ductile iron pipeDN450 K8 SOCKET SPIGOT PIPE

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t

Supply Capability:: 30000 m.t/month

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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:Can ductile iron pipes be used for geothermal systems?: Yes, ductile iron pipes can be used for geothermal systems. Ductile iron is known for its strength, durability, and corrosion resistance, making it suitable for various applications including geothermal systems. These pipes can handle high temperatures and pressure fluctuations commonly found in geothermal systems. Additionally, ductile iron pipes have excellent thermal conductivity properties, allowing for efficient heat transfer between the geothermal fluid and the surrounding environment. Therefore, ductile iron pipes are a viable option for transporting geothermal fluids in geothermal systems.

Q:How do ductile iron pipes handle thermal expansion and contraction?: Ductile iron pipes are known for their excellent ability to handle thermal expansion and contraction. This is mainly due to their unique composition and design which allows them to withstand changes in temperature without experiencing significant damage or deformation. Thermal expansion occurs when a material expands due to an increase in temperature, while thermal contraction refers to the contraction that occurs when a material cools down. Ductile iron pipes can effectively accommodate these changes in temperature by utilizing their inherent flexibility and strength. One of the key factors that enable ductile iron pipes to handle thermal expansion and contraction is their high ductility, which refers to their ability to deform without breaking. This ductility allows the pipes to absorb the expansion and contraction forces without cracking or rupturing. Moreover, the composition of ductile iron pipes includes graphite nodules, which act as microcracks that can absorb stress and prevent the material from fracturing. This unique microstructure enhances the pipes' resistance to thermal expansion and contraction. In addition, ductile iron pipes are often designed with joints that allow for limited movement. These joints, such as mechanical joints or push-on joints, can accommodate the expansion and contraction of the pipes by providing a certain degree of flexibility. This helps to prevent the pipes from becoming overstressed or damaged. Overall, ductile iron pipes are specifically engineered to handle thermal expansion and contraction effectively. Their high ductility, unique microstructure, and joint design make them a durable and reliable choice for applications where temperature variations are expected.

Q:Can ductile iron pipes be used for water distribution networks in rural areas?: Ductile iron pipes are suitable for water distribution networks in rural areas due to their high strength and durability. These pipes are known for their ability to withstand external loads and pressure, making them ideal for underground installations. Additionally, they have excellent resistance to corrosion and can withstand harsh environmental conditions or agricultural activities. In rural areas, where the water distribution network may face challenging conditions, ductile iron pipes offer a reliable solution. They are less likely to crack or leak, ensuring a continuous water supply for rural communities. Moreover, these pipes have a long service life, often exceeding 100 years, making them a cost-effective choice that requires minimal maintenance and replacement. However, it is crucial to consider other factors such as the availability of ductile iron pipes, installation costs, and the technical expertise required for installation and maintenance. Local regulations and standards should also be followed to ensure compliance and safety. Overall, ductile iron pipes can provide a suitable and dependable option for water distribution networks in rural areas. They offer a long-lasting and efficient solution for delivering clean water to communities.

Q:Can ductile iron pipes be used for railway crossings?: Yes, ductile iron pipes can be used for railway crossings. Ductile iron is a strong and durable material that can withstand heavy loads and high traffic volumes, making it suitable for railway crossings. Additionally, it has excellent corrosion resistance properties, which is important for withstanding the harsh environmental conditions associated with railway crossings.

Q:What is the average diameter range of ductile iron pipes?: The average diameter range of ductile iron pipes is typically between 3 inches to 64 inches.

Q:Can ductile iron pipes be installed outdoors?: Graphite is exist in spherical form, usually graphite size is 6-7, casting spheroidization grade control requirements for 1-3 quality (spheroidization rate greater than 80%), so the mechanical properties of the material itself has been improved, has the essence of iron, steel performance. The annealed ductile iron pipe is composed of ferrite and pearlite. The mechanical properties of the ductile iron pipe are better.

