Company TAP Vietnam International Investment Joint Stock Company (TAP Vietnam) is a company specialized in providing steel pipe products, including ASME and ANSI B36.10 and B36.19 standard steel pipes.
The ASME standard is an international standard for the design, manufacture, and testing of components in boiler and pressure systems. This standard was developed by the American Society of Mechanical Engineers (ASME) and is widely used worldwide.
The ANSI B36.10 and B36.19 standards both relate to the size and quality standards of steel pipes. ANSI B36.10 focuses on steel pipes used in industrial pipeline applications, while ANSI B36.19 focuses on steel pipes not used in industrial and medical applications.
TAP Vietnam provides these standard pipes to meet the needs of customers in various fields, including construction, oil and gas, chemicals, energy, and many other industries.
Standards: ASME B36.10 and ANSI B36.10
The ASME and ANSI B36.10 steel standards are important standards in the production of steel pipes with the correct size and quality.
ASME stands for the American Society of Mechanical Engineers, a professional organization that manages technical standards and guidance. Meanwhile, ANSI stands for the American National Standards Institute, a non-governmental organization that regulates and completes the development of national standards in the United States.
The ASME and ANSI B36.10 standards address the size, thickness, and weight of steel pipes produced for various applications. It includes detailed specifications for various types of steel pipes, such as round pipes, square pipes, rectangular pipes, elliptical pipes, and more. This standard also specifies general requirements for materials, wall thickness, and other technical specifications to ensure that steel pipes produced meet quality and safety standards.
Filtering the ASME and ANSI B36.10 standards is essential in ensuring the quality and all steel pipes used in industrial and construction applications.
Standards: ASME and ANSI B36.19
The ASME and ANSI B36.19 standards are important standards in the production of stainless steel pipes.
ASME stands for the American Society of Mechanical Engineers, a professional organization that manages technical standards and guidance. Meanwhile, ANSI stands for the American National Standards Institute, a non-governmental organization that regulates and completes the development of national standards in the United States.
The ASME and ANSI B36.19 standards are important in the production of stainless steel pipes. They specify the dimensions, tolerances, and material requirements for various types of stainless steel pipes. These standards ensure that stainless steel pipes produced meet the quality and safety standards required for use in various industries.
The TAP Vietnam International Investment Corporation (TAP Vietnam) is a company specialized in providing steel pipe products, including ASME and ANSI B36.10 and B36.19 standard steel pipes.
ASME standard is an international standard for the design, manufacture and testing of components in boiler and pressure systems. This standard was developed by the American Society of Mechanical Engineers (ASME) and is widely used worldwide.
The ANSI B36.10 and B36.19 standards relate to the size and quality standards of steel pipes. ANSI B36.10 focuses on steel pipes used in industrial pipeline applications, while ANSI B36.19 focuses on steel pipes that are not used in industrial and medical applications.
TAP Vietnam provides these standard steel pipes to meet the needs of customers in various fields, including construction, oil and gas, chemicals, energy, and many other industries.
ASME B36.10 and ANSI B36.10 standards
The ASME and ANSI B36.10 steel pipe standards are important standards in producing steel pipes with the correct size and quality.
ASME stands for the American Society of Mechanical Engineers, a professional organization that manages technical standards and guidelines. Meanwhile, ANSI stands for the American National Standards Institute, a non-governmental organization that regulates and finalizes the development of national standards in the United States.
The ASME and ANSI B36.10 standards address the size, thickness, and weight of steel pipes produced for different applications. It includes detailed technical specifications for various types of steel pipes, such as round pipes, square pipes, rectangular pipes, elliptical pipes, etc. This standard also specifies general requirements for materials, wall thickness, and other technical specifications to ensure that steel pipes are produced to meet quality and safety standards.
Filtering the ASME and ANSI B36.10 standards is very important in ensuring the quality and integrity of all steel pipes used in industrial and construction applications.
ASME and ANSI B36.19 standards
The ASME and ANSI B36.19 standards are important standards in producing stainless steel pipes.
ASME stands for the American Society of Mechanical Engineers, a professional organization that manages technical standards and guidelines. Meanwhile, ANSI stands for the American National Standards Institute, a non-governmental organization that regulates and finalizes the development of national standards in the United States.
The ASME and ANSI B36.19 standards are important in producing stainless steel pipes. They specify the dimensions and tolerances of stainless steel pipes for various applications. These standards also cover other technical specifications such as material requirements, heat treatment, and testing requirements to ensure that stainless steel pipes are produced to meet quality and safety standards.
