Pipe Schedule Charts for CS and SS Pipe (Free Pocket Chart)

A pipe schedule chart is used to verify the dimension of the carbon steel and stainless steel pipe used in process industries. These charts covered sizes and schedules that give you the thickness of the pipe. ASME B36.10 and ASME B36.19 covered the Carbon steel and Stainless steel pipe dimensions, respectively. But do you know what the Pipe Schedule is?

What is Pipe Schedule?

The pipe schedule is the way pipe wall thickness is mentioned. To simplify the ordering of the pipe ASME committee has developed Schedule Number, which is based on modified Barlow’s wall thickness formula.

Definition of Schedule Number: The schedule number indicates an approximate value of 1000 x P/S where P is the service pressure and S is the allowable stress, expressed in pounds per square inch.

You can see the pipe schedule calculation formula below;

Schedule number = P/S

P is the service pressure in (psi)
S is the allowable stress in (psi)

So, what does schedule 40 means?

Schedule 40 is nothing but a pipe thickness designator. In simple words, you can say that for a given material, schedule 40 pipes can withstand a certain amount of pressure.

Pipe Schedule Chart for Carbon Steel Pipe in Inches

Schedule 5, Schedule 10 and Schedule 30

Nominal Pipe Schedule Chart for Sch5, 10 and 30 in Inches
Nominal Pipe Size in Inch	OD in Inch	5	10	20	30
1/8	0.405		0.049
1/4	0.54		0.065
3/8	0.675		0.065		0.073
1/2	0.84	0.065	0.083		0.095
3/4	1.05	0.065	0.083		0.095
1	1.315	0.065	0.109		0.114
1 1/4	1.66	0.065	0.109		0.117
1 1/2	1.9	0.065	0.109		0.125
2	2.375	0.065	0.109		0.125
2 1/2	2.875	0.083	0.12		0.188
3	3.5	0.083	0.12		0.188
3 1/2	4	0.083	0.12		0.188
4	4.5	0.083	0.12		0.188
5	5.563	0.109	0.134
6	6.625	0.109	0.134
8	8.625	0.109	0.148	0.25	0.277
10	10.75	0.134	0.165	0.25	0.307
12	12.75	0.156	0.18	0.25	0.33
14	14	0.156	0.25	0.312	0.375
16	16	0.165	0.25	0.312	0.375
18	18	0.165	0.25	0.312	0.438
20	20	0.188	0.25	0.375	0.5
22	22	0.188	0.25	0.375	0.5
24	24	0.218	0.25	0.375	0.562
26	26		0.312	0.5
28	28		0.312	0.5	0.625
30	30	0.25	0.312	0.5	0.625
32	32		0.312	0.5	0.625
34	34		0.312	0.5	0.625
36	36		0.312	0.5	0.625
ASME B36.10M-2015: Welded and Seamless Wrought Steel Pipe
Don’t get confused between 3 1/2 inch nominal with 3.5 inch OD, 4″ nominal with 4.000″ OD

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Schedule 40, Schedule STD, Schedule 60, Schedule 80, and Schedule XS

Nominal Pipe Schedule Chart for Sch 40, STD, 60, 80 & Xs in Inches
Nominal Pipe Size in Inch	OD in Inch	40	Std	60	80	XS
1/8	0.405	0.068	0.068		0.095	0.095
1/4	0.54	0.088	0.088		0.119	0.119
3/8	0.675	0.091	0.091		0.126	0.126
1/2	0.84	0.109	0.109		0.147	0.147
3/4	1.05	0.113	0.113		0.154	0.154
1	1.315	0.133	0.133		0.179	0.179
1 1/4	1.66	0.14	0.14		0.191	0.191
1 1/2	1.9	0.145	0.145		0.2	0.2
2	2.375	0.154	0.154		0.218	0.218
2 1/2	2.875	0.203	0.203		0.276	0.276
3	3.5	0.216	0.216		0.3	0.3
3 1/2	4	0.226	0.226		0.318	0.318
4	4.5	0.237	0.237		0.337	0.337
5	5.563	0.258	0.258		0.375	0.375
6	6.625	0.28	0.28		0.432	0.432
8	8.625	0.322	0.322	0.406	0.5	0.5
10	10.75	0.365	0.365	0.5	0.594	0.5
12	12.75	0.406	0.375	0.562	0.688	0.5
14	14	0.438	0.375	0.594	0.75	0.5
16	16	0.5	0.375	0.656	0.844	0.5
18	18	0.562	0.375	0.75	0.938	0.5
20	20	0.594	0.375	0.812	1.031	0.5
22	22		0.375	0.875	1.125	0.5
24	24	0.688	0.375	0.969	1.219	0.5
26	26		0.375			0.5
28	28		0.375			0.5
30	30		0.375			0.5
32	32	0.688	0.375			0.5
34	34	0.688	0.375			0.5
36	36	0.75	0.375			0.5
ASME B36.10M-2015: Welded and Seamless Wrought Steel Pipe
Don’t get confused between 3 1/2 inch nominal with 3.5 inch OD, 4″ nominal with 4.000″ OD