Q:What are the typical maintenance requirements for ductile iron pipe?: To maintain ductile iron pipe, it is necessary to conduct regular inspections, clean the pipe, and repair any damage. Inspections play a crucial role in identifying signs of damage, corrosion, or leaks. This can be done visually or using non-destructive testing techniques such as ultrasonic or magnetic particle testing. Regular inspections are important for detecting and addressing issues before they worsen and cause significant damage. Cleaning is another essential maintenance requirement for ductile iron pipe. Over time, sediment, scale, and debris can accumulate inside the pipe, reducing its flow capacity and potentially causing blockages. Regular cleaning methods like high-pressure water jetting or mechanical cleaning can remove these deposits, ensuring optimal flow and preventing problems related to reduced flow or pressure. Repairing any damage or corrosion is crucial for maintaining ductile iron pipe. If cracks, leaks, or other forms of damage are detected during inspections, prompt repairs are necessary to prevent further deterioration and potential failure. Depending on the extent of the damage, repairs may include welding, epoxy lining, or replacement of the affected section of the pipe. In addition to these specific maintenance requirements, implementing a comprehensive maintenance program is important. This may involve preventative measures such as cathodic protection to prevent corrosion or the application of protective coatings to extend the pipe's lifespan. Overall, regular inspections, cleaning, and repairs are necessary for maintaining ductile iron pipe. Following these maintenance practices ensures the pipe's longevity, reliability, and optimal performance, reducing the risk of failures and disruptions.

Q:How does ductile iron pipe perform in high-velocity flow conditions?: Ductile iron pipe performs well in high-velocity flow conditions. Its inherent strength and durability make it resistant to the forces of high-velocity flow, minimizing the risk of damage or failure. The material's ability to withstand pressure surges and turbulence ensures reliable performance even in demanding flow conditions.

Q:Are ductile iron pipes suitable for use in mining tailings pipelines?: Yes, ductile iron pipes are suitable for use in mining tailings pipelines. Ductile iron has excellent strength and durability properties, making it capable of withstanding the high pressure and abrasive nature of tailings. Furthermore, its corrosion resistance and ability to withstand harsh environmental conditions make it a reliable choice for mining applications.

Q:How are ductile iron pipes protected against mechanical damage?: Various measures are implemented to protect ductile iron pipes from mechanical damage, ensuring their durability and longevity. One effective approach involves applying a protective coating to the exterior surface of the pipes. This coating acts as a barrier, safeguarding the ductile iron from physical abrasion, impact, and corrosion. Depending on specific requirements and environmental conditions, the coating can be composed of materials such as epoxy, polyethylene, or zinc. In addition to the protective coating, ductile iron pipes are designed with a high level of structural strength. They are manufactured to withstand significant pressure and external forces, making them less vulnerable to mechanical damage. The inherent strength of the material enables the pipes to resist deformation and cracking, even when subjected to heavy loads or ground movements. Moreover, proper bedding and backfilling techniques are employed during the installation of ductile iron pipes. This involves carefully placing the pipes in a prepared trench to ensure a stable foundation and minimize the risk of external forces causing damage. The correct backfill material is then used to provide support and prevent excessive pressure on the pipes. To further enhance protection against mechanical damage, additional measures such as concrete encasement or protective sleeves are often employed during the installation of ductile iron pipes. Concrete encasement involves surrounding the pipe with a layer of concrete, offering an extra layer of defense against external forces. Protective sleeves can also be utilized in areas prone to impact or where additional protection is necessary. Regular inspections and maintenance play a crucial role in ensuring the continuous protection of ductile iron pipes against mechanical damage. Periodic checks for signs of wear, corrosion, or other forms of damage enable timely repairs or replacements, preventing further deterioration. In summary, a combination of protective coatings, structural strength, proper installation techniques, and regular maintenance effectively safeguards ductile iron pipes against mechanical damage, guaranteeing their reliable performance and long lifespan in various applications.

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