Pipe schedule chart and weight calculator (ASME B36.10M)

Weight calculator

Pick a size and schedule, or enter any OD × WT.

Plain-end weight formula (ASME B36.10M)

W = (OD − WT) × WT × 0.0246615 kg/m

The calculator needs JavaScript. The table below lists every standard size.

Pipe schedule and weight chart

Schedule	Wall thickness mm	Wall thickness in	Weight kg/m	Weight lb/ft
NPS ⁦⅛⁩ (DN 6), OD ⁦10.3⁩ mm (⁦0.405⁩ in)
SCH 10	1.24	0.049	0.28	0.19
SCH 40	1.73	0.068	0.37	0.25
STD	1.73	0.068	0.37	0.25
SCH 80	2.41	0.095	0.47	0.32
XS	2.41	0.095	0.47	0.32
NPS ⁦¼⁩ (DN 8), OD ⁦13.7⁩ mm (⁦0.540⁩ in)
SCH 10	1.65	0.065	0.49	0.33
SCH 40	2.24	0.088	0.63	0.42
STD	2.24	0.088	0.63	0.42
SCH 80	3.02	0.119	0.80	0.54
XS	3.02	0.119	0.80	0.54
NPS ⁦⅜⁩ (DN 10), OD ⁦17.1⁩ mm (⁦0.675⁩ in)
SCH 10	1.65	0.065	0.63	0.42
SCH 40	2.31	0.091	0.84	0.56
STD	2.31	0.091	0.84	0.56
SCH 80	3.20	0.126	1.10	0.74
XS	3.20	0.126	1.10	0.74
NPS ⁦½⁩ (DN 15), OD ⁦21.3⁩ mm (⁦0.840⁩ in)
SCH 5	1.65	0.065	0.80	0.54
SCH 10	2.11	0.083	1.00	0.67
SCH 40	2.77	0.109	1.27	0.85
STD	2.77	0.109	1.27	0.85
SCH 80	3.73	0.147	1.62	1.09
XS	3.73	0.147	1.62	1.09
SCH 160	4.78	0.188	1.95	1.31
XXS	7.47	0.294	2.55	1.71
NPS ⁦¾⁩ (DN 20), OD ⁦26.7⁩ mm (⁦1.050⁩ in)
SCH 5	1.65	0.065	1.02	0.69
SCH 10	2.11	0.083	1.28	0.86
SCH 40	2.87	0.113	1.69	1.14
STD	2.87	0.113	1.69	1.14
SCH 80	3.91	0.154	2.20	1.48
XS	3.91	0.154	2.20	1.48
SCH 160	5.56	0.219	2.90	1.95
XXS	7.82	0.308	3.64	2.45
NPS ⁦1⁩ (DN 25), OD ⁦33.4⁩ mm (⁦1.315⁩ in)
SCH 5	1.65	0.065	1.29	0.87
SCH 10	2.77	0.109	2.09	1.40
SCH 40	3.38	0.133	2.50	1.68
STD	3.38	0.133	2.50	1.68
SCH 80	4.55	0.179	3.24	2.18
XS	4.55	0.179	3.24	2.18
SCH 160	6.35	0.250	4.24	2.85
XXS	9.09	0.358	5.45	3.66
NPS ⁦1¼⁩ (DN 32), OD ⁦42.2⁩ mm (⁦1.660⁩ in)
SCH 5	1.65	0.065	1.65	1.11
SCH 10	2.77	0.109	2.69	1.81
SCH 40	3.56	0.140	3.39	2.28
STD	3.56	0.140	3.39	2.28
SCH 80	4.85	0.191	4.47	3.00
XS	4.85	0.191	4.47	3.00
SCH 160	6.35	0.250	5.61	3.77
XXS	9.70	0.382	7.77	5.22
NPS ⁦1½⁩ (DN 40), OD ⁦48.3⁩ mm (⁦1.900⁩ in)
SCH 5	1.65	0.065	1.90	1.28
SCH 10	2.77	0.109	3.11	2.09
SCH 40	3.68	0.145	4.05	2.72
STD	3.68	0.145	4.05	2.72
SCH 80	5.08	0.200	5.41	3.64
XS	5.08	0.200	5.41	3.64
SCH 160	7.14	0.281	7.25	4.87
XXS	10.15	0.400	9.55	6.42
NPS ⁦2⁩ (DN 50), OD ⁦60.3⁩ mm (⁦2.375⁩ in)
SCH 5	1.65	0.065	2.39	1.61
SCH 10	2.77	0.109	3.93	2.64
SCH 40	3.91	0.154	5.44	3.66
STD	3.91	0.154	5.44	3.66
SCH 80	5.54	0.218	7.48	5.03
XS	5.54	0.218	7.48	5.03
SCH 160	8.74	0.344	11.11	7.47
XXS	11.07	0.436	13.44	9.03
NPS ⁦2½⁩ (DN 65), OD ⁦73.0⁩ mm (⁦2.875⁩ in)
SCH 5	2.11	0.083	3.69	2.48
SCH 10	3.05	0.120	5.26	3.53
SCH 40	5.16	0.203	8.63	5.80
STD	5.16	0.203	8.63	5.80
SCH 80	7.01	0.276	11.41	7.67
XS	7.01	0.276	11.41	7.67
SCH 160	9.53	0.375	14.92	10.03
XXS	14.02	0.552	20.39	13.70
NPS ⁦3⁩ (DN 80), OD ⁦88.9⁩ mm (⁦3.500⁩ in)
