DUCTILE IRON PIPE DN80-DN1600

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Specification:

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 (%)
C	3.5-4.0	3.2-3.8	0.1-0.2
Si	1.9-2.6	1.4-2.2	0.15-0.4
Mn	0.15-0.45	0.4-0.6	0.3-0.6
P	≤0.06	≤0.3	0.02-0.03
S	≤0.02	≤0.1	0.02-0.03
Mg	0.03-0.06

12) Feature:

Mechanical properties
	Ductile Cast Iron Pipe	Grey Iron Pipe	Steel Pipe
Tensile Strength(Mpa)	≥420	150-260	≥400
Yield Strength(Mpa)	≥300	No Confirmation	No Confirmation
Bending Strength(Mpa)	≥590	200-360	≥400
Elongation (%)	≥10	Neglected	≥18
Brinell Hardness(HBS)	≤230	≤230	About 140

13) T type mechanical joint

14) Packing: in bulk or container

Q:Ductile cast iron can replace copper sleeve: The tensile and compressive capacity of the ball milled cast iron is not as good as that of copper. The hardness of Rongchang graphite copper sheath can reach HB210

Q:Can ductile iron pipes be used in gravity sewer systems?: Yes, ductile iron pipes can be used in gravity sewer systems. Ductile iron is a strong and durable material that is commonly used in various applications, including sewer systems. It has excellent resistance to corrosion and can withstand high pressure and heavy loads. Additionally, ductile iron pipes have a smooth interior surface, which helps to reduce friction and improve the flow of waste and wastewater. Therefore, they are a suitable choice for gravity sewer systems, where the flow of sewage relies on gravity to move through the pipes.

Q:How do ductile iron pipes compare to PVC pipes?: Ductile iron pipes are generally stronger and more durable compared to PVC pipes. They have a higher tensile strength and can withstand higher pressure, making them suitable for more demanding applications such as water mains and sewer lines. PVC pipes, on the other hand, are lightweight, easy to install, and resistant to corrosion, making them a popular choice for household plumbing and irrigation systems. Ultimately, the choice between ductile iron and PVC pipes depends on the specific needs and requirements of the project.

Q:What are the typical surge anticipation measures for ductile iron pipe?: To mitigate potential damage caused by surges or water hammer in ductile iron pipe systems, various techniques can be employed. These measures aim to absorb or redirect sudden pressure changes, preventing pipe rupture or failure. Common surge anticipation measures for ductile iron pipe include: 1. Incorporating air chambers strategically along the pipeline to create a cushion of air that absorbs surge energy. As the pressure wave travels through the pipe, the air compresses, reducing the impact on the pipe and minimizing the risk of damage. 2. Connecting surge tanks, which act as storage reservoirs for excess pressure, to the pipeline. When a surge occurs, the surge tank absorbs the excess water volume, preventing damage to the pipe. The stored water is gradually released back into the system, stabilizing the pressure. 3. Installing surge relief valves in the pipeline to automatically release excess pressure during surge events. These valves open when the pressure exceeds a preset limit, allowing the surge to dissipate harmlessly. Surge relief valves can be adjusted to release the desired amount of pressure, ensuring the safety of the ductile iron pipe. 4. Utilizing water hammer arrestors, which are devices that absorb the shock generated by surges and water hammer. These devices consist of sealed chambers filled with a compressible gas or liquid that absorbs sudden pressure changes. By absorbing the energy, water hammer arrestors protect the ductile iron pipe from potential damage. 5. Using surge suppressors, devices that regulate the flow of water during surge events. Surge suppressors are designed to reduce the speed at which surges travel through the pipe, minimizing the impact on the system. These devices can be installed at critical points in the pipeline to prevent damage to the ductile iron pipe. To determine the most suitable surge anticipation measures for ductile iron pipe installations, it is important to consider the specific requirements of the pipeline system and consult experienced engineers or industry professionals.

Q:Luo what effect of ductile cast iron: Chromium can improve the hardness, strength and wear resistance of nodular iron, and increase bainite in bainite ductile iron.

Q:Are ductile iron pipes suitable for trenchless installation methods?: Yes, ductile iron pipes are suitable for trenchless installation methods. They possess the necessary strength and flexibility to withstand the installation process without compromising their structural integrity. Additionally, their corrosion resistance and durability make them a reliable choice for trenchless installations.

Q:What do ductile iron pipes need to connect with three? Can I contact it directly?: Because the interface material used in the old process is poisonous, especially in the water supply pipeline, environmental protection requires a new process now

Q:How do ductile iron pipes handle water velocity?: Ductile iron pipes are well-suited to handle water velocity due to their unique mechanical properties. Ductile iron is a highly durable and strong material that can withstand high water velocities without experiencing significant damage or deformation. The pipe's inherent ductility allows it to absorb the energy created by the flowing water, which helps to minimize the risk of pipe failure or bursting. This property makes ductile iron pipes capable of handling high-pressure water flow, making them ideal for applications where water velocity is a concern. Additionally, ductile iron pipes have a smooth internal surface, which promotes efficient water flow and minimizes friction losses. This smoothness reduces the resistance encountered by the water as it flows through the pipe, allowing for higher water velocities without compromising the pipe's integrity. Furthermore, ductile iron pipes can be manufactured in various sizes and thicknesses, allowing for customization based on specific water velocity requirements. This flexibility ensures that ductile iron pipes can effectively handle a wide range of water velocities, from low-flow applications to high-velocity scenarios. In summary, ductile iron pipes have excellent handling capabilities when it comes to water velocity. Their strength, ductility, and smooth internal surface contribute to their ability to withstand high water velocities without compromising their structural integrity, making them a reliable choice for water distribution systems.

Q:How does ductile iron pipe resist internal corrosion?: Ductile iron pipe resists internal corrosion due to the protective barrier formed by its cement lining. This lining acts as a barrier between the iron pipe and the transported fluid, preventing direct contact and minimizing the chances of corrosion. Additionally, the high carbon content in ductile iron enhances its corrosion resistance compared to other types of iron pipes.

Q:How are ductile iron pipes tested for quality?: Ductile iron pipes are tested for quality through various methods, including hydrostatic pressure testing, dimensional inspection, and mechanical properties testing. Hydrostatic pressure testing involves subjecting the pipes to water pressure to ensure they can withstand the intended operating conditions without any leakage or failure. Dimensional inspection assesses the pipes' dimensions, such as diameter, wall thickness, and length, to ensure they meet the specified standards. Mechanical properties testing evaluates the pipes' tensile strength, yield strength, and elongation to ensure they possess the necessary strength and flexibility. Overall, these rigorous testing procedures help ensure the high quality and reliability of ductile iron pipes.

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