DI Pipes in Water Infrastructure,Ductile Iron Pipe

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100 m
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10000 m/month

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DI Pipes in Water Infrastructure

Ductile iron pipe is a pipe made of ductile iron commonly used for potable water transmission and distribution.



1. ISO 2531 & EN 545 Standard


2. K8, K9, K10 C Class


3. Internal Linings: Portland Cement 


4. External Coating: Bitumen/ Epoxy


5. Joint Type: T Joint, K Joint, N1 Joint, MJ Joint and Flange Joint.

DN(mm)OD(mm)Wall Thickness(mm)Weight of Socket (kg)Unit Weight for Barrel (kg/m)Total Weight(kg)
(Standard Length=6000mm)



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Q:Qianwei County ductile iron pipe which tool to use cutting convenience?
Cutting the ductile iron pipe by grinding is grinding and cutting the ductile iron tube continuously by grinding wheel until it breaks. To cut ductile iron pipes by grinding cutting method, the cutting parts should be crossed at first so as to avoid deviation during cutting. Place the drawn ductile iron tube in the cutting machine and fix the ductile iron tube and clamp it with a built-in clamp. Next, start the cutting machine and gradually press the handle of the cutting machine. The grinding wheel cuts into the ductile iron tube until the ductile iron pipe is cut off. When exerting pressure on the handle, do not force too hard at once, otherwise it will cause the grinding wheel to break. In the operation of the machine, the operator must not stand on the side of the grinding wheel, so as to avoid accidents. When the wheel appears in cutting, vibration, shaking, uneven phenomenon, should immediately stop the operation, check whether there is the wheel gap, if damaged, must be promptly replaced, to ensure safety and normal. Good cutting ductile cast iron pipe section, if there is to prevent the use of burrs, can be removed by grinding or machining file.
Q:How much is the working pressure of ductile iron pipe used in water supply pipe and how is MPa determined?
Upstairs are positive solutions, but now outdoor buried water pipes are using steel wire mesh skeleton, plastic composite pipe instead of ductile iron pipeThe general pressure grades used for water supply pipes are 1.0MPa and 1.6Mpa
Q:Is ductile iron pipe breakable?
The ductile iron pipe has many uses in our city construction, for our city water supply, gas supply and so on. But ductile iron pipes are also very useful in sewage disposal. As we all know, ductile iron pipe has many excellent properties, such as high strength, corrosion resistance, high pressure resistance, low accident rate, long service life and Gao Yanshen rate. It is an excellent water supply pipe.
Q:How can the three pipes of ductile iron leak?
The raw material used in RE can be installed in the thread, can also be used on the same thread AB, re install is also available, but it is hard to remove.
Q:What effect does magnesium play in nodular cast iron?
Magnesium can be graphite precipitated in spherical form.But the specific mechanism is not clear, and now it is still debated in the academic circles.In addition, magnesium and sulfur generate MgS, which removes S from molten iron, which impedes the formation of spheroidal graphite.Therefore, Mg has two functions to eliminate the influence of S on Nodular Iron and promote the precipitation of graphite in spherical form.
Q:What is the difference between flexible joint mechanism and seismic cast iron pipe DN100 and ductile iron pipe?
The ball compressive strength of ductile iron pipe is much higher than that of cast iron pipes, buried in the ground, the car is not easy to be crushed.
Q:Is the spigot and socket connection of the ductile iron tube reversed?
The three pass joint is formed by flattening a tube blank larger than three through diameter to approximately three through the diameter and opening a hole at the point of the branch pipe;
Q:The difference between spheroidal graphite cast iron pipe and HDPE water supply pipe
Because the HDPE pipe flexibility is good, in the face of obstacles or trench excavation in straight pipe laying conditions can not directly, but the ductile iron pipe can not, it is sometimes necessary to use the words such as elbow or tube fittings to connect the transition. In this way, the HDPE pipe is superior to the ductile iron pipe in the pipe fittings.
Q:How long is the service life of the cast iron pipe, and the time of use of ductile iron pipes?
When it comes to the service life of nodular cast iron, its maintenance is essential for its long service life. Then, the focus of the maintenance of ductile iron pipe is to pay special attention to, will affect the long-term use of ductile iron pipes, stable operation of socket, row, etc., we should make efforts to these aspects of the mouth without debris. Make sure that the rubber ring of the ductile iron pipe has been smashed with a rubber hammer, and it is not twisted or twisted, and it is uniformly stuck in the slot. Ductile iron pipe in the maintenance process, because of the pneumatic tube axis is buried into the ground, so in the face of a tilt angle of the time, we must be careful, if the resistance is too large, will not force the excavation, in order to prevent the distortion of the rubber ring.
Q:Method for cutting large diameter ductile iron pipe
When the ratio of oxygen to acetylene is 1 to 1.2, the flame produced is called neutral flame, also known as normal flame. It consists of flame core, inner and outer flame: near the welding nozzle at the flame core, a bright white; followed by the flame, a blue purple, the highest temperature, about 3150 DEG C, from the front cone at 2 ~ 4mm, and the application of welding wire to the workpiece; the outer flame is orange red. Neutral flame is a flame commonly used in welding. It is used to weld low carbon steel, medium carbon steel, alloy steel, copper and aluminum alloy.

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