DUCTILE IRON PIPE DN1600

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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:Why does the cast iron pipe always run off when testing?: The pipeline is installed, straight section of each pipe will be added pier, concrete pipe, elbow, three links should also have concrete pier, specific installation method according to GB Atlas 03SS515, and the straight pipe to soil, pipeline interface will be exposed, easy to check.

Q:Are ductile iron pipes resistant to root intrusion?: Ductile iron pipes are generally resistant to root intrusion, but not entirely immune. While the material itself is strong and durable, root intrusion can still occur through any cracks, joints, or damaged sections of the pipe. It is important to note that root intrusion is more common in older or poorly maintained pipes, where cracks or gaps may develop over time. However, modern ductile iron pipes are often coated with protective layers or linings to minimize the risk of root intrusion. Additionally, regular inspection and maintenance can help detect and address any potential issues before they escalate.

Q:Are ductile iron pipes resistant to abrasion?: Indeed, abrasion is no match for ductile iron pipes. Ductile iron, a form of cast iron fortified with magnesium, undergoes this treatment to enhance its robustness and malleability. Consequently, it becomes exceptionally resistant to deterioration, including abrasion. These pipes find widespread use in scenarios where they encounter abrasive substances like sand, gravel, and other particles during fluid transportation. The material's remarkable capacity to endure abrasion guarantees its endurance and dependability across diverse sectors, ranging from water distribution and sewer systems to industrial pipelines.

Q:Can ductile iron pipe be used for both water and sewage applications?: Ductile iron pipe is versatile and can be used for both water and sewage applications. It is known for its strength, durability, and corrosion resistance, making it suitable for various purposes. With its high tensile strength, it can withstand the pressure and heavy loads associated with water and sewage systems. Its smooth interior surface minimizes friction and enhances flow efficiency, making it perfect for transporting water and sewage. It also has excellent resistance to corrosion and chemical attack, ensuring a long lifespan even in harsh environments. Moreover, ductile iron pipe comes in various sizes and configurations, allowing for customization to meet specific water and sewage requirements. In conclusion, ductile iron pipe is a reliable and adaptable option for water and sewage conveyance.

Q:What is the expected bedding and backfill requirements for ductile iron pipes?: To ensure the longevity and proper functioning of ductile iron pipes, it is crucial to meet the expected bedding and backfill requirements. Although these pipes are known for their durability and strength, careful installation is still necessary to prevent any potential damage or compromised performance. The bedding requirements for ductile iron pipes entail establishing a stable and uniform support system to distribute the loads and stresses from the surrounding soil. The pipe should be surrounded by a bedding material that is devoid of rocks, debris, or any sharp objects that could potentially cause harm. Moreover, the bedding material should be adequately compacted to prevent settlement or shifting, which could result in misalignment or pipe failure. Typically, a granular material such as sand or fine aggregate is employed as the bedding material for ductile iron pipes, with a minimum thickness of 6 inches. This material should be evenly placed beneath and around the pipe to provide a continuous support system. Additionally, it should be compacted to at least 90% of the maximum dry density to ensure proper stability and load distribution. As for the backfill requirements, they pertain to the material used to fill the remaining space around the pipe after the bedding has been installed. Similar to the bedding material, the backfill material should be free from rocks, debris, or sharp objects to prevent damage. It should offer support and protection to the pipe while allowing for proper compaction and settling. The backfill material for ductile iron pipes typically consists of a granular substance such as sand or fine aggregate, with a maximum particle size of 1 inch. It should be placed and compacted in layers, ensuring that the compaction is uniform and even around the pipe. Sufficient compaction is crucial to avoid settlement or shifting of the backfill material, which could potentially harm or misalign the pipe. In conclusion, meeting the expected bedding and backfill requirements for ductile iron pipes necessitates the use of a granular material that is free from rocks, debris, or sharp objects. This material should be evenly placed and compacted to provide stable support and protection to the pipe. Adhering to these requirements will help ensure the proper functioning and longevity of ductile iron pipe systems.

Q:How are ductile iron pipes protected against interior corrosion?: Ductile iron pipes are protected against interior corrosion through a process called cement-mortar lining. This involves applying a thick layer of cement mortar to the interior surface of the pipes, which acts as a protective barrier against corrosion caused by the flow of water or other substances. Additionally, corrosion-resistant coatings can also be applied to the pipes to provide further protection.

