pipe size chart

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

pipe size chart

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

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”.

pipe sizes
Pipe Sizes (OD, WT=SCH, ID)

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):

NPSOD (inches)Sch 5Sch 10Sch 20Sch 30Sch 40Sch StdSch 60Sch 80Sch XSSch 100Sch 120Sch 140Sch 160Sch XXSNPS
 1/80.405 0.049  0.0680.068 0.0950.095      1/8
 1/40.54 0.065  0.0880.088 0.1190.119      1/4
 3/80.675 0.065 0.0730.0910.091 0.1260.126      3/8
 1/20.840.0650.083 0.0950.1090.109 0.1470.147   0.1880.294 1/2
 3/41.050.0650.083 0.0950.1130.113 0.1540.154   0.2190.308 3/4
1   1.3150.0650.109 0.1140.1330.133 0.1790.179   0.250.3581   
1 1/41.660.0650.109 0.1170.140.14 0.1910.191   0.250.3821 1/4
1 1/21.90.0650.109 0.1250.1450.145 0.20.2   0.2810.41 1/2
2   2.3750.0650.109 0.1250.1540.154 0.2180.218   0.3440.4362   
2 1/22.8750.0830.12 0.1880.2030.203 0.2760.276   0.3750.5522 1/2
3   3.50.0830.12 0.1880.2160.216 0.30.3   0.4380.63   
3 1/240.0830.12 0.1880.2260.226 0.3180.318    0.6363 1/2
4   4.50.0830.12 0.1880.2370.237 0.3370.337 0.438 0.5310.6744   
5   5.5630.1090.134  0.2580.258 0.3750.375 0.5 0.6250.755   
6   6.6250.1090.134  0.280.28 0.4320.432 0.562 0.7190.8646   
8   8.6250.1090.1480.250.2770.3220.3220.4060.50.50.5940.7190.8120.9060.8758   
10   10.750.1340.1650.250.3070.3650.3650.50.5940.50.7190.84411.125110   
12   12.750.1560.180.250.330.4060.3750.5620.6880.50.84411.1251.312112   
14   140.1560.250.3120.3750.4380.3750.5940.750.50.9381.0941.251.406 14   
16   160.1650.250.3120.3750.50.3750.6560.8440.51.0311.2191.4381.594 16   
18   180.1650.250.3120.4380.5620.3750.750.9380.51.1561.3751.5621.781 18   
20   200.1880.250.3750.50.5940.3750.8121.0310.51.2811.51.751.969 20   
22   220.1880.250.3750.5 0.3750.8751.1250.51.3751.6251.8752.125 22   
24   240.2180.250.3750.5620.6880.3750.9691.2190.51.5311.8122.0622.344 24   
26   26 0.3120.5  0.375  0.5     26   
28   28 0.3120.50.625 0.375  0.5     28   
30   300.250.3120.50.625 0.375  0.5     30   
32   32 0.3120.50.6250.6880.375  0.5     32   
34   34 0.3120.50.6250.6880.375  0.5     34   
36   36 0.3120.50.6250.750.375  0.5     36   
NPSOD (inches)Sch 5Sch 10Sch 20Sch 30Sch 40Sch StdSch 60Sch 80Sch XSSch 100Sch 120Sch 140Sch 160Sch XXSNPS

⬇️ 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):

NPSOD (in Inch.)5S10S40S80SNPS
 1/80.405 0.0490.0680.095 1/8
 1/40.54 0.0650.0880.119 1/4
 3/80.675 0.0650.0910.126 3/8
 1/20.840.0650.0830.1090.147 1/2
 3/41.050.0650.0830.1130.154 3/4
1   1.3150.0650.1090.1330.1791   
1 1/41.660.0650.1090.140.1911 1/4
1 1/21.90.0650.1090.1450.21 1/2
2   2.3750.0650.1090.1540.2182   
2 1/22.8750.0830.120.2030.2762 1/2
3   3.50.0830.120.2160.33   
3 1/240.0830.120.2260.3183 1/2
4   4.50.0830.120.2370.3374   
5   5.5630.1090.1340.2580.3755   
6   6.6250.1090.1340.280.4326   
8   8.6250.1090.1480.3220.58   
10   10.750.1340.1650.3650.510   
12   12.750.1560.180.3750.512   
14   140.1560.1880.3750.514   
16   160.1650.1880.3750.516   
18   180.1650.1880.3750.518   
20   200.1880.2180.3750.520   
22   220.1880.218  22   
24   240.2180.250.3750.524   
30   300.250.312  30   
NPSOD (in Inch.)5S10S40S80SNPS

