Weight tables for steel pipe and pipe schedules provided in the ASME B36.10M standard are the most commonly used resources for industrial applications.
Standardization of welded and seamless forged steel pipe sizes for high and low temperatures and pressures is covered in ASME B36.10M.
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Pipe Weight Charts
Although the standard provides formulas for calculations, they are still too cumbersome for everyday viewing use, so ASME B36.10M Table 1 provides detailed information including pipe nominal diameter, wall thickness, schedule grade, and the corresponding pipe weight in lb/ft or kg/m.
ASME B36.10M Provides a nominal flat end weight based on the weight of the calculation method and is also based on the outer diameter (OD) and wall thickness (WT) of the steel pipe classification.
For a table of pipe weights for threads, check out the ASTM A53 threaded and coupled pipe weight chart (Table 2.3).
Selection of Wall Thickness of Steel Pipe
The choice of wall thickness depends mainly on the resistance to internal pressure under given conditions.
capacity should be based on specific values from the Boiler and Pressure Vessel Code, ASME B31 Pressure Piping Code, with the construction code as the construction specifications.
Definition of a Schedule Number
Schedule numbering system for pipe size and wall thickness combinations.
Schedule Number = 1000 (P/S)
P represents the design working pressure of the pipe, usually in psi (pounds per square inch)
S represents the minimum allowable stress of the pipe material at operating temperature, also in psi (pounds per square inch).
Schedule 40
Schedule 40 is a widely used wall thickness classification standard in piping engineering that specifies the standard wall thickness that a pipe of a certain outside diameter should have.
| DN | NPS | Outside Diameter | Wall Thickness |
Plain End Mass |
Identification | Schedule No. |
|||
| mm | in | mm | in | kg/m | lb/ft | ||||
| 6 | 1/8 | 10.3 | 0.405 | 1.73 | 0.068 | 0.37 | 0.24 | STD | 40 |
| 8 | 1/4 | 13.7 | 0.540 | 2.24 | 0.088 | 0.63 | 0.43 | STD | 40 |
| 10 | 3/8 | 17.1 | 0.675 | 2.31 | 0.091 | 0.84 | 0.57 | STD | 40 |
| 15 | 1/2 | 21.3 | 0.840 | 2.77 | 0.109 | 1.27 | 0.85 | STD | 40 |
| 20 | 3/4 | 26.7 | 1.050 | 2.87 | 0.113 | 1.69 | 1.13 | STD | 40 |
| 25 | 1 | 33.4 | 1.315 | 3.38 | 0.133 | 2.50 | 1.68 | STD | 40 |
| 32 | 1 1/4 | 42.2 | 1.660 | 3.56 | 0.140 | 3.39 | 2.27 | STD | 40 |
| 40 | 1 1/2 | 48.3 | 1.900 | 3.68 | 0.145 | 4.05 | 2.72 | STD | 40 |
| 50 | 2 | 60.3 | 2.375 | 3.91 | 0.154 | 5.44 | 3.66 | STD | 40 |
| 65 | 21/2 | 73.0 | 2.875 | 5.16 | 0.203 | 8.63 | 5.80 | STD | 40 |
| 80 | 3 | 88.9 | 3.500 | 5.49 | 0.216 | 11.29 | 7.58 | STD | 40 |
| 90 | 3 1/2 | 101.6 | 4.000 | 5.74 | 0.226 | 13.57 | 9.12 | STD | 40 |
| 100 | 4 | 114.3 | 4.500 | 6.02 | 0.237 | 16.08 | 10.80 | STD | 40 |
| 125 | 5 | 141.3 | 5.563 | 6.55 | 0.258 | 21.77 | 14.63 | STD | 40 |
| 150 | 6 | 168.3 | 6.625 | 7.11 | 0.280 | 28.26 | 18.99 | STD | 40 |
| 200 | 8 | 219.1 | 8.625 | 8.18 | 0.322 | 42.55 | 28.58 | STD | 40 |
| 250 | 10 | 273.0 | 10.750 | 9.27 | 0.365 | 60.29 | 40.52 | STD | 40 |
