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: How does ductile iron pipe perform in extreme temperatures?: Ductile iron pipe is known for its exceptional performance in extreme temperatures. Due to its unique composition and manufacturing process, ductile iron pipe can withstand both high and low temperatures without compromising its structural integrity. In high-temperature environments, ductile iron pipe demonstrates excellent heat resistance. It can withstand temperatures up to 1000 degrees Fahrenheit, making it suitable for applications that involve hot liquids or gases, such as steam pipelines or industrial processes. The high strength and thermal stability of ductile iron allow it to maintain its shape and structural integrity even under extreme heat conditions, ensuring long-term reliability and safety. Similarly, ductile iron pipe also performs well in low-temperature environments. It can endure sub-zero temperatures without becoming brittle or prone to cracking, which is a common issue with other materials like cast iron. This makes ductile iron pipe ideal for applications in cold climates, such as water distribution systems in freezing temperatures. Furthermore, ductile iron pipe's ability to resist thermal expansion and contraction is another advantage in extreme temperatures. It has a low coefficient of thermal expansion, meaning it expands and contracts less compared to other materials. This property helps to minimize the stress on the pipe and reduces the risk of leaks or failures caused by temperature fluctuations. In summary, ductile iron pipe exhibits exceptional performance in extreme temperatures. Its heat resistance, ability to withstand low temperatures, and resistance to thermal expansion and contraction make it a reliable choice for various applications, ensuring safe and efficient operations even in challenging environments.

Q: How does ductile iron pipe perform in high-pressure gas applications?: Ductile iron pipe is an excellent choice for high-pressure gas applications due to its unique characteristics and properties. Firstly, ductile iron pipe is known for its high tensile strength, which allows it to withstand the high pressure exerted by gas flowing through the pipeline. This strength ensures that the pipe can safely contain the gas without any leakage or rupture. Moreover, ductile iron pipe has a high resistance to corrosion, making it suitable for gas applications where the pipeline may come into contact with moisture, chemicals, or other corrosive substances. This resistance to corrosion ensures the longevity of the pipe and minimizes the risk of any damages or failures that could be caused by corrosion. Another advantage of ductile iron pipe in high-pressure gas applications is its ability to handle thermal expansion and contraction. When gas is transported at high pressures, there can be significant temperature variations, leading to expansion and contraction of the pipeline. Ductile iron pipe's flexibility allows it to accommodate these changes without causing any structural issues or compromising its performance. Furthermore, ductile iron pipe has a smooth interior surface, which reduces friction losses and pressure drops, allowing for efficient gas flow. This smoothness also minimizes the chances of gas impurities or debris getting trapped, which could potentially cause blockages or flow disruptions. In summary, ductile iron pipe is a reliable and durable choice for high-pressure gas applications. Its high tensile strength, corrosion resistance, ability to handle thermal expansion, and smooth interior surface all contribute to its excellent performance in such demanding conditions.

Q: How are ductile iron pipes installed?: Ductile iron pipes are typically installed using the following method. First, the trench is excavated to the required depth and width. The bottom of the trench is then carefully leveled and compacted to provide a stable foundation. Next, a bedding material, usually a sand and gravel mixture, is placed at the bottom of the trench. This bedding material helps to support the pipe and distribute the load evenly. It also serves to protect the pipe from any sharp objects that may be present in the soil. Once the bedding is prepared, the ductile iron pipes are carefully lowered into the trench and aligned to the desired position. It is important to ensure that the pipes are properly aligned and have the correct slope for efficient water flow. After the pipes are in place, they are joined together using a mechanical joint or a push-on joint system. These joints are designed to provide a secure and leak-free connection between the pipes. The joints are typically sealed using rubber gaskets, which help to create a watertight seal. Once the pipes are joined, the trench is backfilled with the excavated soil, taking care to compact it in layers to prevent settlement. The backfilling process is usually done in stages to allow for proper compaction. Finally, the installation is completed by connecting the ductile iron pipes to the existing water supply system or other pipes using appropriate fittings and valves. Pressure testing may also be carried out to ensure the integrity of the installation. Overall, the installation of ductile iron pipes requires careful planning, proper alignment, and secure jointing to ensure a long-lasting and reliable water supply system.

