Pipe Wall Thickness Charts (in inches and mm. by NPS/Schedule) by Material Grade (CS, AS, SS)

ASME B36.10 (CS/AS Pipe Sizes), ASME B36.19 (SS/Nickel Alloy Pipe Sizes), Pipe Sizes, Pipe Wall Thickness

Pipe schedule charts, extracted from the ASME B36.10 and ASME B36.19 specifications, are useful in the engineering and design of piping systems across various industries. These charts provide standardized wall thickness dimensions for carbon, alloy, stainless steel pipes, facilitating the selection and specification process for engineers, designers, and industry professionals. Understanding these charts and their applications is crucial for ensuring that piping systems are designed and constructed to meet the required standards for safety, efficiency, and reliability.

PIPE SCHEDULE CHARTS

PIPES WALL THICKNESS IN INCHES (BY NPS/SCHEDULE)

This article focuses on the standard wall thickness sizes (in inches and in millimeters) of carbon, alloy, stainless/duplex, and nickel alloy pipes. The wall thickness is expressed according to a special designation, called “Schedule”.

Learn more about the concept of Pipe Schedule.

To view the dimensions and weights (in Lbs/ft and Kg/m) of steel pipes, consult the broader ASME B36.10M and ASME B36.19M pipe sizes charts.

CARBON AND ALLOY STEEL PIPES (ASME B36.10M)

The table shows the wall thickness in inches for combinations of pipe NPS (nominal pipe size) and SCH (pipe schedule) – for carbon/alloy steel ASTM grades (according to the ASME B36.10M Specification):

NPS	OD (inches)	Sch 5	Sch 10	Sch 20	Sch 30	Sch 40	Sch Std	Sch 60	Sch 80	Sch XS	Sch 100	Sch 120	Sch 140	Sch 160	Sch XXS	NPS
1/8	0.405		0.049			0.068	0.068		0.095	0.095						1/8
1/4	0.54		0.065			0.088	0.088		0.119	0.119						1/4
3/8	0.675		0.065		0.073	0.091	0.091		0.126	0.126						3/8
1/2	0.84	0.065	0.083		0.095	0.109	0.109		0.147	0.147				0.188	0.294	1/2
3/4	1.05	0.065	0.083		0.095	0.113	0.113		0.154	0.154				0.219	0.308	3/4
1	1.315	0.065	0.109		0.114	0.133	0.133		0.179	0.179				0.25	0.358	1
1 1/4	1.66	0.065	0.109		0.117	0.14	0.14		0.191	0.191				0.25	0.382	1 1/4
1 1/2	1.9	0.065	0.109		0.125	0.145	0.145		0.2	0.2				0.281	0.4	1 1/2
2	2.375	0.065	0.109		0.125	0.154	0.154		0.218	0.218				0.344	0.436	2
2 1/2	2.875	0.083	0.12		0.188	0.203	0.203		0.276	0.276				0.375	0.552	2 1/2
3	3.5	0.083	0.12		0.188	0.216	0.216		0.3	0.3				0.438	0.6	3
3 1/2	4	0.083	0.12		0.188	0.226	0.226		0.318	0.318					0.636	3 1/2
4	4.5	0.083	0.12		0.188	0.237	0.237		0.337	0.337		0.438		0.531	0.674	4
5	5.563	0.109	0.134			0.258	0.258		0.375	0.375		0.5		0.625	0.75	5
6	6.625	0.109	0.134			0.28	0.28		0.432	0.432		0.562		0.719	0.864	6
8	8.625	0.109	0.148	0.25	0.277	0.322	0.322	0.406	0.5	0.5	0.594	0.719	0.812	0.906	0.875	8
10	10.75	0.134	0.165	0.25	0.307	0.365	0.365	0.5	0.594	0.5	0.719	0.844	1	1.125	1	10
12	12.75	0.156	0.18	0.25	0.33	0.406	0.375	0.562	0.688	0.5	0.844	1	1.125	1.312	1	12
14	14	0.156	0.25	0.312	0.375	0.438	0.375	0.594	0.75	0.5	0.938	1.094	1.25	1.406		14
16	16	0.165	0.25	0.312	0.375	0.5	0.375	0.656	0.844	0.5	1.031	1.219	1.438	1.594		16
18	18	0.165	0.25	0.312	0.438	0.562	0.375	0.75	0.938	0.5	1.156	1.375	1.562	1.781		18
20	20	0.188	0.25	0.375	0.5	0.594	0.375	0.812	1.031	0.5	1.281	1.5	1.75	1.969		20
22	22	0.188	0.25	0.375	0.5		0.375	0.875	1.125	0.5	1.375	1.625	1.875	2.125		22
24	24	0.218	0.25	0.375	0.562	0.688	0.375	0.969	1.219	0.5	1.531	1.812	2.062	2.344		24
26	26		0.312	0.5			0.375			0.5						26
28	28		0.312	0.5	0.625		0.375			0.5						28
30	30	0.25	0.312	0.5	0.625		0.375			0.5						30
32	32		0.312	0.5	0.625	0.688	0.375			0.5						32
34	34		0.312	0.5	0.625	0.688	0.375			0.5						34
36	36		0.312	0.5	0.625	0.75	0.375			0.5						36
NPS	OD (inches)	Sch 5	Sch 10	Sch 20	Sch 30	Sch 40	Sch Std	Sch 60	Sch 80	Sch XS	Sch 100	Sch 120	Sch 140	Sch 160	Sch XXS	NPS

