Properties of copper tubing

Standard size

Outside diameter

Type

Internal diameter

Flow area

in

cm

ft

cm

ft2

cm2

1/4

0.375

0.953

K

0.02542

0.775

0.00051

0.4717

L

0.02625

0.801

0.00054

0.5039

3/8

0.5

1.270

K

0.03350

1.022

0.00088

0.8203

L

0.03583

1.092

0.00101

0.9366

M

0.03750

1.142

0.00110

1.024

1/2

0.625

1.588

K

0.04392

1.340

0.00152

1.410

L

0.04542

1.384

0.00162

1.505

M

0.04742

1.446

0.00177

1.642

5/8

0.75

1.905

K

0.05433

1.657

0.00232

2.156

L

0.05550

1.691

0.00242

2.246

3/4

0.875

2.222

K

0.06208

1.892

0.00303

2.811

L

0.06542

1.994

0.00336

3.123

M

0.06758

2.060

0.00359

3.333

1

1.125

2.858

K

0.08292

2.528

0.00540

5.019

L

0.08542

2.604

0.00573

5.326

M

0.08792

2.680

0.00607

5.641

1 1/4

1.375

3.493

K

0.1038

2.163

0.00845

7.858

L

0.1054

3.213

0.00873

8.108

M

0.1076

3.279

0.00909

8.444

1 1/2

1.625

4.128

K

0.1234

3.762

0.01196

11.12

L

0.1254

3.824

0.01235

11.48

M

0.1273

3.880

0.01272

11.82

Standard size

Outside diameter

Type

Internal diameter

Flow area

in

cm

ft

cm

ft2

cm2

2

2.125

5.398

K

0.1633

4.976

0.02093

11.95

L

0.1654

5.042

0.02149

19.97

M

0.1674

5.102

0.02701

20.44

2 1/2

2.625

6.668

K

0.2029

6.186

0.03234

30.05

L

0.2054

6.262

0.03314

30.80

M

0.2079

6.338

0.03395

40.17

3

3.125

7.938

K

0.2423

7.384

0.04609

42.82

L

0.2454

7.480

0.04730

43.94

M

0.2484

7.572

0.04847

45.03

3 1/2

3.625

9.208

K

0.2821

8.598

0.06249

58.06

L

0.2854

8.700

0.06398

59.45

M

0.2883

8.786

0.06523

60.63

4

4.125

10.48

K

0.3214

9.800

0.08114

75.43

L

0.3254

9.922

0.08317

77.32

M

0.3279

9.998

0.08445

78.51

5

5.125

13.02

K

0.4004

12.21

0.1259

117.1

L

0.4063

12.38

0.1296

120.5

M

0.4089

12.47

0.1313

122.1

6

6.125

15.56

K

0.4784

14.58

0.1798

167.0

L

0.4871

14.85

0.1863

173.2

M

0.4901

14.39

0.1886

175.3

8

8.125

20.64

K

0.6319

19.26

0.3136

291.5

L

0.6438

19.62

0.3255

302.5

M

0.6488

19.78

0.3306

307.2