| 300 | 12 | 323.8 | 12.750 | 10.31 | 0.406 | 79.71 | 53.57 | 40 | |
| 350 | 14 | 355.6 | 14.000 | 11.13 | 0.438 | 94.55 | 63.50 | 40 | |
| 400 | 16 | 406.4 | 16.000 | 12.7 | 0.500 | 123.31 | 82.85 | XS | 40 |
| 450 | 18 | 457 | 18.000 | 14.27 | 0.562 | 155.81 | 104.76 | 40 | |
| 500 | 20 | 508 | 20.000 | 15.09 | 0.594 | 183.43 | 123.23 | 40 | |
| 600 | 24 | 610 | 24.000 | 17.48 | 0.688 | 255.43 | 171.45 | 40 | |
| 800 | 32 | 813 | 32.000 | 17.48 | 0.688 | 342.94 | 230.29 | 40 | |
| 850 | 34 | 864 | 34.000 | 17.48 | 0.688 | 364.92 | 245.00 | 40 | |
| 900 | 36 | 914 | 36.000 | 19.05 | 0.750 | 420.45 | 282.62 | 40 | |
If you want to know more about the pipe weights and dimensions in the standard, you can click on the Pipe Weight Charts and Schedules Summary to check it out.
Advantages of Schedule 40
Medium Strength and Economy
Schedule 40 provides good strength and pressure resistance while maintaining a reasonable balance between cost and weight for most low and medium-pressure applications.
Wide range of compatibility
Many fittings and connections are designed based on Schedule 40 sizing standards, making this type of piping easy to integrate and install with other systems.
Standardized production
Due to its popularity, manufacturers are able to mass-produce Schedule 40 pipes and fittings, further reducing costs and increasing product availability.
Adaptable
Schedule 40 pipe is available in medium wall thicknesses for residential, commercial, and light industrial applications for a wide range of fluid systems, from water piping to gas distribution.
As a result, Schedule 40 has been adopted for its economy, compatibility, and applicability in a wide variety of piping systems, ranging from domestic water systems to industrial fluid transportation.
Schedule 80
Schedule 80 pipe is suitable for applications requiring higher pressure and abrasion resistance due to its reinforced properties.
| DN | NPS | Outside Diameter | Wall Thickness |
Plain End Mass |
Identification | Schedule No. |
|||
| mm | in | mm | in | kg/m | lb/ft | ||||
| 6 | 1/8 | 10.3 | 0.405 | 2.41 | 0.095 | 0.47 | 0.31 | XS | 80 |
| 8 | 1/4 | 13.7 | 0.540 | 3.02 | 0.119 | 0.80 | 0.54 | XS | 80 |
| 10 | 3/8 | 17.1 | 0.675 | 3.2 | 0.126 | 1.10 | 0.74 | XS | 80 |
| 15 | 1/2 | 21.3 | 0.840 | 3.73 | 0.147 | 1.62 | 1.09 | XS | 80 |
| 20 | 3/4 | 26.7 | 1.050 | 3.91 | 0.154 | 2.20 | 1.48 | XS | 80 |
| 25 | 1 | 33.4 | 1.315 | 4.55 | 0.179 | 3.24 | 2.17 | XS | 80 |
| 32 | 1 1/4 | 42.2 | 1.660 | 4.85 | 0.191 | 4.47 | 3.00 | XS | 80 |
| 40 | 1 1/2 | 48.3 | 1.900 | 5.08 | 0.200 | 5.41 | 3.63 | XS | 80 |
| 50 | 2 | 60.3 | 2.375 | 5.54 | 0.218 | 7.48 | 5.03 | XS | 80 |
| 65 | 2 1/2 | 73.0 | 2.875 | 7.01 | 0.276 | 11.41 | 7.67 | XS | 80 |
| 80 | 3 | 88.9 | 3.500 | 7.62 | 0.300 | 15.27 | 10.26 | XS | 80 |
| 90 | 3 1/2 | 101.6 | 4.000 | 8.08 | 0.318 | 18.64 | 12.52 | XS | 80 |
| 100 | 4 | 114.3 | 4.500 | 8.56 | 0.337 | 22.32 | 15.00 | XS | 80 |
| 125 | 5 | 141.3 | 5.563 | 9.53 | 0.375 | 30.97 | 20.80 | XS | 80 |
| 150 | 6 | 168.3 | 6.625 | 10.97 | 0.432 | 42.56 | 28.60 | XS | 80 |
| 200 | 8 | 219.1 | 8.625 | 12.7 | 0.500 | 64.64 | 43.43 | XS | 80 |
| 250 | 10 | 273.0 | 10.750 | 15.09 | 0.594 | 95.98 | 64.49 | 80 | |