Dimensions of Welded and Seamless Stainless Steel Pipe and Nominal Weights of Steel Pipe | ||||||||||||||||||
Stainless steel pipe | ASME B36.19M | |||||||||||||||||
SCOPE This Standard covers the standardization of dimensions of welded and seamless wrought stainless steel pipe for high or low temperatures and pressures. The word pipe is used, as distinguished from tube, to apply to tubular products of dimensions commonly used for pipeline and piping systems. Pipes NPS 12 (DN 300) and smaller have outside diameters numerically larger than their corresponding sizes. In contrast, the outside diameters of tubes are numerically identical to the size number for all sizes. The wall thicknesses for NPS 14 through 22, inclusive (DN 350–550, inclusive), of Schedule 10S; NPS 12 (DN 300) of Schedule 40S; and NPS 10 and 12 (DN 250 and 300) of Schedule 80S are not the same as those of ASME B36.10M. The suffix “S” in the schedule number is used to differentiate B36.19M pipe from B36.10M pipe. ASME B36.10M includes other pipe thicknesses that are also commercially available with stainless steel material. |
SIZE The size of all pipe in Table 1 is identified by the nominal pipe size. The manufacture of pipe NPS 1⁄8 (DN 6) through NPS 12 (DN 300), inclusive, is based on a standardized outside diameter (OD). This OD was originally selected so that pipe with a standard OD and having a wall thickness that was typical of the period would have an inside diameter (ID) approximately equal to the nominal size. Although there is no such relation between the existing standard thicknesses — OD and nominal size — these nominal sizes and standard ODs continue in use as “standard.” The manufacture of pipe NPS 14 (DN 350) and larger proceeds on the basis of an OD corresponding to the nominal size. |
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MATERIALS The dimensional standards for pipe described here are for products covered in ASTM specifications. |
WALL THICKNESS The nominal wall thicknesses are given in Table 1. |
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5 WEIGHTS The nominal weights1 of steel pipe are calculated values and are tabulated in Table 1. (a) The nominal plain end weight, in pounds per foot, is calculated using the following formula: W pe p 10.69(D − t)t where D p outside diameter to the nearest 0.001 in. (the symbol D is used for OD only in mathematical equations or formulas) W pe p nominal plain end weight, rounded to the nearest 0.01 lb/ft t p specified wall thickness, rounded to the nearest 0.001 in. (b) The nominal plain end mass, in kilograms per meter, is calculated using the following formula: W pe p 0.0246615(D − t)t where D p outside diameter to the nearest 0.1 mm for outside diameters that are 16 in. (406.4 mm) and smaller, and 1.0 mm for outside diameters larger than 16 in. (the symbol D is used for OD only in mathematical equations or formulas) W pe p nominal plain end mass, rounded to the nearest 0.01 kg/m t p specified wall thickness, rounded to the nearest 0.01 mm |
PERMISSIBLE VARIATIONS Variations in dimensions differ depending upon the method of manufacture employed in making the pipe to the various specifications available. Permissible variations for dimensions are indicated in each specification. |
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PIPE THREADS Unless otherwise specified, the threads of threaded pipe shall conform to ANSI / ASME B1.20.1, Pipe Threads, General Purpose (Inch). Schedules 5S and 10S wall thicknesses do not permit threading in accordance with ANSI/ASME B1.20.1. |
