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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:It's not easy to drill ductile iron with cobalt high speed steel bit. Please help to point it out
The material can be annealed and the process is simple, that is, heating the workpiece and cooling it naturally. In this way, the hardness of the workpiece can be reduced.
Q:Deep well spiral iron pipe, or ductile iron tube?
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:How much pressure can the ductile iron pipe socket meet?
After all, he is not steel, strength is low, toughness is poor. But a short period of about 100kg, things should be no problem.
Q:How can the ductile iron pipe depress the elbow so as to prevent it from being opened?
Elbow materials are cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, nonferrous metals and plastics.
Q:The design uses water supply ductile iron pipe, PE corrosion protection pipe, HDPE pipe, please ask that good? What's the price of the two?
Now the mainstream is PE pipe, ductile iron pipe has been going out.
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:Nodular cast iron, heat treatment process and so on
High temperature graphitization annealing was adopted to eliminate the chill, and 900-950 and 2-4H obtained ferrite structure
Q:The difference between spheroidal graphite cast iron pipe and HDPE water supply pipe
As the HDPE pipe is made of hot melt connection, the construction is more difficult, and the installation cost is about 40% higher than that of the nodular cast iron pipe.
Q:Ductile iron pipe, socket connection, pipe length, you can cut open it?
The cutting length is 4 meters from the jack. Among them, DN300 below 100% can be cut, DN350 above shear ratio is 10%, cut the small head to do chamfering treatment.
Q:Ductile iron pipes lined with cement mortar in the water (living water, water in the 6.9-7.3) in the early pH, why pH increased? How to solve this problem?
The basic characteristic of ductile iron pipe of ordinary cement mortar lining the inner wall of the tube will make passivation, have antiseptic effect, but in the initial stage of using cement mortar lining will be the alkali component separation, so that the pH value of water increased to influence water quality

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