Q: How does ductile iron pipe perform in areas with high traffic loads?: Ductile iron pipe performs exceptionally well in areas with high traffic loads. Due to its superior strength and durability, it is highly capable of handling heavy loads and withstanding the impact caused by vehicular traffic. Ductile iron pipes have a high resistance to bending and cracking, making them ideal for applications in roadways, highways, and other high traffic areas. The high strength of ductile iron pipe allows it to distribute the weight and pressure exerted by heavy traffic loads more effectively, reducing the risk of deformation or failure. This makes it a reliable choice for transporting water, sewage, and other fluids in areas where heavy vehicles are commonly present. Additionally, ductile iron pipe has excellent corrosion resistance, which further enhances its performance in high traffic areas. It can withstand exposure to various environmental conditions, including moisture, chemicals, and abrasion, without compromising its structural integrity. This makes it a long-lasting and cost-effective solution, as it requires minimal maintenance and has a long service life. Furthermore, ductile iron pipe's smooth internal surface minimizes friction and allows for efficient flow of liquids, reducing energy consumption and maximizing the pipe's hydraulic capacity. This is particularly beneficial in areas with high traffic loads, where the demand for water or wastewater transportation is often greater. In summary, ductile iron pipe is a reliable and durable choice for areas with high traffic loads. Its strength, resistance to bending and cracking, corrosion resistance, and efficient flow characteristics make it an excellent option for transportation systems in roadways, highways, and other heavily trafficked areas.

Q: Are ductile iron pipes resistant to biogenic sulfide corrosion?: Yes, ductile iron pipes are generally resistant to biogenic sulfide corrosion. Biogenic sulfide corrosion occurs when hydrogen sulfide gas, produced by the decay of organic matter, reacts with metallic surfaces. However, ductile iron pipes have a protective layer called the cement mortar lining that acts as a barrier against corrosive agents. This lining provides excellent resistance to the corrosive effects of biogenic sulfide, making ductile iron pipes a suitable choice for applications where this type of corrosion is a concern. Additionally, the high strength and durability of ductile iron pipes further contribute to their resistance against biogenic sulfide corrosion.

Q: Are ductile iron pipes suitable for trenchless pipe ramming installations?: Yes, ductile iron pipes are suitable for trenchless pipe ramming installations. Ductile iron is a strong and durable material that can withstand the impact and stress of the ramming process. It has excellent tensile strength and can resist cracking or breaking under pressure. Additionally, ductile iron pipes are resistant to corrosion, making them a suitable choice for underground installations. The smooth interior surface of ductile iron pipes also facilitates the flow of fluids or gases. Overall, ductile iron pipes are a reliable and cost-effective option for trenchless pipe ramming installations.

Q: What is the typical lifespan of ductile iron pipe?: The typical lifespan of ductile iron pipe can vary depending on various factors such as the quality of the pipe, the conditions it is exposed to, and the maintenance practices employed. However, on average, ductile iron pipe has a lifespan of around 100 years. This is due to its inherent strength and durability, which allows it to withstand high pressure and various environmental conditions. Additionally, ductile iron pipe is often coated with protective materials such as cement mortar lining or polyethylene encasement, further enhancing its longevity. Regular inspections and maintenance can also help extend the lifespan of ductile iron pipe, ensuring that any issues or potential damages are identified and addressed promptly.

Q: How does ductile iron pipe compare to PVC pipe in terms of performance and cost?: Ductile iron pipe and PVC pipe are two commonly used materials for various piping applications, and they have distinct differences in terms of performance and cost. In terms of performance, ductile iron pipe is known for its exceptional strength and durability. It is highly resistant to internal and external pressures, making it suitable for carrying water, sewage, and other fluids under high pressure conditions. Ductile iron pipe also has an excellent resistance to corrosion and can withstand extreme temperature variations. Moreover, it has a longer lifespan, often lasting over 100 years, which makes it a reliable choice for long-term projects. On the other hand, PVC pipe is renowned for its versatility and ease of installation. It is lightweight, making it easier to transport and handle during installation. PVC pipe is also resistant to chemicals, making it suitable for applications where corrosion may be a concern. However, PVC pipe may not be as durable as ductile iron pipe, especially when subjected to external pressure or harsh environmental conditions. It may also be susceptible to cracking or breaking under extreme temperatures. In terms of cost, PVC pipe is generally less expensive than ductile iron pipe. PVC pipe is manufactured using less costly materials and is easier to produce, resulting in lower production costs. Additionally, the lightweight nature of PVC pipe reduces transportation costs and makes installation more efficient. Ductile iron pipe, on the other hand, tends to be more expensive due to the higher costs associated with its manufacturing process and the heavier weight, which requires additional handling and transportation expenses. Ultimately, the choice between ductile iron pipe and PVC pipe depends on the specific requirements of the project. If strength, durability, and longevity are crucial, ductile iron pipe may be the preferred option despite its higher cost. However, for applications that require versatility, ease of installation, and cost-effectiveness, PVC pipe can be a suitable alternative.

Q: How do ductile iron pipes perform in high-velocity water flow conditions?: Ductile iron pipes perform excellently in high-velocity water flow conditions. Their inherent strength and durability allow them to withstand the force and turbulence of fast-flowing water without any significant issues. These pipes have been extensively tested and proven to maintain structural integrity, resist erosion, and minimize the risk of leaks or bursts, making them a reliable choice for high-velocity water flow applications.

Q: What are the interface forms of ductile iron pipes? The best drawings are available. Thank you: There are many kinds of ductile iron pipe interfaces, and the T type interface (sliding type) flexible interface is famous for its fast installation and simple installation.

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