• DUCTILE IRON PIPE DN800 K9 System 1
  • DUCTILE IRON PIPE DN800 K9 System 2
  • DUCTILE IRON PIPE DN800 K9 System 3
  • DUCTILE IRON PIPE DN800 K9 System 4
DUCTILE IRON PIPE DN800 K9

DUCTILE IRON PIPE DN800 K9

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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 pipe be used for underground applications?
Indeed, underground applications can employ ductile iron pipe. Renowned for its robustness and endurance, ductile iron pipe proves to be well-suited for a multitude of underground uses, including water and sewage systems, gas pipelines, and irrigation systems. Its exceptional resistance to corrosion and external burdens renders it a dependable selection for underground installations, where sustained functionality and structural soundness are pivotal considerations. Moreover, ductile iron pipe's pliability enables it to endure ground shifting and settling sans fracturing or shattering, making it an apt choice for regions susceptible to seismic occurrences.
Q:How does ductile iron pipe perform in areas with high soil movement?
Ductile iron pipe is known for its strength, durability, and flexibility, making it an ideal choice for areas with high soil movement. Unlike other types of piping materials, such as PVC or concrete, ductile iron pipe has the ability to withstand significant ground shifting without experiencing catastrophic failure. The inherent strength of ductile iron pipe allows it to resist the external forces exerted by soil movement, such as settlement, lateral movement, or ground heave. Its high tensile strength and ability to withstand bending stresses make it less susceptible to cracks, fractures, or leaks, ensuring the integrity of the pipeline system. Furthermore, ductile iron pipe has excellent deflection capabilities, meaning it can flex and accommodate ground movement without breaking. This flexural capacity enables the pipe to distribute the stress caused by soil movement along its length, reducing the concentration of forces at any specific point. In areas with high soil movement, ductile iron pipe also benefits from its corrosion resistance properties. The pipe is typically coated with a protective layer, such as cement-mortar lining or polyethylene encasement, which acts as a barrier against corrosive elements present in the soil. This protective coating helps to prevent damage and deterioration, ensuring the longevity and performance of the pipe even in challenging soil conditions. Overall, ductile iron pipe is highly recommended for areas with high soil movement due to its superior strength, flexibility, and corrosion resistance. Its ability to withstand ground shifting and distribute stress makes it a reliable choice for long-term performance and minimal maintenance requirements.
Q:What is the expected corrosion protection system for ductile iron pipes?
The expected corrosion protection system for ductile iron pipes typically includes a combination of internal and external coatings, such as cement mortar lining and an external polyethylene or epoxy coating. Additionally, sacrificial anode systems or impressed current cathodic protection may be employed to further enhance the corrosion resistance of the pipes.
Q:What's the difference between cast iron pipe and steel pipe?
Steel tube (Steel pipe) production technology development began in the bicycle manufacturing industry, the rise of the early nineteenth Century during the oil development, the two world war ships, boilers, aircraft manufacturing, manufacturing of power boiler after the Second World War, the development of chemical industry of petroleum and natural gas drilling and transportation, will effectively promote the the yield and quality of varieties, the development of steel tube industry.
Q:What are the different methods for tapping ductile iron pipe?
Tapping ductile iron pipe can be done in several different ways, depending on the project's specific needs. Some commonly used methods include: 1. Mechanical Tapping: To create a hole in the ductile iron pipe, a mechanical tapping machine is employed. Equipped with a rotating cutting tool, the machine easily cuts through the pipe wall, resulting in a clean hole. This method is ideal for smaller diameter pipes and is both quick and efficient. 2. Hot Tapping: While the ductile iron pipe is still in service and under pressure, hot tapping involves creating a hole. To ensure safety and maintain the pipe's integrity, specialized equipment and expertise are required. Hot tapping is commonly used when shutting down the pipeline for maintenance or repair work is impractical or not feasible. 3. Electrofusion Tapping: For larger diameter pipes, electrofusion tapping is a suitable method. It involves using an electrofusion saddle and fitting to create a branch connection on the ductile iron pipe. By welding a fitting onto the pipe with an electrofusion machine, a secure and leak-proof connection is achieved. This method can be used for both water and gas applications. 4. Saddle Tapping: A cost-effective and simple method for smaller diameter pipes is saddle tapping. It involves attaching a saddle or clamp onto the ductile iron pipe and drilling a hole through it. The saddle is then equipped with a threaded outlet to connect a branch line. 5. Split Sleeve Tapping: For larger diameter pipes, split sleeve tapping is commonly used. This method requires cutting a section out of the ductile iron pipe and installing a split sleeve over the cut. By bolting the split sleeve together, a secure and watertight connection is established. It is suitable for both water and gas applications. When selecting the tapping method, it is crucial to consider factors like pipe size, pressure rating, required branch connection, and project-specific requirements. Consulting a professional engineer or tapping specialist is highly recommended to ensure the correct method is used for tapping ductile iron pipe.
