Ductile Iron Pipe Icon
Unrestrained Joint Pipe

Fastite Joint Pipe

The AMERICAN Fastite joint, furnished in sizes 4” to 64”, is a flexible, rubber ring compression-type joint used extensively in underground service for water, sewage or other liquids. It has the proven long-life and high-strength qualities inherent in pipe produced centrifugally in accordance with AWWA C151.

In addition, this significant AMERICAN development, a dependable, single gasket, push-on type joint meeting the requirements of AWWA C111, affords the customer lower joint cost and time-saving advantages in installation.


Fastite joint pipe provides exceptional strength and flexibility and has been widely accepted by engineers, contractors and utility officials since the 1950s. For added flexibility during construction, and for possible elimination of bends, a liberal 5° allowable deflection is standard in all sizes through 30", offering 21" offset in a 20’ length of pipe. Liberal deflection can also be provided in larger diameter pipe with standard and special Fastite deflection bells.

The patented AMERICAN Fastite joint embodies many advanced design features and is rated for a water working pressure of 350 psi. For specific conditions, ductile iron piping with this joint has been approved for higher pressure conditions. The socket, which is scientifically designed with two gasket recesses and a dividing buttress, is manufactured to close tolerances so that the gasket is self-centered, securely confined, and firmly compressed for a permanent, tight, trouble-free joint. The Fastite joint seal, bubble-tight under vacuum and external pressure, becomes even tighter with the application of internal pressure due to a specially designed wedging surface in the socket.

The Fastite joint pipe bell opening is slightly tapered to provide easy entry of the pipe end; the flared socket design permits liberal joint deflection. The plain end of the pipe is tapered or rounded to facilitate entry into the bell and self-centering in the gasket. On pipe cut in the field, the plain end can be easily beveled and smoothed by the use of a portable grinding wheel or other suitable apparatus. A stripe is painted on the plain end of AMERICAN Fastite joint pipe to provide a visual means of checking the joint alignment and to assure proper insertion.

Read More
contact sales

Special Thickness Classes


These are special thickness classes as shown in AWWA C150 and C151. AMERICAN can furnish any thickness in between these special thicknesses if deemed desirable for major projects.

Special classes are most appropriately used for some threaded, grooved, or ball and socket pipes or for extraordinary design conditions, and they are generally less available than standard pressure class pipe.

For pressure rating and maximum depth of cover capabilities of special thickness classes, check with AMERICAN. These capabilities can be estimated by comparing metal thickness and capabilities of those of pressure classes, or calculated by using the design formulas shown in AWWA C150.

NOMINAL WALL THICKNESSES FOR SPECIAL THICKNESS CLASSES

ANSI/AWWA C150/A21.50 ANSI/AWWA C151/A21.51

Size (in.)

Outside
Diameter
(in.)

Special Thickness Classes – Wall Thickness (in.)1

50

51

52

53

54

55

56

4

4.80

-

0.26

0.29

0.32

0.35

0.38

0.41

6

6.90

0.25

0.28

0.31

0.34

0.37

0.40

0.43

8

9.05

0.27

0.30

0.33

0.36

0.39

0.42

0.45

10

11.10

0.29

0.32

0.35

0.38

0.41

0.44

0.47

12

13.20

0.31

0.34

0.37

0.40

0.43

0.46

0.49

14

15.30

0.33

0.36

0.39

0.42

0.45

0.48

0.51

16

17.40

0.34

0.37

0.40

0.43

0.46

0.49

0.52

18

19.50

0.35

0.38

0.41

0.44

0.47

0.50

0.53

20

21.60

0.36

0.39

0.42

0.45

0.48

0.51

0.54

24

25.80

0.38

0.41

0.44

0.47

0.50

0.53

0.56

30

32.00

0.39

0.43

0.47

0.51

0.55

0.59

0.63

36

38.30

0.43

0.48

0.53

0.58

0.63

0.68

0.73

42

44.50

0.47

0.53

0.59

0.65

0.71

0.77

0.83

48

50.80

0.51

0.58

0.65

0.72

0.79

0.86

0.93

54

57.56

0.57

0.65

0.73

0.81

0.89

0.97

1.05

WALL THICKNESSES AND WEIGHTS FOR SPECIAL THICKNESS CLASSES

ANSI/AWWA C151/A21.51

Size in.

Thickness Class

Wall Thickness in.

