.40	28.58	25.40
12	300	323.8	3.96	4.57	4.57	6.35	8.38	9.53	9.53	10.31	14.27	12.70	12.70	17.48	21.44	25.40	28.58	33.32	25.40
14	350	355.6	3.96	4.78	6.35	7.92	9.53	9.53	9.53	11.13	15.09	12.70	12.70	19.05	23.83	27.79	31.75	35.71	-
16	400	406.4	4.19	4.78	6.35	7.92	9.53	9.53	9.53	12.70	16.66	12.70	12.70	21.44	26.19	30.96	36.53	40.49	-
18	450	457.0	4.19	4.78	6.35	7.92	11.13	9.53	9.53	14.27	19.05	12.70	12.70	23.83	29.36	34.93	39.67	45.24	-
20	500	508.0	4.78	5.54	6.35	9.53	12.70	9.53	9.53	15.09	20.62	12.70	12.70	26.19	32.54	38.10	44.45	50.01	-
22	550	559.0	4.78	5.54	6.35	9.53	12.70	-	9.53	-	22.23	-	12.70	28.58	34.93	41.28	47.63	53.98	-
24	600	610.0	5.54	6.35	6.35	9.53	14.27	9.53	9.53	17.48	24.61	12.70	12.70	30.96	38.89	46.02	52.37	59.54	-
26	650	660.0	-	-	7.92	12.70	-	-	9.53	-	-	-	12.70	-	-	-	-	-	-
28	700	711.0	-	-	7.92	12.70	15.88	-	9.53	-	-	-	12.70	-	-	-	-	-	-
30	750	762.0	6.35	7.92	7.92	12.70	15.88	-	9.53	-	-	-	12.70	-	-	-	-	-	-
32	800	813.0	-	-	7.92	12.70	15.88	-	9.53	17.48	-	-	12.70	-	-	-	-	-	-
34	850	864.0	-	-	7.92	12.70	15.88	-	9.53	17.48	-	-	12.70	-	-	-	-	-	-
36	900	914.0	-	-	7.92	12.70	15.88	-	9.53	19.05	-	-	12.70	-	-	-	-	-	-
38	950	965.0	-	-	-	-	-	-	9.53	-	-	-	12.7	-	-	-	-	-	-
40	1000	1016.0	-	-	-	-	-	-	9.53	-	-	-	12.7	-	-	-	-	-	-
42	1050	1067.0	-	-	-	-	-	-	9.53	-	-	-	12.7	-	-	-	-	-	-
44	1100	1118.0	-	-	-	-	-	-	9.53	-	-	-	12.7	-	-	-	-	-	-
46	1150	1168.0	-	-	-	-	-	-	9.53	-	-	-	12.7	-	-	-	-	-	-
48	1200	1219.0	-	-	-	-	-	-	9.53	-	-	-	12.7	-	-	-	-	-	-
52	1300	1321.0	-	-	-	-	-	-	9.53	-	-	-	12.7	-	-	-	-	-	-
56	1400	1422.0	-	-	-	-	-	-	9.53	-	-	-	12.7	-	-	-	-	-	-
60	1500	1524.0	-	-	-	-	-	-	9.53	-	-	-	12.7	-	-	-	-	-	-
64	1600	1626.0	-	-	-	-	-	-	9.53	-	-	-	12.7	-	-	-	-	-	-

NB
1/8
1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
52
56
60
64

NB

NB	DN	OD	5S/5	10S	10	20	30	40S	S	40	60	80S	XS	80	100	120	140	160	XXS

NPS / Nominal Bore