DUCTILE IRON PIPE DN125 K8

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Loading Port:: China Main Port

Payment Terms:: TT or LC

Min Order Qty:: 20 m.t.

Supply Capability:: -

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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

15) Additional : Ductile iron pipe fittings accoding t ISO2531/EN545/EN598

Gate valve according to DIN standard, BS Standard

Other accessories related to Water field

Q:What are the disadvantages of using ductile iron pipes?: Using ductile iron pipes in various applications comes with several drawbacks. Firstly, these pipes tend to be more expensive compared to other types like PVC or HDPE, which can be problematic for projects with budget constraints. Secondly, their relatively heavy weight makes transportation and installation more labor-intensive and time-consuming. This increases overall project costs, especially when specialized equipment and skilled workers are required. Another disadvantage is their susceptibility to corrosion. Exposure to environmental factors, like soil conditions and water chemistry, can lead to rust and scale formation on the inner and outer surfaces of the pipe. This reduces the pipe's lifespan and potentially affects water quality. Furthermore, ductile iron pipes can crack or break under certain conditions, especially when subjected to heavy loads or significant ground movement. This necessitates costly repairs or replacements, causing additional expenses and disruptions to the water supply. Lastly, ductile iron pipes have relatively low resistance to impact and abrasion compared to other materials. This makes them more vulnerable to damage from external forces, such as construction activities or accidental impacts, resulting in increased maintenance and repair costs. In conclusion, while ductile iron pipes have advantages like high tensile strength and durability, it is crucial to consider these disadvantages before deciding to use them in a specific project.

Q:Can ductile iron pipe be used for wastewater treatment plant sludge handling?: Yes, ductile iron pipe can be used for wastewater treatment plant sludge handling. Ductile iron pipes are known for their durability, corrosion resistance, and ability to withstand heavy loads, making them suitable for handling sludge in wastewater treatment plants.

Q:Is ductile iron pipe breakable?: The ductile iron pipe has many uses in our city construction, for our city water supply, gas supply and so on. But ductile iron pipes are also very useful in sewage disposal. As we all know, ductile iron pipe has many excellent properties, such as high strength, corrosion resistance, high pressure resistance, low accident rate, long service life and Gao Yanshen rate. It is an excellent water supply pipe.

Q:What is the typical pressure rating of ductile iron pipes?: The pressure rating of ductile iron pipes varies depending on the application and size, typically designed to endure high pressure levels. In water and wastewater systems, for instance, ductile iron pipes generally have a pressure rating of 250 psi or higher. In industrial applications like oil and gas pipelines, larger pipes can have a pressure rating ranging from 350 psi to 500 psi or more. To determine the precise pressure rating for a specific ductile iron pipe, it is crucial to consult the manufacturer's specifications and industry standards.

Q:Are ductile iron pipes suitable for bridge crossings?: Yes, ductile iron pipes are suitable for bridge crossings. They have high strength and durability, making them capable of withstanding heavy loads and providing reliable support for transportation infrastructure. Additionally, ductile iron pipes have excellent corrosion resistance properties, which is crucial for bridge crossings exposed to various weather conditions and potential water exposure.

Q:Are ductile iron pipes resistant to sulfuric acid corrosion?: Yes, ductile iron pipes are generally resistant to sulfuric acid corrosion due to their corrosion-resistant coatings and high chemical resistance.