| 300 | 12 | 323.8 | 12.750 | 17.48 | 0.688 | 132.05 | 88.71 | 80 | |
| 350 | 14 | 355.6 | 14.000 | 19.05 | 0.750 | 158.11 | 106.23 | 80 | |
| 400 | 16 | 406.4 | 16.000 | 21.44 | 0.844 | 203.54 | 136.74 | 80 | |
| 450 | 18 | 457 | 18.000 | 23.83 | 0.938 | 254.57 | 171.08 | 80 | |
| 500 | 20 | 508 | 20.000 | 26.19 | 1.031 | 311.19 | 209.06 | 80 | |
| 550 | 22 | 559 | 22.000 | 28.58 | 1.125 | 373.85 | 251.05 | 80 | |
| 600 | 24 | 610 | 24.000 | 30.96 | 1.219 | 442.11 | 296.86 | 80 | |
Advantages of Schedule 80
Enhanced Pressure Resistance
Schedule 80 has a thicker pipe wall than Schedule 40, providing higher pressure resistance for high-pressure applications.
Corrosion and abrasion resistance
The thicker wall thickness allows Schedule 80 pipe to perform better in corrosive or abrasive environments, extending service life.
Suitable for harsh environments
This type of piping is commonly used in the chemical, oil, and gas industries, where piping can be exposed to extreme temperatures and chemicals.
High safety standards
Enhanced structural strength gives the Schedule 80 pipe an advantage in terms of safety, especially when subjected to high internal pressures.
Weight Calculation Methods
Customary Units
Wƿe= 10.69（D-t）×t
D: outside diameter to the nearest 0.001 in.
t: specified wall thickness, rounded to the nearest 0.001 in.
Wƿe: nominal plain end mass, rounded to the nearest 0.01 Ib/ft.
SI Units
Wƿe= 0.0246615（D-t）×t
D: outside diameter to the nearest 0.1 mm for outside diameters that are 16 in. (406.4 mm) and smaller and to the nearest 1.0 mm for outside diameters larger than 16 in.(406.4 mm).
t: specified wall thickness, rounded to the nearest 0.01 mm.
Wƿe: nominal plain end mass, rounded to the nearest 0.01 kg/m.
Please note that the formula is based on the density of the tube being 7850 kg/m³.
Overview of ASME B36.10M
ASME B36.10M is a standard developed by the American Society of Mechanical Engineers (ASME) that details the dimensions, wall thicknesses, and weights of welded and seamless steel pipe.
Key features of the standard include:
Extensive size coverage
ASME B36.10M covers steel pipe from DN 6-2000 mm [NPS 1/8- 80 in.], providing complete dimensional and wall thickness data.
Includes two pipe types
The standard includes seamless and welded steel pipe for different production and application requirements.
Detailed Weight and Wall Thickness Information: Tables of theoretical weights and wall thicknesses are provided for each tube size and for different "Schedule" numbers.
Wide range of industrial applications
ASME B36.10M steel pipe is widely used in oil, gas, chemical, power, construction, and many other industrial fields.
International influence
Although it is an American standard, its influence and applicability are widespread, and many projects internationally adopt this standard to ensure the compatibility and safety of piping systems.
Overall, ASME B36.10M provides an important technical standard for the production and use of steel pipe, helping to ensure engineering safety and economic efficiency in different environments.
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Post time: Mar-03-2024