ISO2531 Standard Cement Lined Pipe Ductile Iron Zinc Bitumen K9 Class

Basic Information
Place of Origin: CHINA
Certification: ISO2531,EN545/598,WRAS,SGS
Model Number: DN80-2600
Minimum Order Quantity: 10TONS
Packaging Details: bundled with steel belts or in bulk
Payment Terms: L/C, T/T
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Detail Information
Material: Ductile Iron Joint Type: T-type,Restrained / No Restrained
Application: Water Shape: Round
Surface Treatment: Spraying Zinc Product: Pipe Fittings
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Product Description

ISO2531 Standard Cement Lined Pipe Ductile Iron Zinc Bitumen K9 Class


Cement Lined Ductile Iron Pipe overview:

Ductile cast iron is kind of alloy of iron, carbon and silicon, in which graphite exists in the type of spherical, generally the size of graphite is 6-7 class, and spheriodization grade of the pipe should be controlled 1-3 class(spheroidization rate is not below 80%). Thus after spheroidization, ductile cast iron possesses the nature of iron as well as the characteristic of steel. After annealing, its microstructure contains ferrite and a little pearlite possessing excellent mechanical properties. When used under the conditions for which they are designed, in permanent or in temporary contact with water intended for human consumption, ductile iron pipes, fittings and their joints shall not have detrimental effects on the properties of that water for its intended use. Ductile iron pipeline systems, including pipes, fittings, accessories and joints, consist of various materials. When used for conveying water intended for human consumption, the materials in contact with the water shall meet the relevant requirements of the national standards or regulations in the country of use with respect to effect on water quality.



1) The standard of pipe: ISO 2531, EN545 , EN598.

2) Pipe class: K9, C40, C30, C25, etc.

3) Pipe joint: push-on joint(Tyton joint), K type joint, self-restrained joint

4) Effective length: in general, the pipe length is 6m for bulk shipment and 5.7m for container shipment.

5) Rubber gasket materials shall conform to the requirements of ISO 4633 for water applications. When materials other than rubber are necessary (e.g. high-temperature flanged joints), they shall conform to the appropriate International Standards.


Chemical composition: (%)

a) C: 3.5 - 4.0

b) Si: 1.9 - 2.6

c) Mn:0.15 - 0.45

c) P: <0.06

d) S: <0.02


Packing: bundled with steel belts or in bulk

Shipment: in bulk or container


Mechnical behavior:

  Ductile cast iron pipe Common ash cast pipe Steel pipe
Tensile strength(MPa) ≥420 150--260 ≥400
Ductility(%) <1000(mm) ≥10 Neglected ≥18
>1000(mm) ≥7 Neglected ≥18
Brinell hardness(HBS) ≤230 ≤230 about 140
After annealing,the microstructure of ductile cast iron pipes is ferrite and a little pearlite,possessing excellent mechanical properties.
Other performance:
The hydraulic test pressure of the ductile cast iron pipes is as follows:
Nominal diameter(mm)  Hydraulic test pressure(MPa)
80≤DN≤300 5.0
350≤DN≤600 4.0
700≤DN≤1000 3.2
1100≤DN≤2000 2.5



Much of the production of ductile iron is in the form of ductile cast iron pipe, used for water and sewer lines. Ductile cast iron pipe is stronger and easier to tap, requires less support and provides greater flow area compared with pipes made from other materials like PVC, concrete, polyethylene or steel. Ductile Iron Pipe is the most widely-used pipeline product in water supply and water drain/sewage projects.


Our advantages:

There are lots of qualified managers and technicians, and a well-trained team of after-sales service, which provides all services of manufacture, package, transportation and installation. We are looking forward to cooperating with friends from abroad and home creating a brighter future.


Contact Details

Phone Number : 86-371-53378091