DUCTILE IRON PIPE DN400 K8

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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: Are ductile iron pipes suitable for high-temperature applications?: Ductile iron pipes are generally not suitable for high-temperature applications. While ductile iron is known for its strength and durability, it has limitations when it comes to high temperatures. Ductile iron pipes are typically rated for a maximum operating temperature of around 250-300 degrees Fahrenheit (120-150 degrees Celsius). At higher temperatures, ductile iron pipes can experience thermal expansion, which may lead to cracking or distortion. This can compromise the structural integrity of the pipe and potentially cause leaks or failures. Additionally, ductile iron is susceptible to oxidation at elevated temperatures, which can further degrade the pipe's performance over time. For high-temperature applications, it is generally recommended to use materials specifically designed for such conditions, such as stainless steel or high-temperature alloys. These materials offer better resistance to thermal expansion, oxidation, and other factors associated with high temperatures.

Q: Can ductile iron pipes be used in areas with high soil acidity?: To ensure the durability and performance of ductile iron pipes in areas with high soil acidity, certain precautions should be taken. Ductile iron pipes are renowned for their strength, durability, and resistance to corrosion, making them suitable for various soil conditions, including those with high acidity. However, the presence of high soil acidity can still pose a potential risk to ductile iron pipes over time. Acidic soils can accelerate the corrosion process, leading to the degradation of the pipe material. To mitigate this risk, the following measures can be implemented: 1. Protective Coatings: Applying protective coatings, such as epoxy or polyethylene, to the outer surface of the pipes adds an extra layer of defense against soil acidity. These coatings act as a barrier, preventing direct contact between the pipe and the corrosive soil. 2. pH Adjustment: Adjusting the pH levels of the soil can help reduce its acidity. This can be achieved by incorporating lime or other neutralizing agents into the soil, creating a more favorable environment for the ductile iron pipes. 3. Cathodic Protection: Employing cathodic protection systems is an effective method to prevent corrosion in ductile iron pipes. This technique involves utilizing sacrificial anodes or impressed current systems to generate a protective electrical current that counteracts the corrosive effects of the soil. 4. Regular Inspections: Conducting periodic inspections is crucial to monitor the condition of the ductile iron pipes in high soil acidity areas. This enables early detection of any corrosion or degradation, facilitating timely repairs or replacements. By implementing these measures, ductile iron pipes can be effectively utilized in areas with high soil acidity, guaranteeing long-term performance and minimizing the risks associated with corrosive soils. However, it is advisable to consult experts or engineers familiar with local soil conditions and project requirements to determine the most suitable materials and protective measures.

Q: Are ductile iron pipes resistant to impact damage?: Ductile iron pipes possess remarkable strength and durability, rendering them resistant to impact damage. Their exceptional toughness and flexibility are a result of their unique composition, which includes a higher percentage of carbon and silicon. Consequently, ductile iron pipes can withstand external forces and impacts, such as those caused by heavy construction equipment or accidental incidents during installation or maintenance activities. Moreover, these pipes exhibit a high resistance to cracking and fracturing, thereby further enhancing their ability to endure impact damage. However, it should be noted that although ductile iron pipes are highly resistant to impact damage, they are not completely immune. Extreme or repeated impacts may still inflict damage, albeit to a lesser extent compared to other pipe types. Regular inspections and maintenance are crucial to detecting and addressing any potential impact damage to ensure the long-term integrity and performance of ductile iron pipes.

Q: Does the cast iron pipe for spheroidal graphite need corrosion protection when laying underground?: Ductile cast iron pipe after annealing, the microstructure is ferrite and pearlite, good mechanical properties, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc..

Q: What are the requirements for the hydrostatic test of ductile iron pipes?: Hydraulic test of pipeline segment length should not be more than 1 kilometers, the test pipe should be in full of water, no pressure under the condition of full immersion, soaking time of ductile cast iron pipe without mortar lining not less than 24 hours, a mortar lining the immersion of not less than 48 hours.

Q: Can ductile iron pipe be used for potable water systems?: Yes, ductile iron pipe can be used for potable water systems. Ductile iron is a type of cast iron that is known for its strength, durability, and ability to withstand high pressure. It is also corrosion-resistant, making it suitable for use in water distribution systems. Ductile iron pipe is commonly used in potable water systems due to its longevity and low maintenance requirements. Additionally, it is approved by various standards organizations, such as the American Water Works Association (AWWA), for use in potable water applications. However, it is important to ensure that the ductile iron pipe used for potable water systems is manufactured and installed according to the appropriate standards and regulations to ensure the safety and quality of the water supply.

Q: What's the advantage of FCD50 ductile iron?: Ductile iron generally large diameter, pipe wall thickness, crisp texture, low strength, low price, is an economic water supply pipe, the normal service life of up to 20~25 years.

Q: What are the advantages of cast iron pipes?: Ductile iron pipe is under high water pressure, can resist the external load change and adapt to the geological conditions, the pipe has the advantages of high strength, good toughness, corrosion resistance, convenient installation, flexible interface, strong shock resistance, low labor intensity, can be applied to the poor geological location and across the road, without additional processing pipe, and then with strong corrosion resistance, and can be applied to coastal saline alkali area. At present, it is widely used in underground pipeline project. Large pipe installation project can reflect the advantages of convenient installation and low labor intensity.

Q: How do ductile iron pipes handle ground movement or settlement?: Ductile iron pipes are renowned for their remarkable strength and flexibility, enabling them to effectively manage ground movement or settlement. Ground movement or settlement pertains to the natural shifts or settling of the earth's surface, which can exert stress on subterranean infrastructure such as pipes. Concerning ground movement, ductile iron pipes possess the advantage of enduring and absorbing the pressure and movement caused by shifting soil. The material's ductility permits the pipes to flex and bend to a certain extent without fracturing. This flexibility aids in distributing the load and minimizing the potential for harm. Additionally, ductile iron pipes exhibit high resistance to cracking or fracturing, even under extreme circumstances. This resilience stems from the material's unique microstructure, which imparts excellent tensile strength and impact resistance. Consequently, ductile iron pipes can withstand external forces and ground settlement without compromising their integrity. To further augment their capacity to handle ground movement or settlement, ductile iron pipes are frequently installed using flexible joints. These joints allow for slight movement and accommodate any shifting or settling of the ground. Furthermore, proper bedding and backfilling techniques are employed during installation to provide added support and stability. Overall, ductile iron pipes possess a proven track record in managing ground movement or settlement. Their strength, flexibility, and resistance to cracking establish them as a dependable choice for subterranean infrastructure, ensuring the durability and efficiency of water distribution systems.

Q: DN300 what's the price of the ductile iron pipe / the weight and the price of one meter?: Ductile iron pipe is a kind of cast iron. It is an alloy of iron, carbon and silicon.

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