Q:How does ductile iron pipe handle ground movement and settlement?
Ductile iron pipe is highly resilient and can effectively handle ground movement and settlement. Its flexibility and strength allow it to withstand external loads and pressure variations caused by ground shifts and settlement. The pipe's inherent ability to absorb and distribute stress ensures its stability, minimizing the risk of damage or failure due to ground movement. Additionally, ductile iron pipes are commonly installed with flexible joints that further accommodate ground shifts, providing a reliable and durable solution for underground applications.
Q:Can ductile iron pipes be used for wastewater treatment plants?
Indeed, ductile iron pipes have proven to be a viable option for wastewater treatment plants. Renowned for their robustness and endurance, these pipes are well-suited to endure the challenging and corrosive conditions present in such facilities. They possess the ability to withstand elevated pressures and exhibit resistance against corrosion, which is crucial for effectively managing wastewater and the diverse range of chemicals utilized in the treatment procedure. Additionally, ductile iron pipes offer the advantage of being effortless to install and maintain, ensuring an extended period of service. Consequently, they are frequently utilized in wastewater treatment plants for the transportation and distribution of wastewater across the entirety of the establishment.
Q:How are leaks repaired in ductile iron pipe?
Leak repairs in ductile iron pipes are typically carried out using various methods depending on the severity and location of the leak. One commonly used technique is the application of epoxy-based sealants or leak repair clamps. For small leaks, epoxy sealants are commonly used. This involves applying a specialized epoxy compound to the leaking area, which then hardens and forms a durable seal over the leak. The epoxy is carefully applied to the surface of the pipe, covering the leakage point and any surrounding damaged areas. This method is effective for small leaks and can provide a long-lasting solution. In cases where the leak is larger or more severe, leak repair clamps are often employed. These clamps are designed to provide a mechanical seal over the leak, using rubber gaskets and bolts to secure the clamp tightly around the pipe. The pressure from the clamp compresses the gasket onto the pipe, creating a watertight seal and preventing further leakage. Leak repair clamps are available in various sizes to accommodate different pipe diameters. In both cases, it is crucial to properly prepare the pipe surface before applying the repair method. The area around the leak must be cleaned and dried thoroughly to ensure good adhesion of the epoxy or proper sealing with the clamp. Additionally, it is essential to follow the manufacturer's instructions and guidelines for the chosen repair method to ensure a successful and long-lasting repair. It is important to note that these repair methods are temporary solutions and may not be suitable for all situations. In some cases, particularly for extensive pipe damage or aging infrastructure, it may be necessary to replace the affected pipe section entirely. Professional assessment and guidance from qualified technicians or plumbers are recommended when dealing with leaks in ductile iron pipes to ensure proper repairs and minimize the risk of future issues.
Q:How do ductile iron pipes perform in acidic soil conditions?
Ductile iron pipes have a reputation for being durable and resistant to different environmental conditions, including acidic soil conditions. When exposed to acidic soil, these pipes exhibit excellent resistance to corrosion due to their unique composition and protective coating. The high carbon content in ductile iron pipes gives them inherent resistance to corrosion, even in acidic environments. Additionally, these pipes are typically lined with cement mortar or a suitable epoxy coating, which provides an extra layer of protection against acid attack. The combination of the high carbon content and protective coating creates a barrier that prevents direct contact between the acid and the iron, thus minimizing the risk of corrosion. This ensures that the pipes remain structurally sound and maintain their integrity over a long period of time. Furthermore, ductile iron pipes have a long service life and are designed to withstand a wide range of soil conditions. Their strength and flexibility enable them to endure the stresses and strains caused by the surrounding soil, including acidic soil environments. This makes them an ideal choice for applications in soils with higher acidity levels. It is important to note that while ductile iron pipes perform well in acidic soil conditions, the severity and concentration of the acid can affect their performance. In extremely aggressive or highly concentrated acidic environments, additional corrosion protection measures may be necessary, such as sacrificial anodes or cathodic protection systems. In conclusion, ductile iron pipes are highly resilient and excel in acidic soil conditions. Their corrosion resistance, combined with their strong structure and protective coating, ensures their longevity and reliability, making them a preferred choice for various applications in such environments.
Q:What does ductile iron pipe "K" mean?
1 、 pipe fittings are K type, T type, etc.;2 wall thickness registration symbol. For example, according to the pipe quality standards GB/T13295-K9, which is the wall thickness ofK=9* (DN/1000+0.5)

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