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Ductile Iron Pipe Dimensions

Ductile Iron Plain End Pipe Dimensions and Ductile Iron Pipe Dimensions For Sewage

Dimensions of Ductile Iron Centrifugally Cast, K Class Ductile Iron Pipe Dimensions, C Class Ductile Iron Pipe Dimensions and Di Pipe Tolerance

K Class Ductile Iron Pipe Dimensions

Dimension of Socket and Spigot Pipes Nominal Dia. DN (mm) External Dia. DE (mm) Tol. On DE (mm) *Nominal Thickness K7 (mm) ECL Works Test Pressure K7 (Kg/cm²) *Nominal Thickness K9 (mm) ECL Works Test Pressure K9 (Kg/cm²) Allowable Deflection (Degree)
80 98 +1/-2.8   40 6.0 60 5
100 118 +1/-2.8 40 6.0 60 5
150 170 +1/-2.9 40 6.0 60 5
200 222 +1/-3 6.0 40 6.3 60 4
250 274 +1/-3.1 6.0 40 6.8 60 4
300 326 +1/-3.3 6.0 40 7.2 60 4
350 378 +1/-3.4 6.0 32 7.7 50 3
400 429 +1/-3.5 6.3 32 8.1 50 3
450 480 +1/-3.6 6.6 32 8.6 50 3
500 532 +1/-3.8 7.0 32 9.0 50 3
600 635 +1/-4 7.7 32 9.9 50 3
700 738 +1/-4.3 9.0 25 10.8 42 2
800 842 +1/-4.5 10.4 25 11.7 42 2
900 945 +1/-4.8 11.2 25 12.6 42 1.5
1000 1048 +1/-5 12.0 25 13.5 42 1.5

*As per ISO 2531 – 1998/EN 545 – 2007    *As per ISO 2531- 1998/EN 545 – 2007

C Class Ductile Iron Pipe Dimensions

        Preferred Class #    
Dimension of Socket & Spigot Pipes Nominal Dia. DN (mm) External Dia. DE (mm) Tol. On DE (mm) Pressure Class Nominal Thickness (mm) Minimum Thickness* (mm) Allowable Deflection (Degree)
80 98 +1/-2.8 C40 4.4 3.0 5
100 118 +1/-2.8 C40 4.4 3.0 5
150 170 +1/-2.9 C40 4.5 3.0 5
200 222 +1/-3 C40 4.7 3.1 4
250 274 +1/-3.1 C40 5.5 3.9 4
300 326 +1/-3.3 C40 6.2 4.6 4
350 378 +1/-3.4 C30 6.3 4.7 3
400 429 +1/-3.5 C30 6.5 4.8 3
450 480 +1/-3.6 C30 6.9 5.1 3
500 532 +1/-3.8 C30 7.5 5.6 3
600 635 +1/-4 C30 8.7 6.7 3
700 738 +1/-4.3 C25 8.8 6.8 2
800 842 +1/-4.5 C25 9.6 7.5 2
900 945 +1/-4.8 C25 10.6 8.4 1.5
1000 1048 +1/-5 C25 11.6 9.3 1.5

#As per ISO 2531 – 2009         *As per EN 545 – 2010

Ductile Iron Pipe Dimensions For Sewage

Dimensions of Socket & Spigot Pipes       Pressure Sewer  
Nominal Dia.  (mm) External Dia. (DE) (mm) Tol. on DE (mm) Nom Thickness (mm)** Nom Thickness (mm)# Allowable Deflection (Degree)
80 98 +1/-2.8 4.4 4.8 5
100 118 +1/-2.8 4.4 4.8 5
150 170 +1/-2.9 4.5 4.8 5
200 222 +1/-3 4.7 4.9 4
250 274 +1/-3.1 4.9 5.3 4
300 326 +1/-3.3 5.1 6.6 4
350 378 +1/-3.4 5.7 6.0 3
400 429 +1/-3.5 6.3 6.3 3
450 480 +1/-3.6 6.4 6.7 3
500 532 +1/-3.8 6.5 7.0 3
600 635 +1/-4 7.5 7.7 3
700 738 +1/-4.3 8.5 9.6 2
800 842 +1/-4.5 9.6 10.4 2
900 945 +1/-4.8 10.6 11.2 1.5
1000 1048 +1/-5 11.6 12.0 1.5