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WALL THICKNESS SELECTION When the selection of wall thickness depends primarily upon capacity to resist internal pressure under given conditions, the designer shall compute the exact value of wall thickness suitable for conditions for which the pipe is required, as prescribed in detail in the ASME Boiler and Pressure Vessel Code, ASME B31 Code for Pressure Piping, or other similar code, whichever governs the construction. A thickness shall be selected from the schedules of nominal thickness contained in Table 1 to suit the value computed to fulfill the conditions for which the pipe is desired. |
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Dimensions of Welded and Seamless Stainless Steel Pipe and Nominal Weights of Steel Pipe, Plain End | ||||||||||||||||||
U.S. Customary Units | SI Units | |||||||||||||||||
Nominal Pipe Size |
Outside Diameter, in. |
Wall Thickness, in |
Plain End Weight, lb/ft |
Schedule (SCH) No. |
DN [Note] (2) |
Outside Diameter, mm |
Wall, Thickness mm |
Plain End Mass, kg/m |
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1⁄8 | 0.405 | . . . (1) | . . . | 5S | 6 | 10.3 | . . . (1) | . . . | ||||||||||
1⁄8 | 0.405 | 0.049 (1) | 0.19 | 10S | 6 | 10.3 | 1.24 (1) | 0.28 | ||||||||||
1⁄8 | 0.405 | 0.068 | 0.24 | 40S | 6 | 10.3 | 1.73 | 0.37 | ||||||||||
1⁄8 | 0.405 | 0.095 | 0.31 | 80S | 6 | 10.3 | 2.41 | 0.47 | ||||||||||
1⁄4 | 0.54 | . . . (1) | . . . | 5S | 8 | 13.7 | . . . (1) | . . . | ||||||||||
1⁄4 | 0.54 | 0.065 (1) | 0.33 | 10S | 8 | 13.7 | 1.65 (1) | 0.49 | ||||||||||
1⁄4 | 0.54 | 0.088 | 0.43 | 40S | 8 | 13.7 | 2.24 | 0.63 | ||||||||||
1⁄4 | 0.54 | 0.119 |
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80S | 8 | 13.7 | 3.02 | 0.8 | ||||||||||
3⁄8 | 0.675 | . . . (1) | . . . | 5S | 10 | 17.1 | . . . (1) | . . . | ||||||||||
3⁄8 | 0.675 | 0.065 (1) | 0.42 | 10S | 10 | 17.1 | 1.65 (1) | 0.63 | ||||||||||
3⁄8 | 0.675 | 0.091 | 0.57 | 40S | 10 | 17.1 | 2.31 | 0.84 | ||||||||||
3⁄8 | 0.675 | 0.126 | 0.74 | 80S | 10 | 17.1 | 3.2 | 1.1 | ||||||||||
1⁄2 | 0.840 | 0.065 (1) | 0.54 | 5S | 15 | 21.3 | 1.65 (1) | 0.8 | ||||||||||
1⁄2 | 0.840 | 0.083 (1) | 0.67 | 10S | 15 | 21.3 | 2.11 (1) | 1 | ||||||||||
1⁄2 | 0.840 | 0.109 | 0.85 | 40S | 15 | 21.3 | 2.77 | 1.27 | ||||||||||
1⁄2 | 0.840 | 0.147 | 1.09 | 80S | 15 | 21.3 | 3.73 | 1.62 | ||||||||||
3⁄4 | 1.050 | 0.065 (1) | 0.68 | 5S | 20 | 26.7 | 1.65 (1) | 1.02 | ||||||||||
3⁄4 | 1.050 | 0.083 (1) | 0.86 | 10S | 20 | 26.7 | 2.11 (1) | 1.28 | ||||||||||
3⁄4 | 1.050 | 0.113 | 1.13 | 40S | 20 | 26.7 | 2.87 | 1.69 | ||||||||||
3⁄4 | 1.050 | 0.154 | 1.48 | 80S | 20 | 26.7 | 3.91 | 2.2 | ||||||||||
1 | 1.315 | 0.065 (1) | 0.87 | 5S | 25 | 33.4 | 1.65 (1) | 1.29 | ||||||||||
1 | 1.315 | 0.109 (1) | 1.41 | 10S | 25 | 33.4 | 2.77 (1) | 2.09 | ||||||||||
1 | 1.315 | 0.133 | 1.68 | 40S | 25 | 33.4 | 3.38 | 2.5 | ||||||||||
1 | 1.315 | 0.179 | 2.17 | 80S | 25 | 33.4 | 4.55 | 3.24 | ||||||||||
11⁄4 | 1.66 | 0.065 (1) | 1.11 | 5S | 32 | 42.2 | 1.65 (1) | 1.65 | ||||||||||
11⁄4 | 1.66 | 0.109 (1) | 1.81 | 10S | 32 | 42.2 | 2.77 (1) | 2.69 | ||||||||||
11⁄4 | 1.66 | 0.14 | 2.27 | 40S | 32 | 42.2 | 3.56 | 3.39 | ||||||||||
11⁄4 | 1.66 | 0.191 | 3 | 80S | 32 | 42.2 | 4.85 | 4.47 | ||||||||||
11⁄2 | 1.9 | 0.065 (1) | 1.28 | 5S | 40 | 48.3 | 1.65 (1) | 1.9 | ||||||||||
11⁄2 | 1.9 | 0.109 (1) | 2.09 | 10S | 40 | 48.3 | 2.77 (1) | 3.11 | ||||||||||