⬇️ Download Pipe Schedule Chart ASME B36.10

STAINLESS/DUPLEX STEEL & NICKEL ALLOY PIPES (ASME B36.19M)

The table shows the wall thickness in inches for combinations of pipe NPS (nominal pipe size) and SCH (pipe schedule) – for stainless steel, duplex/super duplex steel, and nickel alloy ASTM grades (according to the ASME B36.19M Specification):

NPS	OD (in Inch.)	5S	10S	40S	80S	NPS
1/8	0.405		0.049	0.068	0.095	1/8
1/4	0.54		0.065	0.088	0.119	1/4
3/8	0.675		0.065	0.091	0.126	3/8
1/2	0.84	0.065	0.083	0.109	0.147	1/2
3/4	1.05	0.065	0.083	0.113	0.154	3/4
1	1.315	0.065	0.109	0.133	0.179	1
1 1/4	1.66	0.065	0.109	0.14	0.191	1 1/4
1 1/2	1.9	0.065	0.109	0.145	0.2	1 1/2
2	2.375	0.065	0.109	0.154	0.218	2
2 1/2	2.875	0.083	0.12	0.203	0.276	2 1/2
3	3.5	0.083	0.12	0.216	0.3	3
3 1/2	4	0.083	0.12	0.226	0.318	3 1/2
4	4.5	0.083	0.12	0.237	0.337	4
5	5.563	0.109	0.134	0.258	0.375	5
6	6.625	0.109	0.134	0.28	0.432	6
8	8.625	0.109	0.148	0.322	0.5	8
10	10.75	0.134	0.165	0.365	0.5	10
12	12.75	0.156	0.18	0.375	0.5	12
14	14	0.156	0.188	0.375	0.5	14
16	16	0.165	0.188	0.375	0.5	16
18	18	0.165	0.188	0.375	0.5	18
20	20	0.188	0.218	0.375	0.5	20
22	22	0.188	0.218			22
24	24	0.218	0.25	0.375	0.5	24
30	30	0.25	0.312			30
NPS	OD (in Inch.)	5S	10S	40S	80S	NPS

⬇️ Download Pipe Schedule Chart ASME B36.19

PIPES WALL THICKNESS IN MILLIMETERS (BY DN/SCHEDULE)

CARBON AND ALLOY STEEL PIPES (ASME B36.10M)

The table shows the wall thickness in millimeters for combinations of pipe DN (nominal diameter) and SCH (pipe schedule) – for carbon/alloy steel ASTM grades (according to the ASME B36.10M Specification):

