Properties of wrought steel and iron pipe

Nominal pipe size

Outside diameter

Schedule

Internal diameter

Flow area

in

cm

ft

cm

ft2

cm2

1/8

0.405

1.029

40 (STD)

0.02242

0.683

0.000395

0.3664

80 (XS)

0.01792

0.547

0.000252

0.2350

1/4

0.54

1.372

40 (STD)

0.03033

0.924

0.000723

0.6706

80 (XS)

0.02517

0.768

0.000497

0.4632

3/8

0.675

1.714

40 (STD)

0.04108

1.252

0.001326

1.2330

80 (XS)

0.03525

1.074

0.000976

0.9059

1/2

0.84

2.134

40 (STD)

0.05183

1.580

0.002110

1.961

80 (XS)

0.0455

1.386

0.001626

1.508

3/4

1.05

2.667

40 (STD)

0.06867

2.093

0.003703

3.441

80 (XS)

0.06183

1.883

0.003003

2.785

1

1.315

3.340

40 (STD)

0.08742

2.664

0.006002

5.574

80 (XS)

0.07975

2.430

0.004995

5.083

1 1/4

1.66

4.216

40 (STD)

0.1150

3.504

0.010390

9.643

80 (XS)

0.1065

3.246

0.008908

8.275

1 1/2

1.9

4.826

40 (STD)

0.1342

4.09

0.01414

13.13

80 (XS)

0.1250

3.81

0.01227

11.40

Nominal pipe size

Outside diameter

Schedule

Internal diameter

Flow area

in

cm

ft

cm

ft2

cm2

2

2.375

6.034

40 (STD)

0.1723

5.252

0.02330

21.66

80 (XS)

0.1616

4.926

0.02051

19.06

2 1/2

2.875

7.303

40 (STD)

0.2058

6.271

0.03325

30.89

80 (XS}

0.1936

5.901

0.02943

27.35

3

3.5

8.890

40 (STD)

0.2557

7.792

0.05134

47.69

80 (XS)

0.2417

7.366

0.04587

42.61

3 1/2

4

10.160

40 (STD)

0.2957

9.012

0.06866

63.79

80 (XS)

0.2803

8.544

0.06172

57.33

4

4.5

11.430

40 (STD)

0.3355

10.23

0.08841

82.19

80 (XS)

0.3198

9.718

0.07984

74.17

5

5.563

14.130

40 (STD)

0.4206

12.82

0.1389

129.1

80 (XS)

0.4011

12:22

0.1263

117.3

6

6.625

16.828

40 (STD)

0.5054

15.41

0.2006

186.5

80 (XS)

0.4801

14.64

0.1810

168.3

8

8.625

21.908

40 (STD)

0.6651

20.27

0.3474

322.7

80 (XS)

0.6354

19.37

0.3171

294.7