#As per ISO 7186 – 2011 *As per EN 598 – 2007

Wall Pipe

Ductile Iron Plain End Pipe Dimensions

Dimensions of Ductile Iron Centrifugally Cast

Size
(in.)
T lbs
Thickness
in.
Weight
lb/ft
T lbs
Thickness
in.
Weight
(lb/ft)
4 0.25 10.9 0.32 13.8
6 0.25 16.0 0.34 21.4
8 0.25 21.1 0.36 30.1
10 0.26 27.1 0.38 39.2
12 0.28 34.8 0.40 49.2
14 0.28 40.4 0.42 60.1
16 0.3 49.3 0.43 70.1
18 0.31 57.2 0.44 80.6
20 0.33 67.5 0.45 91.5
24 0.33 80.8 0.47 114.4
30 0.34 103.5 0.51 154.4
36 0.38 138.5 0.58 210.3
42 0.41 173.8 0.65 274.0
48 0.46 222.6 0.72 346.6
54 0.51 279.7 0.81 441.9
60 0.54 317.0 0.83 485.0
64 0.56 350.5 0.87 542.0

AWWA C151 – minimum thickness classes in this standard are Class 350 for 4”–12” sizes, Class 250 for 14”-20” sizes, Class 200 for 24” and Class 150 for 30”–64” sizes.

AWWA C115 – minimum thicknesses for all sizes of ductile iron pipe for threading on flanges.

Wall pipe is normally fabricated of Special Class 53 thickness ductile iron pipe but may be furnished with minimum classes unless threaded flanges or threaded MJ bells are included or unless specified otherwise.

Ductile iron pipe dimensions

Dimension of Socket and Spigot Ends Ductile Iron Pipes

Nominal Dia of Pipe ‘DN’ External Diameter ‘DE’ Barrel Wall Thickness ‘e’
K7 & K9 K7 K9
mm mm mm mm
80 98 5.0 6.0
100 118 5.0 6.0
125 144 5.0 6.0
150 170 5.0 6.0
200 222 5.0 6.3
250 274 5.3 6.8
300 326 5.6 7.2
350 378 6.0 7.7
400 429 6.3 8.1
450 480 6.6 8.6
500 532 7.0 9.0
600 635 7.7 9.9
700 738 9.0 10.8
750 790 9.7 11.3
800 842 10.4 11.7
900 945 11.2 12.6
1000 1048 12.0 13.5
1100 1152 14.4 14.4
1200 1255 15.3 15.3

(Source: IS 8329:2000)

Ductile Iron Fabricated Pipe Dimensions

Size
(in.)
Pressure
Rating
(psi)
Nominal
Wall
Thickness
(in.)
Pipe
OD
(in.)
Fastite & MJ-Fab MJ & MJ-Fab Flex-Ring & MJ-Fab
Laying Length Weight
(Max. L.L.)1
Laying Length Weight
(Max. L.L.)1
Laying Length Weight
(Max. L.L.)1
Min. (in.) Max (ft.in.) Length
(lbs.)
Min. (in.) Max. (ft.in.) Length (lbs.) Min. (in.) Max. (ft.in.) Length (lbs.)
4 350 0.32 4.80 2 15/16 19’6" 325 4 19’6" 295 2 14/16 19’6" 295
6 350 0.34 6.90 3 1/8 19’6" 460 4 19’6" 460 2 14/16 19’6" 460
8 350 0.36 9.05 4 3/4 19’6" 645 6 19’6" 645 3 3/4 19’6" 645
10 350 0.38 11.10 4 3/4 19’6" 840 6 19’6" 840 2 3/4 19’6" 840
12 350 0.40 13.20 5 3/4 19’6" 1055 6 19’6" 1055 3 3/4 19’6" 1055
14 350 0.42 15.30 4 1/4 19’6" 1315 7 19’6" 1315 3 1/8 19’6" 1315
16 350 0.43 17.40 5 1/4 19’6" 1545 5 19’6" 1545 5 1/8 19’6" 1545
18 350 0.44 19.50 5 19’6" 1785 6 19’6" 1785 4 5/16 19’6" 1785
20 350 0.45 21.60 6 19’6" 2030 6 19’6" 2030 5 5/16 19’6" 2030
24 350 0.47 25.80 7 19’6" 2585 11 19’6" 2470 6 1/2 19’6" 2585