DN (mm)	OD (mm)	Sch 5	Sch 10	Sch 20	Sch 30	Sch 40	Sch Std	Sch 60	Sch 80	Sch XS	Sch 100	Sch 120	Sch 140	Sch 160	Sch XXS
6	10.3		1.24			1.73	1.73		2.41	2.41
8	13.7		1.65			2.24	2.24		3.02	3.02
10	17.1		1.65		1.85	2.31	2.31		3.2	3.2
15	21.3	1.65	2.11		2.41	2.77	2.77		3.73	3.73				4.78	7.47
20	26.7	1.65	2.11		2.41	2.87	2.87		3.91	3.91				5.56	7.82
25	33.4	1.65	2.77		2.9	3.38	3.38		4.55	4.55				6.35	9.09
32	42.2	1.65	2.77		2.97	3.56	3.56		4.85	4.85				6.35	9.7
40	48.3	1.65	2.77		3.18	3.68	3.68		5.08	5.08				7.14	10.16
50	60.3	1.65	2.77		3.18	3.91	3.91		5.54	5.54				8.74	11.07
65	73	2.11	3.05		4.78	5.16	5.16		7.01	7.01				9.53	14.02
80	88.9	2.11	3.05		4.78	5.49	5.49		7.62	7.62				11.13	15.24
90	101.6	2.11	3.05		4.78	5.74	5.74		8.08	8.08					16.15
100	114.3	2.11	3.05		4.78	6.02	6.02		8.56	8.56		11.13		13.49	17.12
125	141.3	2.77	3.4			6.55	6.55		9.53	9.53		12.7		15.88	19.05
150	168.3	2.77	3.4			7.11	7.11		10.97	10.97		14.27		18.26	21.95
200	219.1	2.77	3.76	6.35	7.04	8.18	8.18	10.31	12.7	12.7	15.09	18.26	20.62	23.01	22.23
250	273	3.4	4.19	6.35	7.8	9.27	9.27	12.7	15.09	12.7	18.26	21.44	25.4	28.58	25.4
300	323.8	3.96	4.57	6.35	8.38	10.31	9.53	14.27	17.48	12.7	21.44	25.4	28.58	33.32	25.4
350	355.6	3.96	6.35	7.92	9.53	11.13	9.53	15.09	19.05	12.7	23.83	27.79	31.75	35.71
400	406.4	4.19	6.35	7.92	9.53	12.7	9.53	16.66	21.44	12.7	26.19	30.96	36.53	40.49
450	457	4.19	6.35	7.92	11.13	14.27	9.53	19.05	23.83	12.7	29.36	34.93	39.67	45.24
500	508	4.78	6.35	9.53	12.7	15.09	9.53	20.62	26.19	12.7	32.54	38.1	44.45	50.01
550	559	4.78	6.35	9.53	12.7		9.53	22.23	28.58	12.7	34.93	41.28	47.63	53.98
600	610	5.54	6.35	9.53	14.27	17.48	9.53	24.61	30.96	12.7	38.89	46.02	52.37	59.54
650	660		7.92	12.7			9.53			12.7
700	711		7.92	12.7	15.88		9.53			12.7
750	762	6.35	7.92	12.7	15.88		9.53			12.7
800	813		7.92	12.7	15.88	17.48	9.53			12.7
850	864		7.92	12.7	15.88	17.48	9.53			12.7
900	914		7.92	12.7	15.88	19.05	9.53			12.7
950							9.53			12.7
1000							9.53			12.7
1050							9.53			12.7
1100							9.53			12.7
1150							9.53			12.7
1200							9.53			12.7

STAINLESS/DUPLEX STEEL & NICKEL ALLOY PIPES (ASME B36.19M)

The table shows the wall thickness in millimeters for combinations of pipe NPS (nominal diameter) and SCH (pipe schedule) – for stainless steel, duplex/super duplex steel, and nickel alloy ASTM grades (according to the ASME B36.19M Specification):

