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Calculation of Circumferential Bending Strength of Ductile Iron Pipe
For ductile iron pipes, the strength of the pipe material should meet the stress requirements of the pipe wall only under the action of external loads. The hoop bending strength of ductile iron pipes shall meet the requirements of the following formula: KrRf≤Rmax In the formula Kr — hoop be...Read more -
Radial Deformation Control of Ductile Iron Pipe
Radial deformation should be calculated as ductile iron pipes are only subjected to external loads. The backfill load can be calculated according to the following formula: Pe=0.001γH In the formula Pe —– backfill load, MPa; γ—-weight of backfill soil, kN/m3; H —- the dista...Read more -
Calculation method for ground vehicle loads on ductile iron pipes
The effect of ground vehicle load on ductile iron pipelines, including various vehicles traveling on the ground, its load class, specification and type should be determined according to the requirements of ground operation. The standard value of the vertical pressure transmitted to the top of the...Read more -
How to arrange the ancillary facilities of ductile iron pipelines
According to the requirements of ductile iron pipeline layout, operation management and hydraulic transition process analysis results, determine the setting, type and quantity of flow regulating and pressure regulating facilities, maintenance valves, drain valves, ventilation valves and other fac...Read more