11⁄2 | 1.9 | 0.145 | 2.72 | 40S | 40 | 48.3 | 3.68 | 4.05 | ||||||||||
11⁄2 | 1.9 | 0.2 | 3.63 | 80S | 40 | 48.3 | 5.08 | 5.41 | ||||||||||
2 | 2.375 | 0.065 (1) | 1.61 | 5S | 50 | 60.3 | 1.65 (1) | 2.39 | ||||||||||
2 | 2.375 | 0.109 (1) | 2.64 | 10S | 50 | 60.3 | 2.77 (1) | 3.93 | ||||||||||
2 | 2.375 | 0.154 | 3.66 | 40S | 50 | 60.3 | 3.91 | 5.44 | ||||||||||
2 | 2.375 | 0.218 | 5.03 | 80S | 50 | 60.3 | 5.54 | 7.48 | ||||||||||
21⁄2 | 2.875 | 0.083 (1) | 2.48 | 5S | 65 | 73 | 2.11 (1) | 3.69 | ||||||||||
21⁄2 | 2.875 | 0.120 (1) | 3.53 | 10S | 65 | 73 | 3.05 (1) | 5.26 | ||||||||||
21⁄2 | 2.875 | 0.203 | 5.8 | 40S | 65 | 73 | 5.16 | 8.63 | ||||||||||
21⁄2 | 2.875 | 0.276 | 7.67 | 80S | 65 | 73 | 7.01 | 11.41 | ||||||||||
3 | 3.5 | 0.083 (1) | 3.03 | 5S | 80 | 88.9 | 2.11 (1) | 4.52 | ||||||||||
3 | 3.5 | 0.120 (1) | 4.34 | 10S | 80 | 88.9 | 3.05 (1) | 6.46 | ||||||||||
3 | 3.5 | 0.216 | 7.58 | 40S | 80 | 88.9 | 5.49 | 11.29 | ||||||||||
3 | 3.5 | 0.3 | 10.26 | 80S | 80 | 88.9 | 7.62 | 15.27 | ||||||||||
31⁄2 | 4 | 0.083 (1) | 3.48 | 5S | 90 | 101.6 | 2.11 (1) | 5.18 | ||||||||||
31⁄2 | 4 | 0.120 (1) | 4.98 | 10S | 90 | 101.6 | 3.05 (1) | 7.41 | ||||||||||
31⁄2 | 4 | 0.226 | 9.12 | 40S | 90 | 101.6 | 5.74 | 13.57 | ||||||||||
31⁄2 | 4 | 0.318 | 12.52 | 80S | 90 | 101.6 | 8.08 | 18.64 | ||||||||||
4 | 4.5 | 0.083 (1) | 3.92 | 5S | 100 | 114.3 | 2.11 (1) | 5.84 | ||||||||||
4 | 4.5 | 0.120 (1) | 5.62 | 10S | 100 | 114.3 | 3.05 (1) | 8.37 | ||||||||||
4 | 4.5 | 0.237 | 10.8 | 40S | 100 | 114.3 | 6.02 | 16.08 | ||||||||||
4 | 4.5 | 0.337 | 15 | 80S | 100 | 114.3 | 8.56 | 22.32 | ||||||||||
5 | 5.563 | 0.109 (1) | 6.36 | 5S | 125 | 141.3 | 2.77 (1) | 9.46 | ||||||||||
5 | 5.563 | 0.134 (1) | 7.78 | 10S | 125 | 141.3 | 3.40 (1) | 11.56 | ||||||||||
5 | 5.563 | 0.258 | 14.63 | 40S | 125 | 141.3 | 6.55 | 21.77 | ||||||||||
5 | 5.563 | 0.375 | 20.8 | 80S | 125 | 141.3 | 9.53 | 30.97 | ||||||||||
6 | 6.625 | 0.109 (1) | 7.59 | 5S | 150 | 168.3 | 2.77 (1) | 11.31 | ||||||||||
6 | 6.625 | 0.134 (1) | 9.3 | 10S | 150 | 168.3 | 3.40 (1) | 13.83 | ||||||||||
6 | 6.625 | 0.28 | 18.99 | 40S | 150 | 168.3 | 7.11 | 28.26 | ||||||||||
6 | 6.625 | 0.432 | 28.6 | 80S | 150 | 168.3 | 10.97 | 42.56 | ||||||||||
8 | 8.625 | 0.109 (1) | 9.92 | 5S | 200 | 219.1 | 2.77 (1) | 14.78 | ||||||||||
8 | 8.625 | 0.148 (1) | 13.41 | 10S | 200 | 219.1 | 3.76 (1) | 19.97 | ||||||||||
8 | 8.625 | 0.322 | 28.58 | 40S | 200 | 219.1 | 8.18 | 42.55 | ||||||||||
8 | 8.625 | 0.5 | 43.43 | 80S | 200 | 219.1 | 12.7 | 64.64 | ||||||||||
10 | 10.75 | 0.134 (1) | 15.21 | 5S | 250 | 273.1 | 3.40 (1) | 22.61 | ||||||||||
10 | 10.75 | 0.165 (1) | 18.67 | 10S | 250 | 273.1 | 4.19 (1) | 27.79 | ||||||||||
10 | 10.75 | 0.365 | 40.52 | 40S | 250 | 273.1 | 9.27 | 60.31 | ||||||||||
10 | 10.75 | 0.500 (2) | 54.79 | 80S | 250 | 273.1 | 12.70 (2) | 81.56 | ||||||||||
12 | 12.75 | 0.156 (1) | 21 | 5S | 300 | 323.9 | 3.96 (1) | 31.25 | ||||||||||
12 | 12.75 | 0.180 (1) | 24.19 | 10S | 300 | 323.9 | 4.57 (1) | 35.99 | ||||||||||
12 | 12.75 | 0.375 (2) | 49.61 | 40S | 300 | 323.9 | 9.53 (2) | 73.88 | ||||||||||
12 | 12.75 | 0.500 (2) | 65.48 | 80S | 300 | 323.9 | 12.70 (2) | 97.47 | ||||||||||
14 | 14 | 0.156 (1) | 23.09 | 5S | 350 | 355.6 | 3.96 (1) | 34.34 | ||||||||||
14 | 14 | 0.188 (1), (2) | 27.76 | 10S | 350 | 355.6 | 4.78 (1), (2) | 41.36 | ||||||||||
14 | 14 | 0.375 (2) | 54.62 | 40S | 350 | 355.6 | 9.53 (2) | 81.33 | ||||||||||
