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Product Description:


1) The standard of pipe: ISO2531:1998, K9

2) Effective length: 6m

3) Inner cement line: Portland cement line as per ISO4179

4) Zinc coating: at least 130g/m2 as per ISO8179

5) Bitumen painting: at least 70um as per ISO8179

6) With 100% quantity of NBR ring, or SBR ring, or EPDM ring as per ISO4633

7) DN80mm-800mm

8) High strength, lighter than grey iron, good corrosion resistance, no furring, small flow resistance, easy fixing, long life tome about 100 yeas

9) Produced by Hangzhou chunfeng machine

10) Checked by automatic inspection equipment

11) Composition:

Chemical composition

Chemical composition

Ductile Cast Iron Pipe (%)

Grey iron pipe (%)

Steel pipe (%)























12) Feature:

Mechanical properties

Ductile Cast Iron Pipe

Grey Iron Pipe

Steel Pipe

Tensile Strength(Mpa)




Yield Strength(Mpa)


No Confirmation

No Confirmation

Bending Strength(Mpa)




Elongation (%)




Brinell Hardness(HBS)



About 140

13) T type mechanical joint

14) Packing: in bulk or container

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Q:Steel plastic pipe, ductile iron pipe, steel pipe difference
The utility model has the advantages of wide application range, more connecting modes, suitable for most occasions, good sealing property, proper material selection and anticorrosion treatment, and can greatly increase the corrosion resistance.
Q:Ductile iron and gray iron is what are the advantages and disadvantages of it
Comparison of nodular cast iron and cast steelThe strength of nodular cast iron is comparable to that of cast steel. Ductile iron has higher yield strength, the lowest yield strength is 40K, while the yield strength of cast steel is only 36k. In most municipal applications, such as water, brine, steam, ductile iron has more corrosion resistance and oxidation resistance than cast steel. Because of the spheroidal graphite microstructure of nodular cast iron, nodular cast iron is superior to cast steel in reducing vibration ability, so it is more beneficial to reduce stress. An important reason for choosing ductile iron is that ductile iron costs less than cast steel. The low cost of ductile iron makes this material more popular, more efficient and less costly for ductile iron.
Q:What is the ductile cast iron pipe
Cast iron pipe is called a coiled pipe, one is the mouth, and the other is the flange. It is often used in the joint of the cast iron pipe valve, and is often used in conjunction with the second pipe (plug pipe coil)
Q:Why is the sound speed of nodular cast iron lowered after heat treatment?
This may be the material microstructure changes after heat treatment, is generally the pearlite content increased, the available change heat treatment and then check the corresponding microstructure and corresponding measuring sound velocity adjustment, such as annealing, normalizing etc..
Q:How can the cast iron pipe of the ductile iron pipe be repaired?
First of all, to see whether the manufacturers do elbow pressure did not reach, if it is. That can only be replaced, if not, with a cast iron electrode welding repair.By the way, ductile iron can only be welded and not welded.
Q:Ductile iron gears are generally treated without heat treatment
Certainly. At the very least, the casting must be annealed and other heat treatment according to the requirement of use
Q:How many casting methods are there in ductile iron casting? A 60*6 discus can not have sand holes. Its surface is smooth. What process can be used to make it?
Is it better to use precoated sand, but only a little higher cost?.
Q:Advantages and disadvantages of ductile iron pipes?
The ductile iron pipe has a single length of 6 meters and a large wall thickness. The cast iron tube has a single branch length of 3 meters and a thinner wall thickness.
Q:How many degrees can the ductile iron pipe be each?
In the ferrite and pearlite matrix on the distribution of a certain number of spheroidal graphite, according to the nominal diameter and the elongation of different microstructure of ferrite and pearlite in different proportions of small caliber pearlite percentage is generally not more than 20%, large diameter of the general control in about 25%.
Q:If the ductile iron pipe is broken, can we use rush repair?
These specifications are also based on the outer diameter of the tube. In daily life, we may also encounter a pipeline rupture, or when it is on the road to repair, excavator accidentally hit PE, PPR water supply and drainage pipeline, as long as a little, can be used to repair the pipeline repair section.

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