Ductile Iron Pipes
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Technical Details

Properties of Ductile Iron Pipe

Properties Ductile Iron Pipe
Tensile strength Min. 420 MPa
Elongation (min) at break 10%
Modulus of Elasticity 1.7 x 1010 Kg/M2
Hardness Max. 230 BHN

Pipe Dimension

Basic Dimension of pipes
Class K7 & K9

Basic Dimension of Pipes Thickness of Ductile Iron Pipes
   
      PRESSURE CLASS THICKNESS CLASS
Nominal
Dia.
DN
mm
External
Dia.
DE
mm
Tol. on
DE
mm
Preferred
'C' class
Preferred
  class Nom
Thickness
Nominal
Thickness
K9
mm
ECL
Works Test
Pressure
K9
(Kg/cm)
80 98 +1/-2.7 C40 4.4 6.0 60
100 118 +1/-2.8 C40 4.4 6.0 60
150 170 +1/-2.9 C40 4.5 6.0 60
200 222 +1/-3 C40 4.7 6.3 60
250 274 +1/-3.1 C40 5.5 6.8 60
300 326 +1/-3.3 C40 6.2 7.2 60
350 378 +1/-3.4 C30 6.3 7.7 50
400 429 +1/-3.5 C30 6.5 8.1 50
450 480 +1/-3.6 C30 6.9 8.6 50
500 532 +1/-3.8 C30 7.5 9.0 50
600 635 +1/-4 C30 8.7 9.9 50
700 738 +1/4.3 C25 8.8 10.8 42
800 842 +1/4.5 C25 9.6 11.7 42
900 945 +1/-4.8 C25 10.6 12.6 42
1000 1048 +1/-5 C25 11.6 13.5 42

Note : Preferred 'C' class as per ISO2531/2009

Dimensions of Flange

DN PN-10 PN-16
D E C b n Dia (d) Metric D E C b n Dia (d) Metric
Nom.
Dia.
Out
side
Dia
Dia. of
raised
Face
Pitch
Circle
Dia.
Flange
Width
No.
of
Bolts
Bolt
Hole
Dia.
Bolt
Size
Out
side
Dia
Dia. of
raised
Face
Pitch
Circle
Dia.
Flange
Width
No.
of
Bolts
Bolt
Hole
Dia.
Bolt
Size
80 200 132 160 16.0 8 19 M16 200 132 160 16.0 8 19 M16
100 220 156 180 16.0 8 19 M16 220 156 180 16.0 8 19 M16
125 250 184 210 16.0 8 19 M16 250 184 210 16.0 8 19 M16
150 285 211 240 16.0 8 23 M20 285 211 240 16.0 8 23 M20
200 340 266 295 17.0 12 23 M20 340 266 295 17.0 12 23 M20
250 395 319 350 19.0 12 23 M20 400 319 355 19.0 12 28 M24
300 445 370 400 20.5 12 23 M20 455 370 410 20.5 12 28 M24
350 505 429 460 20.5 16 23 M20 520 429 470 22.5 16 28 M24
400 565 480 515 20.5 16 28 M24 580 480 525 24.0 16 31 M27
450 615 530 565 21.0 20 28 M24 640 548 585 26.0 20 31 M27
500 670 582 620 22.5 20 28 M24 715 609 650 27.5 20 34 M30
600 780 682 725 25.0 20 31 M27 840 720 770 31.0 20 37 M33
700 895 794 840 27.5 24 31 M27 910 794 840 34.5 24 37 M33
750 960 857 900 29.0 24 31 M27 970 857 900 36.0 24 37 M33
800 1015 901 950 30.0 24 34 M30 1025 901 950 38.0 24 40 M36
900 1115 1001 1050 32.5 28 34 M30 1125 1001 1050 41.0 28 40 M36
1000 1230 1112 1160 35.0 28 37 M33 1255 1112 1170 45.0 28 43 M39