14 | 14 | 0.500 (2) | 72.16 | 80S | 350 | 355.6 | 12.70 (2) | 107.4 | ||||||||||
16 | 16 | 0.165 (1) | 27.93 | 5S | 400 | 406.4 | 4.19 (1) | 41.56 | ||||||||||
16 | 16 | 0.188 (1), (2) | 31.78 | 10S | 400 | 406.4 | 4.78 (1), (2) | 47.34 | ||||||||||
16 | 16 | 0.375 (2) | 62.64 | 40S | 400 | 406.4 | 9.53 (2) | 93.27 | ||||||||||
16 | 16 | 0.500 (2) | 82.85 | 80S | 400 | 406.4 | 12.70 (2) | 123.31 | ||||||||||
18 | 18 | 0.165 (1) | 31.46 | 5S | 450 | 457 | 4.19 (1) | 46.79 | ||||||||||
18 | 18 | 0.188 (1), (2) | 35.8 | 10S | 450 | 457 | 4.78 (1), (2) | 53.31 | ||||||||||
18 | 18 | 0.375 (2) | 70.65 | 40S | 450 | 457 | 9.53 (2) | . . . | ||||||||||
18 | 18 | 0.500 (2) | 93.54 | 80S | 450 | 457 | 12.70 (2) | . . . | ||||||||||
20 | 20 | 0.188 (1) | 39.82 | 5S | 500 | 508 | 4.78 (1) | 59.32 | ||||||||||
20 | 20 | 0.218 (1), (2) | 46.1 | 10S | 500 | 508 | 5.54 (1), (2) | 68.65 | ||||||||||
20 | 20 | 0.375 (2) | 78.67 | 40S | 500 | 508 | 9.53 (2) | 117.15 | ||||||||||
20 | 20 | 0.500 (2) | 104.23 | 80S | 500 | 508 | 12.70 (2) | 155.13 | ||||||||||
22 | 22 | 0.188 (1) | 43.84 | 5S | 550 | 559 | 4.78 (1) | 65.33 | ||||||||||
22 | 22 | 0.218 (1), (2) | 50.76 | 10S | 550 | 559 | 5.54 (1), (2) | 75.62 | ||||||||||
22 | 22 | . . . | . . . | 40S | 550 | 559 | . . . | . . . | ||||||||||
22 | 22 | . . . | . . . | 80S | 550 | 559 | . . . | . . . | ||||||||||
24 | 24 | 0.218 (1) | 55.42 | 5S | 600 | 610 | 5.54 (1) | 82.58 | ||||||||||
24 | 24 | 0.250 (1) | 63.47 | 10S | 600 | 610 | 6.35 (1) | 94.53 | ||||||||||
24 | 24 | 0.375 (2) | 94.71 | 40S | 600 | 610 | 9.53 (2) | 141.12 | ||||||||||
24 | 24 | 0.500 (2) | 125.61 | 80S | 600 | 610 | 12.70 (2) | 187.07 | ||||||||||
30 | 30 | 0.250 (1) | 79.51 | 5S | 750 | 762 | 6.35 (1) | 118.34 | ||||||||||
30 | 30 | 0.312 (1) | 99.02 | 10S | 750 | 762 | 7.92 (1) | 147.29 | ||||||||||
30 | 30 | . . . | . . . | 40S | 750 | 762 | . . . | . . . | ||||||||||
30 | 30 | . . . | . . . | 80S | 750 | 762 | . . . | . . . | ||||||||||
GENERAL NOTES: (a) 1 in. p 25.4 mm. (b) For tolerances, see para. 6. (c) 1 lb/ft p 1.4895 kg/m. (d) Weights are given in pounds per linear foot (kilograms per meter) and are for carbon steel pipe with plain ends. (e) The different grades of stainless steel permit considerable variations in weight. The ferritic stainless steels may be about 5% less, and the austenitic stainless steels about 2% greater, than the values shown in this Table, which are based on weights for carbon steel. NOTES: (1) These wall thicknesses do not permit threading in accordance with ANSI/ASME B1.20.1. (2) These dimensions do not conform to ASME B36.10M. |
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AMERICAN NATIONAL STANDARDS FOR PRODUCT SIZES | ||||||||||||||||||
The American Society Of Mechanical Engineers | American National Standards Institute | |||||||||||||||||
ASME B36.19M | ANSI B36.19M |
Dimensions and Weights of Welded and Seamless Wrought Steel Pipe | ||||||||||||||||||
Welded and Seamless Wrought Steel Pipe | ASME /ANSI B36.10M-2004 | |||||||||||||||||
SCOPE This Standard covers the standardization of dimensions of welded and seamless wrought steel pipe for high or low temperatures and pressures. The word pipe is used, as distinguished from tube, to apply to tubular products of dimensions commonly used for pipeline and piping systems. Pipe NPS 12 (DN 300) and smaller have outside diameters numerically larger than their corresponding sizes. In contrast, the outside diameters of tubes are numerically identical to the size number for all sizes. |
