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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:Is the fire hose capable of using rapid repair joints?
Installation joint. Insert the socket into the socket to coincide with the central axis of the pipe or pipe to be joined. Use a guide chain to tighten the pipe member until the pipe mouth enters between the two white lines.
Q:What quota can be used for the installation of DN300 ductile iron pipes?
Moreover, the ball tube is generally 5.5 meters long or 6 meters, if the length of the bridge is too long, to use the casing, the casing must also be fixed, and so on.
Q:What are the meanings of cast iron pipe wall thicknesses LA, A and B respectively?
According to its manufacturing methods can be divided into: sand, centrifugal pipe, straight pipe, continuous cast iron pipe and sand pipe.According to the material used, it can be divided into gray iron pipe, nodular cast iron pipe and high silicon iron pipe.1 、 water supply cast iron pipe:The use of cast iron cast iron water pipe of No. 18 above by adding nodulizer, after centrifugal ductile cast iron pipe by centrifugal casting machine, the performance of ductile iron pipe with nature, iron and steel, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises water, gas, oil etc.. Water supply pipe is the first choice, with high cost performance.2 、 sand casting centrifugal cast iron pipe:The sand casting centrifugal cast iron pipe is made of gray cast iron. It is suitable for the transportation of pressure water such as water and gas.
Q:Does centrifugal cast iron pipe work well with lining cement? Will it scale and breed bacteria?
The situation in use abroad seems. It is considered that the corrosion of the inner wall of the centrifugal centrifugal ductile iron pipe and the rupture of the pipe are easy to occur when the content of chloride ion exceeds 5O0PPm in the pipe laying environment. This is mainly because, because the cement paste protection layer is the late spraying construction, it is not good to combine with the prefabricated core tube. It often causes water or moisture to seep in and causes oxidation and corrosion of the prestressing steel bars, resulting in fracture. The adhesive interface between cement mortar and centrifugally cast iron pipe is not reasonable. Because of the water absorption of cement, when the water enters the pipe, it is easy to destroy the interface and corroded the inner wall of the centrifugally cast iron pipe. Because it is a brittle material, it is easy to cause sudden accidents.
Q:What is cast iron pipe, specification for cast iron pipe?
Ductile iron pipes are more expensive, but the production methods are different.
Q:What material is the cutting tool for ductile iron?
The tool manufacturers so much, such as: Santak, Kenna, widia, Dai Jie, Walter, MITSUBISHI, Toshiba, ISCA, TaeguTec, Zhuzhou, each of the grades are not the same. But according to your specific processing workpiece and processing time and precision requirements, can choose the most suitable tool.
Q:What's the difference between grey cast iron pipe and ductile iron pipe?
Spheroidal graphite cast iron and ordinary cast iron contain graphite monomer, that is to say, cast iron is a mixture of iron and graphite. The graphite in ordinary cast iron is flaky, and the strength of graphite is very low, so there are many flakes of voids in the cast iron, so the strength of ordinary cast iron is lower and more brittle. Graphite in graphite cast iron is spherical, equivalent to the existence of many spherical voids in cast iron. The effect of spherical voids on the strength of cast iron is much smaller than that of sheet voids, so the strength of nodular cast iron is much higher than that of ordinary cast iron.
Q:Is there a kind of pipe called lined ductile iron pipe? Seeking manufacturers?
Yes, ductile pipe is divided into two kinds, one is the ductile cast iron pipe pipe socket (socket ductile pipe), which is mainly used for water supply system, namely the fire water, because of ductile iron pipe with pressure, 10kg, 12kg, 16kg. Pressure small price, a few cheaper, because pure in the production process of different, 1. sand mill 2. metal water cooling, like water, the basic is 16kg.
Q:How to properly maintain FRP pipes
The wall of the pipe is smoothReduce flow resistance, increase flow speed and reduce energy consumption. Compared with the same size steel pipe, the flow rate of the same volume can be increased by about 10%, and no fouling and long-term use can not reduce the flow rate. The protection of cables in interference and heavy corrosion environment is better.
Q:Ductile iron pipe length is generally much
6 meters, the bassoon is also 8 meters!

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