DUCTILE IRON PIPE DN500 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: What are the lubricants for the installation of ductile iron pipes for tap water?: When choosing lubricant, it is necessary to consider the movement of friction pairs, materials, surface roughness, working environment and working conditions, as well as the performance of lubricants. In mechanical equipment, lubricants are mostly distributed by lubrication to the parts that need lubrication.

Q: How is ductile iron pipe different from cast iron pipe?: Ductile iron pipe and cast iron pipe are both commonly used for various plumbing and drainage applications. However, they differ in terms of their composition, strength, and flexibility. Firstly, ductile iron pipe is made from a different type of iron alloy compared to cast iron pipe. Ductile iron contains a higher percentage of carbon and silicon, which gives it enhanced strength and durability. On the other hand, cast iron pipe is made from gray iron, which has a higher carbon content but lacks the flexibility of ductile iron. Secondly, ductile iron pipe is known for its superior strength and impact resistance. It can withstand higher pressures and is less prone to cracking or breaking under heavy loads or external forces. Cast iron pipe, while strong, is more brittle and can be prone to fractures and failures. Another significant difference is the flexibility of ductile iron pipe. It has a greater degree of flexibility and can withstand bending and deformation without breaking. This flexibility allows for easier installation, especially in areas with uneven terrain or where ground movement may occur. In contrast, cast iron pipe is less flexible and more rigid, making it less suitable for certain applications where flexibility is essential. Additionally, ductile iron pipe has a smoother interior surface compared to cast iron pipe. This smoothness reduces friction, improves flow efficiency, and minimizes the accumulation of sediment and deposits within the pipe, resulting in better water flow and reduced maintenance requirements. In summary, ductile iron pipe differs from cast iron pipe in terms of its composition, strength, flexibility, and interior surface smoothness. Ductile iron offers superior strength, impact resistance, and flexibility, making it a preferred choice in various plumbing and drainage applications.

Q: What new technologies are there for the installation of ductile iron pipes?: The latest installation technology is the use of cast iron pipe special installation tools, a person can be convenient and efficient operation, 5 minutes an interface, very convenient, called cast iron pipe installation tool, you can search.

Q: What is the relationship between continuous cast iron pipe and ductile iron pipe?: In general, the continuous cast iron pipe is the continuous casting of gray cast iron pipe, while the centrifugal cast iron pipe is centrifugal ductile iron pipe. Of course, you have to be hard, just to make continuous ductile iron pipes, that's what you want.

Q: How are ductile iron pipes protected against interior corrosion?: Ductile iron pipes are protected against interior corrosion through a process known as cement mortar lining. This involves applying a layer of cement mortar to the interior surface of the pipe. The cement mortar acts as a protective barrier, preventing the corrosive elements in the water or fluid from coming into direct contact with the iron material. To apply the cement mortar lining, the interior surface of the ductile iron pipe is first prepared by removing any loose scale or debris. Then, a cement mortar mixture is prepared by combining cement, sand, and water to form a paste-like consistency. This mixture is then applied to the pipe's interior surface using a spinning machine or manually by skilled workers. Once the cement mortar lining is applied, it is left to cure for a specific period of time, typically around 24 hours. During this curing process, the cement mortar hardens and forms a dense protective layer on the pipe's interior surface. The cement mortar lining offers various benefits in protecting ductile iron pipes against corrosion. It provides a smooth and continuous surface that prevents the water or fluid from directly contacting the iron material, reducing the risk of corrosion. Additionally, the cement mortar lining also helps to reduce the friction within the pipe, improving flow efficiency. Regular inspection and maintenance of the cement mortar lining are essential to ensure its effectiveness in preventing corrosion. Over time, the lining may develop cracks or deteriorate, which can compromise its protective properties. Therefore, it is important to periodically inspect the lining and repair or replace it as needed to maintain the integrity of the ductile iron pipes and prevent interior corrosion.