SCH 5	2.11	0.083	4.52	3.04
SCH 10	3.05	0.120	6.46	4.34
SCH 40	5.49	0.216	11.29	7.59
STD	5.49	0.216	11.29	7.59
SCH 80	7.62	0.300	15.27	10.26
XS	7.62	0.300	15.27	10.26
SCH 160	11.13	0.438	21.35	14.35
XXS	15.24	0.600	27.68	18.60
NPS ⁦3½⁩ (DN 90), OD ⁦101.6⁩ mm (⁦4.000⁩ in)
SCH 5	2.11	0.083	5.18	3.48
SCH 10	3.05	0.120	7.41	4.98
SCH 40	5.74	0.226	13.57	9.12
STD	5.74	0.226	13.57	9.12
SCH 80	8.08	0.318	18.64	12.53
XS	8.08	0.318	18.64	12.53
XXS	16.15	0.636	34.03	22.87
NPS ⁦4⁩ (DN 100), OD ⁦114.3⁩ mm (⁦4.500⁩ in)
SCH 5	2.11	0.083	5.84	3.92
SCH 10	3.05	0.120	8.37	5.62
SCH 40	6.02	0.237	16.08	10.81
STD	6.02	0.237	16.08	10.81
SCH 80	8.56	0.337	22.32	15.00
XS	8.56	0.337	22.32	15.00
SCH 120	11.13	0.438	28.32	19.03
SCH 140	13.49	0.531	33.54	22.54
SCH 160	17.12	0.674	41.03	27.57
XXS	17.12	0.674	41.03	27.57
NPS ⁦5⁩ (DN 125), OD ⁦141.3⁩ mm (⁦5.563⁩ in)
SCH 5	2.77	0.109	9.46	6.36
SCH 10	3.40	0.134	11.56	7.77
SCH 40	6.55	0.258	21.77	14.63
STD	6.55	0.258	21.77	14.63
SCH 80	9.53	0.375	30.97	20.81
XS	9.53	0.375	30.97	20.81
SCH 120	12.70	0.500	40.28	27.07
SCH 140	15.88	0.625	49.12	33.01
SCH 160	19.05	0.750	57.43	38.59
XXS	19.05	0.750	57.43	38.59
NPS ⁦6⁩ (DN 150), OD ⁦168.3⁩ mm (⁦6.625⁩ in)
SCH 5	2.77	0.109	11.31	7.60
SCH 10	3.40	0.134	13.83	9.29
SCH 40	7.11	0.280	28.26	18.99
STD	7.11	0.280	28.26	18.99
SCH 80	10.97	0.432	42.56	28.60
XS	10.97	0.432	42.56	28.60
SCH 100	12.70	0.500	48.73	32.75
SCH 120	14.27	0.562	54.21	36.43
SCH 160	18.26	0.719	67.57	45.40
XXS	21.95	0.864	79.22	53.23
NPS ⁦8⁩ (DN 200), OD ⁦219.1⁩ mm (⁦8.625⁩ in)
SCH 5	2.77	0.109	14.78	9.93
SCH 10	3.76	0.148	19.97	13.42
SCH 20	6.35	0.250	33.32	22.39
SCH 30	7.04	0.277	36.82	24.74
SCH 40	8.18	0.322	42.55	28.59
STD	8.18	0.322	42.55	28.59
SCH 60	10.31	0.406	53.09	35.67
SCH 80	12.70	0.500	64.64	43.44
XS	12.70	0.500	64.64	43.44
SCH 100	15.09	0.594	75.92	51.02
SCH 120	18.26	0.719	90.44	60.77
SCH 140	20.62	0.812	100.93	67.82
SCH 160	23.01	0.906	111.27	74.77
XXS	22.23	0.875	107.93	72.53
NPS ⁦10⁩ (DN 250), OD ⁦273.1⁩ mm (⁦10.750⁩ in)
SCH 5	3.40	0.134	22.61	15.19
SCH 10	4.19	0.165	27.79	18.67
SCH 20	6.35	0.250	41.77	28.07
SCH 30	7.80	0.307	51.03	34.29
SCH 40	9.27	0.365	60.31	40.53
STD	9.27	0.365	60.31	40.53
SCH 60	12.70	0.500	81.56	54.81
SCH 80	15.09	0.594	96.02	64.52
XS	12.70	0.500	81.56	54.81
SCH 100	18.26	0.719	114.76	77.12
SCH 120	21.44	0.844	133.06	89.41
SCH 140	25.40	1.000	155.16	104.26
SCH 160	28.58	1.125	172.34	115.81
XXS	25.40	1.000	155.16	104.26
NPS ⁦12⁩ (DN 300), OD ⁦323.9⁩ mm (⁦12.750⁩ in)
SCH 5	3.96	0.156	31.25	21.00
SCH 10	4.57	0.180	35.99	24.18
SCH 20	6.35	0.250	49.73	33.42
SCH 30	8.38	0.330	65.21	43.82
SCH 40	10.31	0.406	79.73	53.58
STD	9.53	0.375	73.88	49.65
SCH 60	14.27	0.562	108.96	73.22
SCH 80	17.48	0.688	132.09	88.76
XS	12.70	0.500	97.47	65.50
SCH 100	21.44	0.844	159.92	107.46
