Ductile iron pipes design importance of ductile cast iron
pipe in now life is have big market, because of the importance of design.
Pipeline embedment depth should according to the degree of freezing, external load and other factors such as pipeline crossing.
In general, buried depth below the frost line 0.
2 meters, and in accordance with the following conditions: when the pipe diameter greater than 100 mm, tube top minimum buried deeply 1.
Design of groove bottom width is commonly with pipe diameter 0.
5 meters, and according to the soil condition, to determine the excavation slope (
, draw the groove section.
Ductile iron pipes and other pipes, uniform flow of frictional head loss for hf = lambda/dv2/2 g, the difference is only 'lambda' (
Hydraulic friction coefficient)
, the head loss can be calculated on the original cast iron pipe and local resistance loss.
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