Q: How are ductile iron pipes different from PVC pipes?: Ductile iron pipes and PVC pipes are utilized extensively in plumbing and water distribution systems, but they differ significantly in terms of their composition and properties. Ductile iron pipes are crafted from a particular form of cast iron that contains graphite nodules, which provide the material with ductility and flexibility. Consequently, these pipes can endure high pressures and heavy loads without succumbing to breakage or cracking. Ductile iron pipes are renowned for their robustness and longevity, making them particularly suitable for underground applications and areas with substantial traffic. Conversely, PVC pipes are constructed from a plastic known as polyvinyl chloride. These pipes possess rigidity and lack the same level of strength as ductile iron pipes. PVC pipes are commonly employed in low-pressure scenarios, such as residential plumbing systems, irrigation, and drainage systems. These pipes are lightweight, easy to install, and resistant to corrosion, rendering them a favored option for residential and non-industrial purposes. The cost disparity between ductile iron pipes and PVC pipes represents another distinction. Due to higher material and production expenses, ductile iron pipes tend to be pricier. Conversely, PVC pipes are relatively inexpensive to manufacture, making them a cost-effective choice for numerous plumbing projects. In summary, the primary disparities between ductile iron pipes and PVC pipes involve their composition, strength, flexibility, and cost. Ductile iron pipes, formed from cast iron, are celebrated for their strength and durability, while PVC pipes, formed from plastic, are lighter and more cost-effective. The selection between these two types of pipes depends on the specific demands of the plumbing project, including pressure, load-bearing capacity, and budgetary considerations.

Q: How to correctly measure ductile iron pipe: Ductile pipe diameter is around the tube around the peripheral measurement, use tools to gauge the inner diameter of the pipe, the length of the pipe is used to measure the ruler or tape, ductile iron pipe wall thickness can be measured directly, may also be a suitable tool for indirect measurement, the general profession will experience with project measure tube the size.

Q: What are the common causes of failure in ductile iron pipes?: Ductile iron pipes can fail for various reasons. Corrosion is a significant factor. When exposed to water, soil, and other environmental elements, rust and corrosion can develop on the pipe's surface. This weakens the pipe's structure and eventually causes failure. Improper installation or mishandling is another common cause. If the pipes are not correctly installed or if they sustain damage during transportation or installation, they may develop cracks, fractures, or other physical defects. These issues compromise the pipe's functionality and contribute to failure. Inadequate design can also lead to failure. When a pipe is not designed to withstand expected loads, pressures, or environmental conditions, it becomes vulnerable to premature failure. It is crucial to carefully consider material properties, wall thickness, and diameter during the design process to ensure the pipe can handle the demands placed upon it. Failure can also result from poor maintenance and delayed repairs. Regular inspections, maintenance, and timely repairs are essential for identifying and addressing issues before they worsen. Neglecting these measures can lead to the gradual deterioration of the pipe, increasing the likelihood of failure. Lastly, external factors such as soil movement, seismic activity, or excessive traffic loads can cause failure in ductile iron pipes. These forces exert stress on the pipe, resulting in cracks, fractures, or complete failure. To prevent failure in ductile iron pipes, it is crucial to employ proper corrosion protection techniques, adhere to correct installation procedures, consider design factors adequately, implement regular maintenance and repair programs, and account for external factors during the planning and installation process.

Q: What is the external coating used in ductile iron pipes?: The external coating commonly used in ductile iron pipes is a protective layer made of either cement mortar or polyethylene.

Q: Are ductile iron pipes suitable for sewage treatment plants?: Yes, ductile iron pipes are suitable for sewage treatment plants. Ductile iron is a strong and durable material that can withstand the harsh operating conditions found in sewage treatment plants. It has high tensile strength and excellent corrosion resistance, which makes it resistant to the corrosive effects of sewage and other chemicals found in wastewater. Additionally, ductile iron pipes have a smooth interior surface that allows for efficient flow of wastewater, reducing the risk of clogs or blockages. They are also easy to install and maintain, making them a cost-effective choice for sewage treatment plants. Overall, ductile iron pipes are a reliable and long-lasting option for transporting sewage in these facilities.

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