PRODUCT

Hot Sales K7 K8 K9 7mm 9mm 12mm Thickness ISO 2531 EN545 DN300 DN500 C40 C30 C25 DI Pipe Ductile Cast Pipe Ductile Iron Pipe

Hot Sales K7 K8 K9 7mm 9mm 12mm Thickness ISO 2531 EN545 DN300 DN500 C40 C30 C25 DI Pipe Ductile Cast Pipe Ductile Iron Pipe

T-type C-grade socket ductile iron pipe has become the preferred material for modern municipal pipe network construction due to its high pressure adaptability, excellent corrosion resistance and flexible interface design. Its standardized production (in compliance with multiple standards such as ISO/GB/EN) and full-scenario applicability (water supply, drainage, heating, etc.) provide a reliable and economical solution for infrastructure.
Product Description
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T-type C-grade socket ductile iron pipe has become the preferred material for modern municipal pipe network construction due to its high pressure adaptability, excellent corrosion resistance and flexible interface design. Its standardized production (in compliance with multiple standards such as ISO/GB/EN) and full-scenario applicability (water supply, drainage, heating, etc.) provide a reliable and economical solution for infrastructure.

1. Product definition and standards

C-level definition: represents the pressure level standard of the pipeline, divided according to the international standard ISO2531 and the national standard GB/T13295-2019, GB/T26081-2022, common levels include:

C25: working pressure 2.5MPa

C30: working pressure 3.0MPa

C40: working pressure 4.0MPa.

Core material: ductile iron (graphite has a spherical structure), with high mechanical properties (tensile strength 370~480MPa), combining the strength of steel and the corrosion resistance of iron.

2. Specifications and parameters

Diameter range: DN80 to DN2600, covering the needs of small and medium-sized water supply to large municipal pipe networks.

Single pipe length: The standard effective length is 6 meters, and some manufacturers provide 6~6.5 meters customization.

Interface form: T-type socket-type flexible interface, sealed with rubber ring, allowing a certain angle of deflection (good seismic resistance and convenient installation).

3. Structural features

Inner anti-corrosion layer

Cement mortar lining: ordinary cement or high-alumina cement material, to ensure water delivery hygiene and reduce fluid resistance.

Outer anti-corrosion layer

Double-layer protection:

Spray zinc layer (130g/, high-quality products up to 200g/);

Final coating (asphalt paint or environmentally friendly epoxy resin paint, thickness 70μm).

Significantly improve soil environmental adaptability, design life of more than 50 years.

4. Performance advantages

High pressure bearing capacity: C40 grade can withstand 4.0MPa high pressure, suitable for long-distance water transfer and high-pressure pipeline network.

Flexible seismic resistance: T-type interface allows micro-displacement of pipelines to adapt to foundation settlement and seismic disturbance.

Economical: thin-wall design reduces material consumption, the comprehensive cost is lower than steel pipe, and the maintenance cost is low.

Environmental protection and sanitation: cement lining meets drinking water safety standards (such as ISO4179).


Item

Ductile iron pipe

Class

K9, K10, K11, K12,K9, K8, C25, C30, C40, etc.



Size

Outside Diameter: 98mm-1255mmInside Diameter: 80mm-1200mmWall Thickness: 6mm-153mmLength: 6m, cut to 5.7m, or as required.

Surface

External bitumen coating, or as required.


Lining and Coating

Internal Lining: cement mortar lining as per ISO 4179

Zinc Coating:at least 130g/m2 as per ISO 8179

Bitumen Painting : at least 70um as per ISO8179

Application

Water supply project, drainage, sewage, irrigation, water pipeline, etc.

Pressure

PN10, PN16, PN25,PN40

Diameter

DN80-DN2600 mm

Pipe Joint

T type push-on joint, K type joint, self-restrained joint

Packing

Bundled with steel belts or in bulk

Price term

FOB, EXW,CIF, CFR, etc.

Payment

T/T, L/C, Western Union, etc.

Certificates

ISO, CE, BSI, WRAS


Standard Size

DN
mm
DE
mm
Pressure classNominal iron wall thickness
mm
4056C404.4
5066C404.4
6077C404.4
6582C404.4
8098C404.4
100118C404.4
125144C404.5
150170C404.5
200222C404.7
250274C405.5
300326C406.2
350378C306.3
400429C306.5
450480C306.9
500532C307.5
600635C308.7
700738C258.8
800842C259.6
900945C2510.6
10001048C2511.6
11001152C2512.6
12001255C2513.6
14001462C2515.7
15001565C2516.7
16001668C2517.7
18001875C2519.7
20002082C2521.8
22002288C2523.8
24002495C2525.8
26002702C2527.9
a   A tolerance of+l mm applies.
b   Thicknesses are greater than caiculated for smoothing between C40 and C30 and also between C30 and C25


1754531799811898971039633408


Factory Display
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  • 离心浇筑
Customer Visit
  • 伊拉克客户
  • 法国
  • 1
  • 印度
Project Cases

Mauritania Project

 

In the process of urban construction in Mauritania, ductile iron pipes have laid a solid foundation for the reliable operation of municipal projects with their excellent performance.

Ethiopia kismayo urban water supply

It is resistant to high temperature and salt-alkali corrosion, adapted to the local desert climate and soil conditions, and ensures long-term and stable water supply in the pipeline.

Durban, South Africa

 

The flexible interface speeds up installation, is suitable for pipe network renovation in old urban areas, facilitates subsequent maintenance, and reduces operating costs.

Durban City Water Supply, South Africa

Adapted to Durban's hot and humid climate and coastal saline environment, the anti-corrosion coating effectively resists rust and ensures the long-term stability of the water supply system.

Dammam, Saudi Arabia

Adapting to the hot and dry climate of Daman, the pipeline has strong thermal stability, ensuring the reliable operation of the water supply system in hot environments.

Shaanxi sewage renovation

The inner wall anti-corrosion layer resists the erosion of acid and alkali substances in sewage, adapts to complex water quality, and extends the service life of the pipeline.

Xinjiang

Adapting to the large temperature difference between day and night and seasons in Xinjiang, the pipeline has strong stability in thermal expansion and contraction, ensuring smooth water supply.

Greek City Water Supply

Adapted to the water quality characteristics of Greek coastal cities, it resists seawater backflow and salt erosion, and ensures stable water quality.

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