Q:How are ductile iron pipes protected against freeze-thaw cycles?: Several measures are taken to protect ductile iron pipes from freeze-thaw cycles. Firstly, the material used in these pipes is naturally resistant to low temperatures, allowing them to withstand freezing conditions without becoming brittle or prone to cracking. Furthermore, a protective layer such as cement mortar lining or polyethylene encasement is often applied to the pipes. This extra barrier helps insulate the pipe and prevents direct contact between the iron and the surrounding environment, reducing the risk of freeze-thaw damage. Moreover, ductile iron pipes are designed with joints that allow for movement and flexibility. This design feature helps accommodate any expansion or contraction that may occur during freeze-thaw cycles, minimizing the risk of pipe breakage or damage caused by freezing water pressure. Proper installation practices, including sufficient bedding and backfilling, are also crucial in protecting ductile iron pipes from freeze-thaw cycles. Adequate support and suitable materials surrounding the pipes help minimize the impact of freezing temperatures on the structural integrity of the pipes. Regular inspection and maintenance of ductile iron pipes are essential for identifying any potential issues resulting from freeze-thaw cycles. Periodic assessments can detect signs of damage or deterioration, allowing for timely repairs or replacement to prevent further damage. In conclusion, ductile iron pipes are safeguarded against freeze-thaw cycles through the material's inherent resistance, protective coatings, flexible joints, proper installation practices, and regular maintenance. These measures collectively ensure the durability and longevity of ductile iron pipes, even in cold weather conditions.

Q:Can ductile iron pipes be used for water supply in remote areas?: Ductile iron pipes are indeed suitable for water supply in remote areas. Renowned for their strength, durability, and versatility, these pipes are capable of serving various purposes, including water supply systems. Notably, their exceptional resistance to corrosion and ability to endure harsh environmental conditions renders them an ideal choice for remote areas with limited maintenance and repair services. Moreover, in comparison to alternative materials, ductile iron pipes boast a significantly longer lifespan, ensuring the sustained operation of water supply systems in remote areas. In summary, the reliability of ductile iron pipes for water supply in remote areas is attributable to their resilience, resistance to corrosion, and extended lifespan.

Q:What are the typical applications for ductile iron pipes?: Due to their unique properties and advantages, ductile iron pipes are commonly utilized in a wide range of applications. Some of the typical uses for these pipes include the following: 1. Water Supply Systems: Ductile iron pipes are extensively employed in municipal water distribution networks and other water supply systems. They are highly resistant to corrosion and possess remarkable durability. Their ability to withstand high pressure and provide a long service life makes them ideal for transporting potable water. 2. Wastewater and Sewage Systems: Ductile iron pipes are also widely utilized in wastewater and sewage systems. Their strength and resistance to chemical corrosion enable them to effectively transport sewage and other wastewater. These pipes are commonly found in underground sewer lines, sewer force mains, and wastewater treatment plants. 3. Industrial Applications: Ductile iron pipes find applications in various industrial sectors. They are commonly used for transporting different types of fluids, such as chemicals, slurries, and abrasive substances. Their strength, toughness, and resistance to external loads make them suitable for industrial pipelines in power plants, refineries, and mining operations. 4. Irrigation Systems: Ductile iron pipes are frequently employed in irrigation systems for agricultural purposes, landscaping, and golf courses. These pipes can withstand high water pressure and provide a reliable solution for transporting water over long distances. Their corrosion resistance ensures that water quality is maintained, while their durability reduces the need for frequent maintenance. 5. Fire Protection Systems: Ductile iron pipes are widely used in fire protection systems, including sprinkler systems and fire hydrants. Their strength and ability to withstand high pressure make them suitable for quickly delivering water during fire emergencies. Additionally, these pipes are resistant to heat, making them a reliable choice for fire protection applications. In conclusion, ductile iron pipes are versatile and extensively used in various applications, including water supply systems, wastewater and sewage systems, industrial pipelines, irrigation systems, and fire protection systems. Their durability, corrosion resistance, and ability to withstand high pressure make them a preferred choice for these applications.

Q:Are ductile iron pipes more resistant to breaks and cracks than other pipe materials?: Yes, ductile iron pipes are generally more resistant to breaks and cracks compared to other pipe materials. Their unique composition and manufacturing process make them highly durable and flexible, allowing them to withstand high pressure, heavy loads, and ground movement without breaking or cracking easily.

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