SIZE The size of all pipe is identified by the nominal pipe size. The manufacture of pipe NPS 1⁄8 (DN 6) to NPS 12 (DN 300), inclusive, is based on a standardized outside diameter (OD). This OD was originally selected so that pipe with a standard OD and having a wall thickness that was typical of the period would have an inside diameter (ID) approximately equal to the nominal size. Although there is no such relation between the existing standard thickness — OD and nominal size — these nominal sizes and standard ODs continue in use as ‘‘standard.’’ The manufacture of pipe NPS 14 (DN 350) and larger proceeds on the basis of an OD corresponding to the nominal size. |
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MATERIALS The dimensional standards for pipe described here are for products covered in ASTM specifications. |
WALL THICKNESS The nominal wall thicknesses are given in Table 1. |
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WEIGHTS The nominal weights of steel pipe are calculated values and are tabulated in Table 1. The nominal plain end weight, in pounds per foot, is calculated using the following formula: W pe p 10.69(D − t)t where D p outside diameter to the nearest 0.001 in. (the symbol D is to be used for OD only in mathematical equations or formulas) W pe p nominal plain end mass, rounded to the nearest 0.01 lb/ft t p specified wall thickness, rounded to the nearest 0.001 in. The nominal plain end mass, in kilograms per meter, is calculated using the following formula: W pe p 0.0246615(D − t)t where D p 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) (the symbol D is to be used for OD only in mathematical equations or formulas) W pe p nominal plain end mass, rounded to the nearest 0.01 kg/m t p specified wall thickness, rounded to the nearest 0.01 mm |
PERMISSIBLE VARIATIONS Variations in dimensions differ depending upon the method of manufacture employed in making the pipe to the various specifications available. Permissible variations for dimensions are indicated in each specification. |
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PIPE THREADS Unless otherwise specified, the threads of threaded pipe shall conform to ANSI / ASME B1.20.1, Pipe Threads, General Purpose (Inch). Schedules 5 and 10 wall thicknesses do not permit threading in accordance with ANSI/ASME B1.20.1. |
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WALL THICKNESS DESIGNATIONS The wall thickness designations Standard, ExtraStrong, and Double Extra-Strong have been commercially used designations for many years. As explained in the Foreword, the Schedule Numbers were subsequently added as a convenient designation for use in ordering pipe. Standard and Schedule 40 are identical for up to NPS 10 (DN 250), inclusive. All larger sizes of Standard have 3⁄8 in. (9.53 mm) wall thicknesses. Extra-Strong and Schedule 80 are identical for up to NPS 8 (DN 200), inclusive. All larger sizes of Extra-Strong have 1⁄2 in. (12.70 mm) wall thicknesses. Pipe of sizes and wall thicknesses other than those of Standard, Extra-Strong, and Double Extra-Strong, and Schedule Number were adopted from API Specification 5L. It was not considered practical to establish Schedule Numbers or new designations for them. |