Weight in Pounds

Per Foot Plain End

Per Foot Inc. Bell

Per Nominal Length2

4

51

0.26

11.3

11.7

234

4

52

0.29

12.6

12.9

259

4

53

0.32

13.8

14.1

283

4

54

0.35

15

15.3

307

4

55

0.38

16.1

16.5

331

4

56

0.41

17.3

17.6

354

6

50

0.25

16

16.5

335

6

51

0.28

17.8

18.4

370

6

52

0.31

19.6

20.2

405

6

53

0.34

21.4

22

445

6

54

0.37

23.2

23.8

480

6

55

0.4

25

25.5

515

6

56

0.43

26.7

27.3

550

8

50

0.27

22.8

23.7

475

8

51

0.3

25.2

26.1

525

8

52

0.33

27.7

28.6

575

8

53

0.36

30.1

31

625

8

54

0.39

32.5

33.4

670

8

55

0.42

34.8

35.8

720

8

56

0.45

37.2

38.1

765

10

50

0.29

30.1

31.6

635

10

51

0.32

33.2

34.6

695

10

52

0.35

36.2

37.6

755

10

53

0.38

39.2

40.6

815

10

54

0.41

42.1

43.6

875

10

55

0.44

45.1

46.5

935

10

56

0.47

48

49.4

995

12

50

0.31

38.4

39.9

800

12

51

0.34

42

43.6

875

12

52

0.37

45.6

47.2

950

12

53

0.4

49.2

50.7

1020

12

54

0.43

52.8

54.3

1090

12

55

0.46

56.3

57.9

1160

12

56

0.49

59.9

61.4

1235

14

50

0.33

47.5

49.5

990

14

51

0.36

51.7

53.7

1075

14

52

0.39

55.9

57.9

1160

14

53

0.42

60.1

62.1

1245

14

54

0.45

64.2

66.2

1325

14

55

0.48

68.4

70.4

1410

14

56

0.51

72.5

74.5

1495

16

50

0.34

55.8

58

1160

16

51

0.37

60.6

62.8

1260

16

52

0.4

65.4

67.6

1355

16

53

0.43

70.1

72.3

1450

16

54

0.46

74.9

77.1

1545

16

55

0.49

79.7

81.9

1640

16

56

0.52

84.4

86.6

1735

18

50

0.35

64.4

68

1365

18

51

0.38

69.8

73.4

1470

18

52

0.41

75.2

78.8

1580

18

53

0.44

80.6

84.2

1690

18

54

0.47

86

89.6

1795

18

55

0.5

91.3

95

1905

18

56

0.53

96.7

100.3

2010

20

50

0.36

73.5

77.5

1555

20

51

0.39

79.5

83.5

1675

20

52

0.42

85.5

89.5

1795

20

53

0.45

91.5

95.5

1915

20

54

0.48

97.5

101.5

2035

20

55

0.51

103.4

107.5

2155

20

56

0.54

109.3

113.3

2270

24

50

0.38

92.9

97.7

1960

24

51

0.41

100.1

104.9

2100

24

52

0.44

107.3

112.1

2245

24

53

0.47

114.4

119.2

2390

24

54

0.5

121.6

126.4

2535

24

55

0.53

128.8

133.5

2675

24

56

0.56

135.9

140.7

2820

30

50

0.39

118.5

126.7

2540

30

51

0.43

130.5

138.7

2780

30

52

0.47

142.5

150.7

3020

30

53

0.51

154.4

162.6

3260

30

54

0.55

166.3

174.5

3495

30

55

0.59

178.2

186.4

3735

30

56

0.63

190

198.2

3970

36

50

0.43

156.5

167

3345

36

51

0.48

174.5

185

3705

36

52

0.53

192.4

202.9

4065

36

53

0.58

210.3

220.8

4425

36

54

0.63

228.1

238.6

4780

36

55

0.68

245.9

256.4

5140

36

56

0.73

263.7

274.2

5495

42

50

0.47

198.9

214.7

4295

42

51

0.53

224

239.8

4795

42

52

0.59

249.1

264.9

5295

42

53

0.65

274

289.8

5795

42

54

0.71

298.9

314.7

6295

42

55

0.77

323.7

339.5

6790

42

56

0.83

348.4

364.2

7285

48

50

0.51

246.6

266.1

5320

48

51

0.58

280

299.5

5990

48

52

0.65

313.4

332.9

6655

48

53

0.72

346.6

366.1

7320

48

54

0.79

379.8

399.3

7985

48

55

0.86

412.9

432.4

8645

48

56

0.93

445.9

465.4

9305

54

50

0.57

312.3

338.1

6760

54

51

0.65

355.6

381.4

7625

54

52

0.73

398.8

424.6

8490

54

53

0.81

441.9

467.7

9355

54

54

0.89

484.9

510.7

10215

54

55

0.97

527.7

553.5

11070

54

56

1.05

570.4

596.2

11925

These are Special Thickness Classes as shown in AWA C150 and C151. They were previously designated standard thickness classes. AMERICAN can furnish any thickness in between these special thicknesses if deemed economical for major projects.

Note: 60" and 64" sizes are not available in special classes.
Note: Dimensions, lengths, weights, etc., are subject to change at our option.

Product Line Information

Domestic Certification
Submittals
Pipe Manual
Project Mgt/Customer Service
Standards
Aerial view of iron pipes

Contact Sales

Reach out to our sales team for more product information.
contact sales

Today's Infrastructure Solutions in the U.S. and Around the Globe.

About Us
American Mark