DN (mm)	OD (mm)	Sch 5s	Sch 10s	Sch 40s	Sch 80s
6	10.3		1.24	1.73	2.41
8	13.7		1.65	2.24	3.02
10	17.1		1.65	2.31	3.2
15	21.3	1.65	2.11	2.77	3.73
20	26.7	1.65	2.11	2.87	3.91
25	33.4	1.65	2.77	3.38	4.55
32	42.2	1.65	2.77	3.56	4.85
40	48.3	1.65	2.77	3.68	5.08
50	60.3	1.65	2.77	3.91	5.54
65	73	2.11	3.05	5.16	7.01
80	88.9	2.11	3.05	5.49	7.62
90	101.6	2.11	3.05	5.74	8.08
100	114.3	2.11	3.05	6.02	8.56
125	141.3	2.77	3.4	6.55	9.53
150	168.3	2.77	3.4	7.11	10.97
200	219.1	2.77	3.76	8.18	12.7
250	273	3.4	4.19	9.27	12.7
300	323.8	3.96	4.57	9.53	12.7
350	355.6	3.96	4.78	9.53	12.7
400	406.4	4.19	4.78	9.53	12.7
450	457	4.19	4.78	9.53	12.7
500	508	4.78	5.54	9.53	12.7
550	559	4.78	5.54
600	610	5.54	6.35	9.53	12.7
750	762	6.35	7.92

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About the Author

Fabrizio S.

Fabrizio is a seasoned professional in the international trading of materials for projects, including piping, steel, and metal commodities with a distinguished career spanning over two decades. He has become a pivotal figure in the industry, renowned for his expertise in bridging the gap between EPC contractors, end users, manufacturers, and stockists to facilitate the seamless delivery of complex piping product packages across the globe. Starting his journey with a strong academic background in business administration and international trade, Fabrizio quickly distinguished himself in the field through his adept negotiation skills, strategic vision, and unparalleled knowledge of the project materials market. His career trajectory has seen him collaborate with leading names in the construction, oil & gas, and petrochemical industries, earning a reputation for excellence in executing large-scale projects (EPC Contractors, Oil & Gas End Users). At the core of Fabrizio's success is his ability to understand the intricate needs of EPC contractors and end users, aligning these with the capabilities of manufacturers and stockists. He excels in orchestrating the entire supply chain process, from product specification and procurement to logistics and on-time delivery, ensuring that each project phase is executed flawlessly. Fabrizio's role involves intense coordination and communication, leveraging his extensive network within the industry to negotiate competitive prices, manage complex logistical challenges, and navigate the regulatory landscape of international trade. His strategic approach to package assembly and delivery has resulted in cost efficiencies, timely project execution, and high satisfaction levels among stakeholders. Beyond his professional achievements, Fabrizio is an active participant in industry forums and conferences, such as Adipec, Tube, and similar, where he shares insights on market trends, supply chain optimization, and the future of project materials trading. His contributions to the field are not only limited to his operational excellence but also include mentoring young professionals entering the trade. Fabrizio is one of the co-founders of Projectmaterials, a B2B marketplace targeting the above markets. https://www.linkedin.com/in/fvs20092023/

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Pipe Wall Thickness Charts (in inches and mm. by NPS/Schedule) by Material Grade (CS, AS, SS)

Pipe Wall Thickness Charts (in inches and mm. by NPS/Schedule) by Material Grade (CS, AS, SS)

PIPE SCHEDULE CHARTS

PIPES WALL THICKNESS IN INCHES (BY NPS/SCHEDULE)

CARBON AND ALLOY STEEL PIPES (ASME B36.10M)

STAINLESS/DUPLEX STEEL & NICKEL ALLOY PIPES (ASME B36.19M)

PIPES WALL THICKNESS IN MILLIMETERS (BY DN/SCHEDULE)

CARBON AND ALLOY STEEL PIPES (ASME B36.10M)

STAINLESS/DUPLEX STEEL & NICKEL ALLOY PIPES (ASME B36.19M)

Fabrizio S.

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