1 For 4"-24" sizes 19’-6".

Pipe is available with greater wall thicknesses than shown. Thicknesses correspond to special thickness class 53.

Any length between minimum and maximum shown can be furnished. Tolerance on length is ± .25".

Socket depths for threaded-on mechanical joint bells (MJ-Fab) are 2.88" for 4"-12" sizes and 4" for 14"-24" sizes.

Ductile iron pipe General dimensions

The principal ductile iron pipes and fittings dimensions and tolerances are standardized:
– nominal wall thickness (pipes and fittings)
– nominal cement mortar lining thickness (pipes)
– pipe length
– pipe external barrel diameter.

Ductile iron pipe nominal thickness

Ductile iron Pipes

For DN 60 to 300, nominal thickness of the ductile iron is the one for class 40, C40, defined by EN 545.
For DN 350 to 600, NATURAL pipes are class 30, C30.
For DN>700, the nominal thickness of the ductile iron for pipes and fittings is calculated as a function of the DN.
For a given DN, the external diameter of a pipe must be identical, whatever the wall thickness class or pressure.

Tolerances for iron thickness

Tolerances are given depending on the device, pipes or fittings, and DN in the table opposite, which gives the tolerance less (for the calculation of the minimum thickness.)
Standards EN 545 and ISO 2531 do not stipulate an upper limit.
This thickness complies with EN 545 and ISO 2531.

Tolerances for iron thickness

Type of piece Nominal wall  thickness
(mm)
Tolerance in mm
Spun pipes
class 40
and class 30
≤ 5.0 – 1.3
> 5.0 – (1.3 + 0.001 DN)
Spun pipes
class K
≤ 6.0 – 1.3
> 6.0 – (1.3 + 0.001 DN)
Fittings ≤ 7.0 – 2.3
> 7.0 – (2.3 + 0.001 DN)

Pipe cement mortar lining thickness & dimensions

DN Lining thickness
Nominal Tolerance*
mm mm
60 to 300 4.0 – 1.5
350 to 600 5.0 – 2.0
700 to 1200 6.0 – 2.5
1400 to 2000 9.0 – 3.0
* There is no upper limit.

Ductile Iron Pipe working length

The pipe working length is used for linear calculations. It is the length of the pipe excluding the socket. Socket pipes have the following working lengths:

DN Pipe working length
STANDARD EXPRESS UNIVERSAL and PAMLOCK
60 6.00 -
80 6.00 5.97
100 6.00 5.97
125 6.00 5.97
150 6.00 5.97
200 6.00 5.97
250 6.00 5.97
300 6.00 5.97
350 6.00 5.97
400 6.00 5.97
450 6.00 5.97
500 6.00 5.97
600 6.00 5.97
700 6.95 5.97
800 6.95 6.89
900 6.95 6.87
1000 6.95 6.88
1100 8.19 -
1200 8.18 8.15
1400 8.17 8.12
1500 8.16 8.11
1600 8.16 8.11
1800 8.14 8.08
2000 8.13 NC

The tolerance for these lengths is ± 30 mm.
The percentage of pipes delivered with a shorter working length must not exceed 10 % of the total number for each diameter of socket and spigot pipes supplied (Standards EN 545).

Laid length

To calculate the number of pipes needed to build a pipeline of given length, it is necessary to increase the working length of each pipe gap which must be reserved in the back of fitting after assembling the joint.

Laid length = working length + gap

Barrel external diameter

The external diameter of the spigot end of socket pipes is indicated in the corresponding product sheets.