Schedule 100, Schedule 120, Schedule 140, Schedule 160, and Schedule XXS

Nominal Pipe Schedule Chart for Sch 100, 120,140, 160 & XXS in Inches
Nominal Pipe Size in Inch	OD in Inch	100	120	140	160	XXS
1/2	0.84				0.188	0.294
3/4	1.05				0.219	0.308
1	1.315				0.25	0.358
1 1/4	1.66				0.25	0.382
1 1/2	1.9				0.281	0.4
2	2.375				0.344	0.436
2 1/2	2.875				0.375	0.552
3	3.5				0.438	0.6
3 1/2	4					0.636
4	4.5		0.438		0.531	0.674
5	5.563		0.5		0.625	0.75
6	6.625		0.562		0.719	0.864
8	8.625	0.594	0.719	0.812	0.906	0.875
10	10.75	0.719	0.844	1	1.125	1
12	12.75	0.844	1	1.125	1.312	1
14	14	0.938	1.094	1.25	1.406
16	16	1.031	1.219	1.438	1.594
18	18	1.156	1.375	1.562	1.781
20	20	1.281	1.5	1.75	1.969
22	22	1.375	1.625	1.875	2.125
24	24	1.531	1.812	2.062	2.344
ASME B36.10M-2015: Welded and Seamless Wrought Steel Pipe
Don’t get confused between 3 1/2 inch nominal with 3.5 inch OD, 4″ nominal with 4.000″ OD

Pipe Schedule Chart for Stainless Steel Pipe in Inches

Nominal Pipe Schedule Chart for SS Pipes with Sch 5s, 10s, 40s and 80s in Inches
Nominal Pipe Size in Inch	OD in Inch	5S	10S	40S	80S
1/8	0.405		0.049	0.068	0.095
1/4	0.54		0.065	0.088	0.119
3/8	0.675		0.065	0.091	0.126
1/2	0.84	0.065	0.083	0.109	0.147
3/4	1.05	0.065	0.083	0.113	0.154
1	1.315	0.065	0.109	0.133	0.179
1 1/4	1.66	0.065	0.109	0.14	0.191
1 1/2	1.9	0.065	0.109	0.145	0.2
2	2.375	0.065	0.109	0.154	0.218
2 1/2	2.875	0.083	0.12	0.203	0.276
3	3.5	0.083	0.12	0.216	0.3
3 1/2	4	0.083	0.12	0.226	0.318
4	4.5	0.083	0.12	0.237	0.337
5	5.563	0.109	0.134	0.258	0.375
6	6.625	0.109	0.134	0.28	0.432
8	8.625	0.109	0.148	0.322	0.5
10	10.75	0.134	0.165	0.365	0.5
12	12.75	0.156	0.18	0.375	0.5
14	14	0.156	0.188	0.375	0.5
16	16	0.165	0.188	0.375	0.5
18	18	0.165	0.188	0.375	0.5
20	20	0.188	0.218	0.375	0.5
22	22	0.188	0.218
24	24	0.218	0.25	0.375	0.5
30	30	0.25	0.312
ASME B36.19M-2004: Stainless Steel Pipe (For 5S,10S,40S and 80S)
Don’t get confused between 3 1/2 inch nominal with 3.5 inch OD, 4″ nominal with 4.000″ OD

Pipe Schedule Chart for Carbon Steel Pipe in Millimeter

Schedule 5, Schedule 10, and Schedule 30

Nominal Pipe Schedule Chart for Sch 5, 10, 20 and 30 in Millimeter (mm)
DN in mm	OD	5	10	20	30
6	10.3		1.24
8	13.7		1.65
10	17.1		1.65		1.85
15	21.3	1.65	2.11		2.41
20	26.7	1.65	2.11		2.41
25	33.4	1.65	2.77		2.9
32	42.2	1.65	2.77		2.97
40	48.3	1.65	2.77		3.18
50	60.3	1.65	2.77		3.18
65	73	2.11	3.05		4.78
80	88.9	2.11	3.05		4.78
90	101.6	2.11	3.05		4.78
100	114.3	2.11	3.05		4.78
125	141.3	2.77	3.4
150	168.3	2.77	3.4
200	219.1	2.77	3.76	6.35	7.04
250	273	3.4	4.19	6.35	7.8
300	323.8	3.96	4.57	6.35	8.38
350	355.6	3.96	6.35	7.92	9.53
400	406.4	4.19	6.35	7.92	9.53
450	457	4.19	6.35	7.92	11.13
500	508	4.78	6.35	9.53	12.7
550	559	4.78	6.35	9.53	12.7
600	610	5.54	6.35	9.53	14.27
650	660		7.92	12.7
700	711		7.92	12.7	15.88
750	762	6.35	7.92	12.7	15.88
800	813		7.92	12.7	15.88
850	864		7.92	12.7	15.88
900	914		7.92	12.7	15.88
ASME B36.10M-2015: Welded and Seamless Wrought Steel Pipe