Benefits

FLOW
The larger than nominal diameters and internal lining smoothness (C140) of Ductile Iron Pipe significantly reduces pumping costs. The comparisons of actual flow areas of commonly used pipe is shown on the table. The fact that more water can be moved through a Ductile Iron Pipe for a given amount of energy, may make it possible to specify a smaller nominal diameter to accomplish a required flow, or result in significantly reduced pumping costs.

FLOW AREA COMPARISON COMMONLY USED PRESSURE PIPE (Sq. In.)

Diameter

in mm
Cement
Lined
D.I.		 DR 18
PVC		 DR 25
PVC		 Series
160
HDPE		 Series
100
HDPE		 0.25"
Wall
Steel		 Conc.
Cyl.
Pres.
8 200 56 51 54 38 45 52 -
12 300 123 108 116 83 98 118 -
18 450 274 236 253 164 194 240 254
24 600 489 413 443 293 345 458 452
36 900 1092 - 973 680 780 990 1018

 

LOW MAINTENANCE COSTS
Design engineers can predict ordinary earth loads, traffic loads and internal pressures to be encountered by underground pipe. But there are unpredictable influences on pipe loadings: swell pressures in certain clay soils, subsidence of support soil, uneven settlement, excessive water hammer, adjacent construction influences, vibrations, seismic activity, and frost penetration loads. Ductile Iron Pipe, because of its unusually high strength, ductility and impact resistance, has a proven history of handling all of these factors better than any other underground pipe material, thereby greatly reducing maintenance costs.

HIGH PRESSURE APPLICATIONS
Since 1975, 12" (300mm) Ductile Iron Pipe has been serving Manti, Utah, at an internal pressure of 1,100 psi without a single failure. This is more than three times the rated working pressure of 350 psi stated in ANSI/AWWA C150/A21.50 Standard. For high pressure applications, please contact Canada Pipe for information on maximum allowable pressures. In most cases, pressure capacity will greatly exceed pressure rating in the standard tables. For example, a 12" (300mm) Class 50 Ductile Iron Pipe with a nominal wall thickness of .31 inches, can withstand internal pressures up to 1,610 psi (based on minimum yield strength with all minus tolerances removed from the thickness). This 12" (300mm) pipe would not actually fail until the internal pressure exceeded 2,300 psi (based on minimum ultimate strength of 60,000 psi).

CUTTING AND TAPPING
Ductile Iron Pipe is completely field efficient. It can be cut to fit without loss of joint tightness and tapped safely and securely for residential services without the use of tapping saddles, which means even greater savings.

LOCATING
Underground Ductile Iron Pipe can be easily located with standard pipe locating equipment - an advantage in emergency situations.