What is pipe size?



Q.
  What is pipe size? 
A. Pipe size does not refer to the inside or outside diameters (ID or OD) of a pipe fitting or pipe itself.  It is the accepted industry designation, not an actual size.  For example, all pipe and male pipe fittings with a 1/2” pipe size have an actual OD measurement of  0.840”. 

When matching pipe OD for male threads and pipe ID for female threads, they must be the same pipe size. 

Note:  The terms pipe size, IPS, and nominal pipe size all mean the same thing.

Schedule 40 PVC Dimensions

 Nom. Pipe Size (in)

 O.D.

 Average I.D.

 Min. Wall

 Nom. Wt./Ft.

 Max. W.P. PSI**

1/8"

0.405

0.249

0.068

0.051

810

1/4"

0.540

0.344

0.088

0.086

780

3/8"

0.675

0.473

0.091

0.115

620

1/2"

0.840

0.602

0.109

0.170

600

3/4"

1.050

0.804

0.113

0.226

480

1"

1.315

1.029

0.133

0.333

450

1-1/4"

1.660

1.360

0.140

0.450

370

1-1/2"

1.900

1.590

0.145

0.537

330

2"

2.375

2.047

0.154

0.720

280

2-1/2"

2.875

2.445

0.203

1.136

300

3"

3.500

3.042

0.216

1.488

260

3-1/2"

4.000

3.521

0.226

1.789

240

4"

4.500

3.998

0.237

2.118

220

5"

5.563

5.016

0.258

2.874

190

6"

6.625

6.031

0.280

3.733

180

8"

8.625

7.942

0.322

5.619

160

10"

10.750

9.976

0.365

7.966

140

12"

12.750

11.889

0.406

10.534

130

14"

14.000

13.073

0.437

12.462

130

16"

16.000

14.940

0.500

16.286

130

18"

18.000

16.809

0.562

20.587

130

20"

20.000

18.743

0.593

24.183

120

24"

24.000

22.544

0.687

33.652

120

Schedule 80 PVC Dimensions

 Nom. Pipe Size (in)

 O.D.

 Average I.D.

 Min. Wall

 Nom. Wt./Ft.

 Max. W.P. PSI**

1/8"

.405

.195

0.095

0.063

1230

1/4"

.540

.282

0.119

0.105

1130

3/8"

.675

.403

0.126

0.146

920

1/2"

.840

.526

0.147

0.213

850

3/4"

1.050

.722

0.154

0.289

690

1"

1.315

.936

0.179

0.424

630

1-1/4"

1.660

1.255

0.191

0.586

520

1-1/2"

1.900

1.476

0.200

0.711

470

2"

2.375

1.913

0.218

0.984

400

2-1/2"

2.875

2.290

0.276

1.500

420

3"

3.500

2.864

0.300

2.010

370

3-1/2"

4.000

3.326

0.318

2.452

350

4"

4.500

3.786

0.337

2.938

320

5"

5.563

4.768

0.375

4.078

290

6"

6.625

5.709

0.432

5.610

280

8"

8.625

7.565

0.500

8.522

250

10"

10.750

9.493

0.593

12.635

230

12"

12.750

11.294

0.687

17.384

230

14"

14.000

12.410

0.750

20.852

220

16"

16.000

14.213

0.843

26.810

220

18"

18.000

16.014

0.937

33.544

220

20"

20.000

17.814

1.031

41.047

220

24"

24.000

21.418

1.218

58.233

210

source: www.harvel.com

Article Title:
What is pipe size?
Article Summary:
Definition of pipe size.
Article Date:
7/9/2003
Article ID:
624
14 user(s) found this article useful. Was this article useful to you?
Share

Information disclaimer:

The information contained in this article is for general information purposes only. The information is provided by United States Plastic Corp. and while we endeavor to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.

In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of materials, time or profits arising out of, or in connection with, the use of this information.