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WALL THICKNESS SELECTION When the selection of wall thickness depends primarily upon capacity to resist internal pressure under given conditions, the designer shall compute the exact value of wall thickness suitable for conditions for which the pipe is required, as prescribed in detail in the ASME Boiler and Pressure Vessel Code, ASME B31 Code for Pressure Piping, or other similar codes, whichever governs the construction. A thickness shall be selected from Table 1 to suit the value computed to fulfill the conditions for which the pipe is desired. |
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Dimensions and Weights of Welded and Seamless Wrought Steel Pipe | ||||||||||||||||||
U.S. Customary |
Identification [Standard (STD), Extra-Strong (XS), or Double Extra Strong (XXS)] |
Schedule (SCH) No. |
SI Units | |||||||||||||||
Nominal Pipe Size |
Outside Diameter, in. |
Wall Thickness, in |
Plain End Weight, lb/ft |
DN [Note] (2 |
Outside Diameter, mm |
Wall Thickness, mm |
Plain End Mass, kg/m |
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1⁄8 | 0.405 | 0.049 | 0.19 | . . . | 10 | 6 (3) | 10.3 | 1.24 | 0.28 | |||||||||
1⁄8 | 0.405 | 0.057 | 0.21 | . . . | 30 | 6 (3) | 10.3 | 1.45 | 0.32 | |||||||||
1⁄8 | 0.405 | 0.068 | 0.24 | STD | 40 | 6 (3) | 10.3 | 1.73 | 0.37 | |||||||||
1⁄8 | 0.405 | 0.095 | 0.31 | XS | 80 | 6 (3) | 10.3 | 2.41 | 0.47 | |||||||||
1⁄4 | 0.54 | 0.065 | 0.33 | . . . | 10 | 8 (3) | 13.7 | 1.65 | 0.49 | |||||||||
1⁄4 | 0.54 | 0.073 | 0.36 | . . . | 30 | 8 (3) | 13.7 | 1.85 | 0.54 | |||||||||
1⁄4 | 0.54 | 0.088 | 0.43 | STD | 40 | 8 (3) | 13.7 | 2.24 | 0.63 | |||||||||
1⁄4 | 0.54 | 0.119 | 0.54 | XS | 80 | 8 (3) | 13.7 | 3.02 | 0.8 | |||||||||
3⁄8 | 0.675 | 0.065 | 0.42 | . . . | 10 | 10 | 17.1 | 1.65 | 0.63 | |||||||||
3⁄8 | 0.675 | 0.073 | 0.47 | . . . | 30 | 10 | 17.1 | 1.85 | 0.7 | |||||||||
3⁄8 | 0.675 | 0.091 | 0.57 | STD | 40 | 10 | 17.1 | 2.31 | 0.84 | |||||||||
3⁄8 | 0.675 | 0.126 | 0.74 | XS | 80 | 10 | 17.1 | 3.2 | 1.1 | |||||||||
1⁄2 | 0.84 | 0.065 | 0.54 | . . . | 5 | 15 | 21.3 | 1.65 | 0.8 | |||||||||
1⁄2 | 0.84 | 0.083 | 0.67 | . . . | 10 | 15 | 21.3 | 2.11 | 1 | |||||||||
1⁄2 | 0.84 | 0.095 | 0.76 | . . . | 30 | 15 | 21.3 | 2.41 | 1.12 | |||||||||
1⁄2 | 0.84 | 0.109 | 0.85 | STD | 40 | 15 | 21.3 | 2.77 | 1.27 | |||||||||
1⁄2 | 0.84 | 0.147 | 1.09 | XS | 80 | 15 | 21.3 | 3.73 | 1.62 | |||||||||
1⁄2 | 0.84 | 0.188 | 1.31 | . . . | 160 | 15 | 21.3 | 4.78 | 1.95 | |||||||||
1⁄2 | 0.84 | 0.294 | 1.72 | XXS | . . . | 15 | 21.3 | 7.47 | 2.55 | |||||||||
3⁄4 | 1.05 | 0.065 | 0.69 | . . . | 5 | 20 | 26.7 | 1.65 | 1.03 | |||||||||
3⁄4 | 1.05 | 0.083 | 0.86 | . . . | 10 | 20 | 26.7 | 2.11 | 1.28 | |||||||||
3⁄4 | 1.05 | 0.095 | 0.97 | . . . | 30 | 20 | 26.7 | 2.41 | 1.44 | |||||||||
3⁄4 | 1.05 | 0.113 | 1.13 | STD | 40 | 20 | 26.7 | 2.87 | 1.69 | |||||||||
3⁄4 | 1.05 | 0.154 | 1.48 | XS | 80 | 20 | 26.7 | 3.91 | 2.2 | |||||||||
3⁄4 | 1.05 | 0.219 | 1.95 | . . . | 160 | 20 | 26.7 | 5.56 | 2.9 | |||||||||
3⁄4 | 1.05 | 0.308 | 2.44 | XXS | . . . | 20 | 26.7 | 7.82 | 3.64 | |||||||||
1 | 1.315 | 0.065 | 0.87 | . . . | 5 | 25 | 33.4 | 1.65 | 1.29 | |||||||||
1 | 1.315 | 0.109 | 1.41 | . . . | 10 | 25 | 33.4 | 2.77 | 2.09 | |||||||||
1 | 1.315 | 0.114 | 1.46 | . . . | 30 | 25 | 33.4 | 2.9 | 2.18 | |||||||||
1 | 1.315 | 0.133 | 1.68 | STD | 40 | 25 | 33.4 | 3.38 | 2.5 | |||||||||
1 | 1.315 | 0.179 | 2.17 | XS | 80 | 25 | 33.4 | 4.55 | 3.24 | |||||||||
1 | 1.315 | 0.25 | 2.85 | . . . | 160 | 25 | 33.4 | 6.35 | 4.24 | |||||||||
1 | 1.315 | 0.358 | 3.66 | XXS | . . . | 25 | 33.4 | 9.09 | 5.45 | |||||||||
11⁄4 | 1.66 | 0.065 | 1.11 | . . . | 5 | 32 | 42.2 | 1.65 | 1.65 | |||||||||
