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Ductile Iron
Pipes for Water Conveyance |
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Product Standards : |
BS EN 545 : 2002.
ISO : 2531:1998.
IS 8329 : 2000. |
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| DN mm |
External Dia. DE |
Iron thickness ‘e’ for K9. |
Minimum Works test Pressure Bars (K9) |
Internal Pressure Rating (K9) |
Nominal mm |
Tolerance mm |
Nominal mm |
Tolerance mm |
PFA Max. Bars |
PMA Max. Bars |
PEA Max. Bars |
80 |
98.0 |
+1
to –2.2 |
6.00 |
-1.3 |
50 |
64 |
77 |
96 |
100 |
118.0 |
+1
to –2.8 |
6.00 |
-1.3 |
50 |
64 |
77 |
96 |
150 |
170.0 |
+1
to –2.9 |
6.00 |
-1.5 |
50 |
64 |
77 |
96 |
200 |
222.0 |
+1
to – 3.0 |
6.30 |
-1.5 |
50 |
62 |
74 |
79 |
250 |
274.0 |
+1
to –3.1 |
6.80 |
-1.6 |
50 |
54 |
65 |
70 |
300 |
326.0 |
+1
to –3.3 |
7.20 |
-1.6 |
50 |
49 |
59 |
64 |
350 |
378.0 |
+1
to – 3.4 |
7.70 |
-1.7 |
40 |
45 |
54 |
59 |
400 |
429.0 |
+1
to – 3.5 |
8.10 |
-1.7 |
40 |
42 |
51 |
56 |
450 |
480.0 |
+1
to – 3.6 |
8.60 |
-1.8 |
40 |
40 |
48 |
53 |
500 |
532.0 |
+1
to –3.8 |
9.00 |
-1.8 |
40 |
38 |
46 |
51 |
600 |
635.0 |
+1
to –4.0 |
9.90 |
-1.9 |
40 |
36 |
43 |
48 |
700 |
738.0 |
+1
to –4.3 |
10.80 |
-2.0 |
32 |
34 |
41 |
76 |
800 |
842.0 |
+1
to –4.5 |
11.70 |
-2.1 |
32 |
32 |
38 |
43 |
900 |
945.0 |
+1
to –4.8 |
12.60 |
-2.2 |
32 |
31 |
37 |
42 |
1000 |
1048.0 |
+1
to –5.0 |
13.50 |
-2.3 |
32 |
30 |
36 |
41 |
| 1100 |
1152 |
+1
to -6.0 |
14.40 |
2.4 |
25 |
29 |
35 |
40 |
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- Pipes are supplied in standard length of 5.5
/ 6.0 meters. Short length pipes as per respective standards can also be supplied
- In addition to class K9 pipes, Electrosteel
supplies K7,K8 and K10 classes of pipes
- The thickness can be determined by the
formula – e = K ( 0.5 + 0.00 I DN )
- PFA (allowable operating pressure) is the
internal pressure, exclusive of surge, that a component can safely withstand in permanent
service.
- PMA (allowable maximum operating pressure)
is the maximum internal pressure, including surge, that a component can safely withstand in
service.
- PEA (allowable test pressure) is the maximum
hydrostatic pressure that a newly installed component can withstand for a relatively short
duration, when either fixed above ground level or laid and back-filled underground in order to
measure the integrity and leak tightness of the pipe.
DI Pipes for
Sewerage Applications >>
Ductile Iron Flanged pipes>> |
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