Design Requirements For Ductile Iron Pipe Fittings

The buried depth of the pipeline should be determined according to the degree of freezing, the intersection of external load and other pipelines and other factors. Under normal circumstances, the buried depth can be 0.2 meters below the freezing line, and the following conditions are met: when the pipe diameter is greater than 100mm, the minimum buried depth of the pipe top is 1.20 meters.

The bottom width of the design groove is generally the outer diameter of the pipe plus 0.5 meters, and the excavation slope is determined according to the soil conditions. The only difference is "λ" (hydraulic friction coefficient), that is, the head loss can be calculated according to the local resistance loss of the original cast iron pipe.

The appearance of ductile iron pipe provides a new type of pipe with excellent performance for my country's water supply industry. In order to better apply ductile iron pipes in engineering, designers and construction personnel should be familiar with the characteristics of ductile iron pipes, constantly find problems and solve them, so as to make the design more reasonable and the construction more standardized, so that the new pipes can play a better role in the water supply project. big effect.