11⁄4 | 1.66 | 0.109 | 1.81 | . . . | 10 | 32 | 42.2 | 2.77 | 2.69 | |||||||||
11⁄4 | 1.66 | 0.117 | 1.93 | . . . | 30 | 32 | 42.2 | 2.97 | 2.87 | |||||||||
11⁄4 | 1.66 | 0.14 | 2.27 | STD | 40 | 32 | 42.2 | 3.56 | 3.39 | |||||||||
11⁄4 | 1.66 | 0.191 | 3 | XS | 80 | 32 | 42.2 | 4.85 | 4.47 | |||||||||
11⁄4 | 1.66 | 0.25 | 3.77 | . . . | 160 | 32 | 42.2 | 6.35 | 5.61 | |||||||||
11⁄4 | 1.66 | 0.382 | 5.22 | XXS | . . . | 32 | 42.2 | 9.7 | 7.77 | |||||||||
11⁄2 | 1.9 | 0.065 | 1.28 | . . . | 5 | 40 | 48.3 | 1.65 | 1.9 | |||||||||
11⁄2 | 1.9 | 0.109 | 2.09 | . . . | 10 | 40 | 48.3 | 2.77 | 3.11 | |||||||||
11⁄2 | 1.9 | 0.125 | 2.37 | . . . | 30 | 40 | 48.3 | 3.18 | 3.53 | |||||||||
11⁄2 | 1.9 | 0.145 | 2.72 | STD | 40 | 40 | 48.3 | 3.68 | 4.05 | |||||||||
11⁄2 | 1.9 | 0.2 | 3.63 | XS | 80 | 40 | 48.3 | 5.08 | 5.41 | |||||||||
11⁄2 | 1.9 | 0.281 | 4.86 | . . . | 160 | 40 | 48.3 | 7.14 | 7.25 | |||||||||
11⁄2 | 1.9 | 0.4 | 6.41 | XXS | . . . | 40 | 48.3 | 10.15 | 9.55 | |||||||||
2 | 2.375 | 0.065 | 1.61 | . . . | 5 | 50 | 60.3 | 1.65 | 2.39 | |||||||||
2 | 2.375 | 0.083 | 2.03 | . . . | . . . | 50 | 60.3 | 2.11 | 3.03 | |||||||||
2 | 2.375 | 0.109 | 2.64 | . . . | 10 | 50 | 60.3 | 2.77 | 3.93 | |||||||||
2 | 2.375 | 0.125 | 3.01 | . . . | 30 | 50 | 60.3 | 3.18 | 4.48 | |||||||||
2 | 2.375 | 0.141 | 3.37 | . . . | . . . | 50 | 60.3 | 3.58 | 5.01 | |||||||||
2 | 2.375 | 0.154 | 3.66 | STD | 40 | 50 | 60.3 | 3.91 | 5.44 | |||||||||
2 | 2.375 | 0.172 | 4.05 | . . . | . . . | 50 | 60.3 | 4.37 | 6.03 | |||||||||
2 | 2.375 | 0.188 | 4.4 | . . . | . . . | 50 | 60.3 | 4.78 | 6.54 | |||||||||
2 | 2.375 | 0.218 | 5.03 | XS | 80 | 50 | 60.3 | 5.54 | 7.48 | |||||||||
2 | 2.375 | 0.25 | 5.68 | . . . | . . . | 50 | 60.3 | 6.35 | 8.45 | |||||||||
2 | 2.375 | 0.281 | 6.29 | . . . | . . . | 50 | 60.3 | 7.14 | 9.36 | |||||||||
2 | 2.375 | 0.344 | 7.47 | . . . | 160 | 50 | 60.3 | 8.74 | 11.11 | |||||||||
2 | 2.375 | 0.436 | 9.04 | XXS | . . . | 50 | 60.3 | 11.07 | 13.44 | |||||||||
21⁄2 | 2.875 | 0.083 | 2.48 | . . . | 5 | 65 | 73 | 2.11 | 3.69 | |||||||||
21⁄2 | 2.875 | 0.109 | 3.22 | . . . | . . . | 65 | 73 | 2.77 | 4.8 | |||||||||
21⁄2 | 2.875 | 0.12 | 3.53 | . . . | 10 | 65 | 73 | 3.05 | 5.26 | |||||||||
21⁄2 | 2.875 | 0.125 | 3.67 | . . . | . . . | 65 | 73 | 3.18 | 5.48 | |||||||||
21⁄2 | 2.875 | 0.141 | 4.12 | . . . | . . . | 65 | 73 | 3.58 | 6.13 | |||||||||
21⁄2 | 2.875 | 0.156 | 4.53 | . . . | . . . | 65 | 73 | 3.96 | 6.74 | |||||||||
21⁄2 | 2.875 | 0.172 | 4.97 | . . . | . . . | 65 | 73 | 4.37 | 7.4 | |||||||||
21⁄2 | 2.875 | 0.188 | 5.4 | . . . | 30 | 65 | 73 | 4.78 | 8.04 | |||||||||
21⁄2 | 2.875 | 0.203 | 5.8 | STD | 40 | 65 | 73 | 5.16 | 8.63 | |||||||||
21⁄2 | 2.875 | 0.216 | 6.14 | . . . | . . . | 65 | 73 | 5.49 | 9.14 | |||||||||
21⁄2 | 2.875 | 0.25 | 7.02 | . . . | . . . | 65 | 73 | 6.35 | 10.44 | |||||||||
21⁄2 | 2.875 | 0.276 | 7.67 | XS | 80 | 65 | 73 | 7.01 | 11.41 | |||||||||
21⁄2 | 2.875 | 0.375 | 10.02 | . . . | 160 | 65 | 73 | 9.53 | 14.92 | |||||||||
21⁄2 | 2.875 | 0.552 | 13.71 | XXS | . . . | 65 | 73 | 14.02 | 20.39 | |||||||||
3 | 3.5 | 0.083 | 3.03 | . . . | 5 | 80 | 88.9 | 2.11 | 4.52 | |||||||||
3 | 3.5 | 0.109 | 3.95 | . . . | . . . | 80 | 88.9 | 2.77 | 5.88 | |||||||||
3 | 3.5 | 0.12 | 4.34 | . . . | 10 | 80 | 88.9 | 3.05 | 6.46 | |||||||||
3 | 3.5 | 0.125 | 4.51 | . . . | . . . | 80 | 88.9 | 3.18 | 6.72 | |||||||||
3 | 3.5 | 0.141 | 5.06 | . . . | . . . | 80 | 88.9 | 3.58 | 7.53 | |||||||||
3 | 3.5 |