SCH 120	25.40	1.000	186.98	125.64
SCH 140	28.58	1.125	208.15	139.87
SCH 160	33.32	1.312	238.78	160.45
XXS	25.40	1.000	186.98	125.64
NPS ⁦14⁩ (DN 350), OD ⁦355.6⁩ mm (⁦14.000⁩ in)
SCH 5	3.96	0.156	34.34	23.08
SCH 10	6.35	0.250	54.69	36.75
SCH 20	7.92	0.312	67.91	45.63
SCH 30	9.53	0.375	81.33	54.65
SCH 40	11.13	0.438	94.55	63.53
STD	9.53	0.375	81.33	54.65
SCH 60	15.09	0.594	126.72	85.15
SCH 80	19.05	0.750	158.11	106.25
XS	12.70	0.500	107.40	72.17
SCH 100	23.83	0.938	194.98	131.02
SCH 120	27.79	1.094	224.66	150.96
SCH 140	31.75	1.250	253.58	170.40
SCH 160	35.71	1.406	281.72	189.31
NPS ⁦16⁩ (DN 400), OD ⁦406.4⁩ mm (⁦16.000⁩ in)
SCH 5	4.19	0.165	41.56	27.93
SCH 10	6.35	0.250	62.65	42.10
SCH 20	7.92	0.312	77.83	52.30
SCH 30	9.53	0.375	93.27	62.67
SCH 40	12.70	0.500	123.31	82.86
STD	9.53	0.375	93.27	62.67
SCH 60	16.66	0.656	160.13	107.60
SCH 80	21.44	0.844	203.54	136.77
XS	12.70	0.500	123.31	82.86
SCH 100	26.19	1.031	245.57	165.02
SCH 120	30.96	1.219	286.66	192.63
SCH 140	36.53	1.438	333.21	223.91
SCH 160	40.49	1.594	365.38	245.52
NPS ⁦18⁩ (DN 450), OD ⁦457.2⁩ mm (⁦18.000⁩ in)
SCH 5	4.19	0.165	46.81	31.45
SCH 10	6.35	0.250	70.60	47.44
SCH 20	7.92	0.312	87.75	58.97
SCH 30	11.13	0.438	122.44	82.28
SCH 40	14.27	0.562	155.88	104.75
STD	9.53	0.375	105.21	70.70
SCH 60	19.05	0.750	205.84	138.32
SCH 80	23.83	0.938	254.68	171.14
XS	12.70	0.500	139.22	93.55
SCH 100	29.36	1.156	309.78	208.16
SCH 120	34.93	1.375	363.75	244.43
SCH 140	39.67	1.562	408.48	274.49
SCH 160	45.24	1.781	459.62	308.85
NPS ⁦20⁩ (DN 500), OD ⁦508.0⁩ mm (⁦20.000⁩ in)
SCH 10	6.35	0.250	78.56	52.79
SCH 20	9.53	0.375	117.15	78.72
SCH 30	12.70	0.500	155.13	104.24
SCH 40	15.09	0.594	183.43	123.26
STD	9.53	0.375	117.15	78.72
SCH 60	20.62	0.812	247.84	166.54
SCH 80	26.19	1.031	311.19	209.11
XS	12.70	0.500	155.13	104.24
SCH 100	32.54	1.281	381.55	256.39
SCH 120	38.10	1.500	441.52	296.69
SCH 140	44.45	1.750	508.15	341.46
SCH 160	50.01	1.969	564.85	379.56
NPS ⁦22⁩ (DN 550), OD ⁦558.8⁩ mm (⁦22.000⁩ in)
SCH 10	6.35	0.250	86.51	58.13
SCH 20	9.53	0.375	129.09	86.74
SCH 30	12.70	0.500	171.04	114.93
STD	9.53	0.375	129.09	86.74
SCH 60	22.23	0.875	294.16	197.67
SCH 80	28.58	1.125	373.71	251.12
XS	12.70	0.500	171.04	114.93
SCH 100	34.93	1.375	451.28	303.25
SCH 120	41.28	1.625	526.85	354.03
SCH 140	47.63	1.875	600.43	403.47
SCH 160	53.98	2.125	672.03	451.58
NPS ⁦24⁩ (DN 600), OD ⁦609.6⁩ mm (⁦24.000⁩ in)
SCH 10	6.35	0.250	94.47	63.48
SCH 20	9.53	0.375	141.03	94.77
SCH 30	14.27	0.562	209.51	140.78
SCH 40	17.48	0.688	255.25	171.52
STD	9.53	0.375	141.03	94.77
SCH 60	24.61	0.969	355.04	238.58
SCH 80	30.96	1.219	441.80	296.88
XS	12.70	0.500	186.95	125.62
SCH 100	38.89	1.531	547.36	367.81
SCH 120	46.02	1.812	639.62	429.80
SCH 140	52.37	2.062	719.68	483.60
SCH 160	59.54	2.344	807.68	542.74