⬇️ 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 5Sch 10Sch 20Sch 30Sch 40Sch StdSch 60Sch 80Sch XSSch 100Sch 120Sch 140Sch 160Sch XXS
610.3 1.24  1.731.73 2.412.41     
813.7 1.65  2.242.24 3.023.02     
1017.1 1.65 1.852.312.31 3.23.2     
1521.31.652.11 2.412.772.77 3.733.73   4.787.47
2026.71.652.11 2.412.872.87 3.913.91   5.567.82
2533.41.652.77 2.93.383.38 4.554.55   6.359.09
3242.21.652.77 2.973.563.56 4.854.85   6.359.7
4048.31.652.77 3.183.683.68 5.085.08   7.1410.16
5060.31.652.77 3.183.913.91 5.545.54   8.7411.07
65732.113.05 4.785.165.16 7.017.01   9.5314.02
8088.92.113.05 4.785.495.49 7.627.62   11.1315.24
90101.62.113.05 4.785.745.74 8.088.08    16.15
100114.32.113.05 4.786.026.02 8.568.56 11.13 13.4917.12
125141.32.773.4  6.556.55 9.539.53 12.7 15.8819.05
150168.32.773.4  7.117.11 10.9710.97 14.27 18.2621.95
200219.12.773.766.357.048.188.1810.3112.712.715.0918.2620.6223.0122.23
2502733.44.196.357.89.279.2712.715.0912.718.2621.4425.428.5825.4
300323.83.964.576.358.3810.319.5314.2717.4812.721.4425.428.5833.3225.4
350355.63.966.357.929.5311.139.5315.0919.0512.723.8327.7931.7535.71 
400406.44.196.357.929.5312.79.5316.6621.4412.726.1930.9636.5340.49 
4504574.196.357.9211.1314.279.5319.0523.8312.729.3634.9339.6745.24 
5005084.786.359.5312.715.099.5320.6226.1912.732.5438.144.4550.01 
5505594.786.359.5312.7 9.5322.2328.5812.734.9341.2847.6353.98 
6006105.546.359.5314.2717.489.5324.6130.9612.738.8946.0252.3759.54 
650660 7.9212.7  9.53  12.7     
700711 7.9212.715.88 9.53  12.7     
7507626.357.9212.715.88 9.53  12.7     
800813 7.9212.715.8817.489.53  12.7     
850864 7.9212.715.8817.489.53  12.7     
900914 7.9212.715.8819.059.53  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 5sSch 10sSch 40sSch 80s
610.3 1.241.732.41
813.7 1.652.243.02
1017.1 1.652.313.2
1521.31.652.112.773.73
2026.71.652.112.873.91
2533.41.652.773.384.55
3242.21.652.773.564.85
4048.31.652.773.685.08
5060.31.652.773.915.54
65732.113.055.167.01
8088.92.113.055.497.62
90101.62.113.055.748.08
100114.32.113.056.028.56
125141.32.773.46.559.53
150168.32.773.47.1110.97
200219.12.773.768.1812.7
2502733.44.199.2712.7
300323.83.964.579.5312.7
350355.63.964.789.5312.7
400406.44.194.789.5312.7
4504574.194.789.5312.7
5005084.785.549.5312.7
5505594.785.54  
6006105.546.359.5312.7
7507626.357.92  

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About the Author

Picture of Fabrizio S.

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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