Q:How do ductile iron pipes handle ground settlement near construction foundations?: Ductile iron pipes are known for their ability to handle ground settlement near construction foundations effectively. Due to their flexible nature, these pipes can withstand ground movement without experiencing severe damage or failure. When the ground settles near construction foundations, it can cause shifts in soil, which in turn can exert pressure on the surrounding infrastructure. Ductile iron pipes have the advantage of being able to absorb and distribute this pressure, minimizing the risk of pipe breakage or deformation. One key factor that contributes to the resilience of ductile iron pipes is their high tensile strength. This strength allows the pipes to maintain their structural integrity even under significant external forces. As a result, they can withstand ground settlement without experiencing fractures or cracks. Furthermore, ductile iron pipes also have a high degree of flexibility. This flexibility enables them to adapt to minor ground movements and accommodate shifts in soil without compromising their functionality. The pipes can bend slightly without breaking or causing leaks, ensuring continuous flow of fluids and preventing any disruptions to the construction project. In addition, ductile iron pipes are often installed with proper bedding and backfill materials. This ensures that the pipes have a stable and secure foundation, reducing the risk of movement and settlement. The use of these materials also helps distribute the load exerted on the pipes more evenly, further enhancing their ability to handle ground settlement. Overall, ductile iron pipes are an excellent choice for construction projects where ground settlement is a concern. Their strength, flexibility, and proper installation techniques allow them to effectively handle ground movement near construction foundations, providing reliable and long-lasting infrastructure.

Q:How is ductile iron pipe manufactured?: Ductile iron pipe is manufactured through a specific process known as centrifugal casting. The process starts with the melting of iron in a furnace, where specific elements such as carbon and silicon are added to achieve the desired properties. Once the iron is melted, it is poured into a spinning mold or a die that is rotating at a high speed. As the molten iron is poured into the rotating mold, centrifugal force pushes the liquid metal towards the inner surface of the mold. This force causes the metal to solidify from the outer surface inward. This results in a pipe with a dense outer layer and a more porous inner layer. The centrifugal casting process ensures that the pipe's outer surface is free from impurities and defects, ensuring its strength and durability. After the pipe has solidified, it is removed from the mold and undergoes further processing. The pipe is cleaned, excess material is trimmed off, and any surface imperfections are removed. It is then treated with a protective coating, such as zinc or epoxy, to enhance its corrosion resistance. The final step in the manufacturing process is quality control and testing. Ductile iron pipes are subjected to various tests to ensure they meet the required standards, including hydrostatic pressure testing, dimensional inspection, and internal and external coating inspection. In summary, ductile iron pipe is manufactured through the centrifugal casting process, which involves melting iron, pouring it into a rotating mold, and allowing it to solidify under centrifugal force. The resulting pipe is then cleaned, coated, and undergoes rigorous quality control to ensure its strength, durability, and adherence to standards.

Q:Are ductile iron pipes suitable for oil and gas pipeline applications?: Yes, ductile iron pipes are suitable for oil and gas pipeline applications. Ductile iron is a strong and durable material that can withstand high pressure and temperature conditions commonly found in oil and gas pipelines. It has excellent corrosion resistance, making it suitable for transporting oil and gas over long distances. Additionally, ductile iron pipes have a smooth interior surface that minimizes friction and allows for efficient flow of oil and gas.

Q:How do ductile iron pipes perform in earthquake-induced ground movements?: Ductile iron pipes have proven to be a reliable and resilient choice for underground infrastructure, including in areas prone to earthquake-induced ground movements. The unique properties of ductile iron, such as its strength and flexibility, allow it to withstand the effects of ground movements during an earthquake. During an earthquake, the ground experiences shaking and shifting, which can exert significant forces on underground pipes. Ductile iron pipes have the ability to flex under these forces, absorbing the energy and reducing the risk of failure. They can withstand substantial ground movements without cracking or breaking, which ensures the continued flow of water or other fluids. In addition, ductile iron pipes have excellent resistance to corrosion and are highly durable, making them suitable for long-term use in earthquake-prone areas. This reduces the need for frequent maintenance or replacement, providing cost-effective and reliable infrastructure solutions. Furthermore, the joints used in ductile iron pipe installations are designed to accommodate movement and allow for slight adjustments during ground shifts. This flexibility prevents the pipes from becoming dislodged or separated, maintaining the integrity of the system. Overall, ductile iron pipes have a proven track record of performance in earthquake-induced ground movements. They offer resilience, flexibility, and durability, ensuring the continuous functioning of water and sewer systems even in areas prone to seismic activity.

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