ASME B36.10M · W = (OD − WT) × WT × 0.0246615

How to read the chart

NPS (nominal pipe size) names the size in inches; DN is the metric equivalent. The outside diameter is fixed for each NPS, whatever the schedule.
The schedule (SCH 10, 40, 80 …) sets the wall thickness. STD, XS and XXS are older weight classes: STD equals SCH 40 up to NPS 10, and is 9.53 mm from NPS 12 upwards.
Weights are plain-end weights calculated with the ASME B36.10M formula, W = (OD − WT) × WT × 0.0246615 kg/m. Printed tables round some values differently by ±0.01 kg/m.

Weight per bundle

Multiply the weight per metre by the length of each pipe and the number of pipes. For a bundle of 61 pipes, NPS 1½ SCH 40 (48.3 × 3.68 mm), 6 m long: 4.05 kg/m × 6 m × 61 = 1,482 kg, which is the weight printed on that bundle’s tag.

Tubes and other standards

Boiler and heat-exchanger tubes (ASTM A179, A192, GB/T 3087) and EN or GOST pipe are sized by outside diameter × wall thickness rather than NPS and schedule. Use the calculator with your OD and wall thickness.

Worked example

Check a real bundle tag

Our tags print the size, piece count and weight. With the formula you can check any of them in seconds.

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Manis Steel bundle tag listing ASTM A106/A53 Grade B, 48.3 × 3.68 × 6000 mm, heat 451254, 61 pieces, 1,482 kg

ASTM A106/A53 Gr.B · 48.3 × 3.68 × 6000 mm · Heat 451254 · 61 pcs · 1482 kg

(48.3 − 3.68) × 3.68 × 0.0246615 = 4.05 kg/m

4.05 kg/m × 6 m × 61 = 1,482 kg

1482 kg · Δ 0 kg