Section 5 Pipe and Tube Sizes
Section 5 Pipe and Tube Sizes
Section 5 Pipe and Tube Sizes
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<strong>Pipe</strong> <strong>and</strong> <strong>Tube</strong> <strong>Sizes</strong><br />
<strong>Pipe</strong> <strong>and</strong> <strong>Tube</strong> for Specific Applications<br />
Chemical <strong>and</strong> Petrochemical <strong>Pipe</strong> <strong>and</strong> <strong>Tube</strong><br />
This heading covers a broad spectrum of industries including chemical, petrochemical, offshore, process, power<br />
generation, nuclear, mining <strong>and</strong> mineral/metal processing, pulp <strong>and</strong> paper.<br />
❍ Materials <strong>and</strong> Manufacture. Applicable ASTM<br />
st<strong>and</strong>ards for pipe <strong>and</strong> tubing specify the<br />
materials <strong>and</strong> manufacturing requirements<br />
(including testing) as suitable for particular<br />
applications.<br />
❍ <strong>Sizes</strong>. ANSI/ASME pipe sizes (see page 5-2) or<br />
ISO sizes (see page 5-8) are most commonly<br />
specified for these applications. Fittings <strong>and</strong><br />
flanges, etc, are available for corresponding tube<br />
sizes.<br />
❍ Tolerances <strong>and</strong> Cut lengths. These are<br />
specified in the applicable ASTM or ISO<br />
specifications.<br />
Heat exchanger tube - principal SWG sizes<br />
Outside Diameter<br />
22<br />
(0.711 mm)<br />
20<br />
(0.914 mm)<br />
18<br />
(1.218 mm)<br />
❍ Other requirements such as bevelled or<br />
threaded ends may be specified. Weld bevels are<br />
covered in <strong>Section</strong> 6 <strong>and</strong> pipe threads are<br />
covered in <strong>Section</strong> 1.<br />
❍ Heat Exchanger <strong>and</strong> Condenser <strong>Tube</strong>s.<br />
Stainless steel tubes used for heat exchangers<br />
<strong>and</strong> condensers may be specified using BWG or<br />
SWG wall thicknesses. Typical sizes are detailed<br />
in the following two tables. Refer to the underlined<br />
sizes on page 5-10 <strong>and</strong> following for stainless<br />
steel ‘Steel tubes for boilers, superheaters <strong>and</strong><br />
heat exchangers’ as specified in ISO 1129.<br />
St<strong>and</strong>ard Wire Gauge (SWG)<br />
16<br />
(1.625 mm)<br />
14<br />
(2.032 mm)<br />
12<br />
(2.641 mm)<br />
11<br />
(2.946 mm)<br />
Notes<br />
1 Conventional weights are quoted, assuming the tube is specified as average wall.<br />
Add 10% to the weight for minimum wall tube.<br />
Multiply quoted weights by 1.014 for austenitic <strong>and</strong> duplex steels, by 0.985 for ferritic <strong>and</strong> martensitic steels.<br />
- Refer to page 5-7 for a full list of SWG numbers <strong>and</strong> equivalent wall thicknesses.<br />
10<br />
(3.251 mm)<br />
in mm<br />
Weight, kg/m (average wall1 )<br />
1<br />
/4 0.250 6.350 - 0.124 0.157 0.192 - - - -<br />
5<br />
/16 0.313 7.950 - 0.161 0.205 0.257 - - - -<br />
3<br />
/8 0.375 9.525 - 0.197 0.253 0.321 0.381 - - -<br />
1<br />
/2 0.500 12.700 0.213 0.270 0.350 0.451 0.543 0.665 0.720 -<br />
5<br />
/8 0.625 15.875 0.270 0.342 0.447 0.580 0.704 0.875 0.954 -<br />
3<br />
/4 0.750 19.050 - 0.415 0.544 0.709 0.866 1.09 1.19 1.29<br />
7<br />
/8 0.875 22.225 0.383 0.488 0.641 0.838 1.03 1.30 1.42 1.55<br />
1 1.000 25.400 0.440 0.560 0.738 0.967 1.19 1.51 1.66 1.80<br />
11 /4 1.250 31.750 0.553 0.706 0.931 1.23 1.51 1.93 2.13 2.32<br />
11 /2 1.500 38.100 0.666 0.851 1.13 1.48 1.84 2.35 2.59 2.84<br />
1 3 /4 1.750 44.450 0.779 0.996 1.32 1.74 2.16 2.77 3.06 3.35<br />
2 2.000 50.800 0.892 1.14 1.51 2.00 2.48 3.19 3.53 3.87<br />
2 1 /2 2.500 63.500 - - 1.90 2.52 3.13 4.03 4.47 4.91<br />
3 3.000 76.200 - - 2.29 3.03 3.77 4.87 5.40 5.94<br />
3 1 /2 3.500 88.900 - - 2.67 3.55 4.42 5.70 6.34 6.97<br />
4 4.000 101.60 - - 3.06 4.07 5.07 6.54 7.28 8.01<br />
5-25
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