DUCTILE IRON PIPE DN900 K8/C/K9 System 1

DUCTILE IRON PIPE DN900 K8/C/K9 System 2

DUCTILE IRON PIPE DN900 K8/C/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 to choose a ductile cast iron pipe with guaranteed quality: 1, first of all choose the regular manufacturers of ductile iron pipe products.2, the choice of ductile iron pipe, should be based on the specific circumstances of the construction site, select the pipe and fittings corresponding to the form of interface.3, rubber rings recommend the use of three yuan ethylene propylene rubber ring and so on.4, listen to the voice, knocking the iron: short duration. The iron ball: crisp sound, echo, short duration5, the cutting surface is gray: gray, shiny surface seems very dark, very rough. Ductile iron: gray, gray luster is bright, like gray surface roughness.

Q: Can ductile iron pipes be used for pressure relief systems?: Indeed, pressure relief systems can make use of ductile iron pipes. Renowned for their robustness, longevity, and capacity to endure intense pressure circumstances, ductile iron pipes possess a remarkable resilience against both internal and external pressures. Consequently, they prove to be ideal for deployment within pressure relief systems. Furthermore, ductile iron pipes can withstand considerable fluctuations in pressure without jeopardizing their structural integrity. Consequently, they find widespread usage in various settings necessitating pressure relief systems, including water supply networks, wastewater treatment facilities, and industrial operations.

Q: What is the expected deflection range for ductile iron pipes?: Several factors, such as pipe diameter, wall thickness, soil conditions, and installation methods, can affect the expected deflection range for ductile iron pipes. Compared to materials like PVC or concrete pipes, ductile iron pipes generally have a higher deflection capacity. For ductile iron pipes with smaller diameters (up to 12 inches), the typical expected deflection range is around 2-3% of the pipe diameter. In other words, a 12-inch ductile iron pipe could potentially deflect by approximately 0.24-0.36 inches. On the other hand, larger diameter ductile iron pipes (greater than 12 inches) can have a slightly higher expected deflection range, ranging from 2-5% of the pipe diameter. For instance, a 24-inch ductile iron pipe could potentially deflect by approximately 0.48-1.2 inches. It is important to remember that these values are general estimates and should be confirmed with the manufacturer's specifications or engineering design guidelines specific to a particular project. Furthermore, following proper installation techniques and backfilling practices is crucial to ensure the structural integrity of the pipe and prevent excessive deflection.

Q: How does ductile iron pipe perform in areas with high soil erosion?: Ductile iron pipe is known for its exceptional strength and durability, making it a reliable choice for areas with high soil erosion. Its unique composition, which includes graphite nodules, allows it to be both flexible and resistant to fractures or cracks, even in challenging environments. This makes ductile iron pipe highly capable of withstanding the impact of soil erosion. In areas with high soil erosion, the soil particles can scrape against the surface of the pipe, potentially causing abrasions or damage. However, ductile iron pipe's thick wall thickness and corrosion-resistant coating provide an effective barrier against these abrasive forces. This means that even in areas with significant soil erosion, ductile iron pipe can maintain its structural integrity and functionality. Moreover, ductile iron pipe's ability to resist corrosion further enhances its performance in areas with high soil erosion. Soil erosion often leads to an increased presence of moisture, which can accelerate the corrosion process of certain materials. However, ductile iron pipe's protective coating, typically made from zinc or epoxy, acts as a shield against corrosion, ensuring its long-term performance and reliability. In summary, ductile iron pipe demonstrates excellent performance in areas with high soil erosion due to its strength, flexibility, and resistance to fractures or cracks. Its thick wall thickness and corrosion-resistant coating make it highly durable against abrasive forces and corrosion, allowing it to withstand the challenges posed by soil erosion. As a result, ductile iron pipe is a dependable choice for infrastructure projects in such areas, providing long-lasting and efficient water and wastewater transportation systems.

Q: What are the typical joint restraint requirements for ductile iron pipes under pressure?: In order to meet the joint restraint requirements for ductile iron pipes under pressure, there are two common options available: mechanical joint restraints and restrained joint systems. These restraints are essential to prevent separation or pulling apart of the pipes caused by internal pressure. A mechanical joint restraint, which is widely used, involves a series of bolts and clamps that securely hold the pipes together. These restraints are applied at each joint of the ductile iron pipes to ensure a tight and secure connection. By providing axial restraint, they prevent the pipes from separating along the pipe axis. Another option is the restrained joint system, which offers both axial and angular restraint. This system includes a specially designed joint that consists of a gasket, a restraining gland, and a series of bolts or wedges. The gasket ensures a watertight seal, while the restraining gland and bolts/wedges restrain the pipe joints, preventing separation under pressure. The specific requirements for joint restraints may vary depending on factors such as the pipe's diameter, wall thickness, and operating conditions. To determine the appropriate joint restraint system for a specific application, it is crucial to consult the manufacturer's guidelines and industry standards. Furthermore, proper installation and maintenance of the joint restraints are essential to ensure their effectiveness and longevity in restraining the pipes.

Q: Are ductile iron pipes suitable for irrigation canal systems?: Yes, ductile iron pipes are suitable for irrigation canal systems. Ductile iron pipes are known for their high strength and durability, making them ideal for withstanding the pressure and load requirements of irrigation canal systems. They have a high resistance to external loads, such as heavy machinery, and can handle the stress caused by soil movement and settlement. Additionally, ductile iron pipes are highly resistant to corrosion and provide a smooth inner surface, which minimizes friction and ensures efficient water flow. This is crucial for irrigation systems as it allows for the effective distribution of water to crops, ensuring optimal growth and yield. Ductile iron pipes also have a long service life, typically exceeding 100 years, which makes them a cost-effective option for irrigation canal systems. Their low maintenance requirements further contribute to their suitability for this application. Overall, ductile iron pipes offer the necessary strength, durability, corrosion resistance, and efficiency required for irrigation canal systems, making them a suitable choice for this purpose.

Q: Can ductile iron pipes be used in dam or reservoir projects?: Yes, ductile iron pipes can be used in dam or reservoir projects. Ductile iron pipes are known for their strength, durability, and corrosion resistance, making them suitable for various applications, including water distribution and transmission systems. In dam or reservoir projects, where the pipes need to withstand high pressure and carry large volumes of water, ductile iron pipes are often preferred. They have excellent mechanical properties, including high tensile strength and impact resistance, which ensure their ability to handle the load and provide a reliable and long-lasting solution. Additionally, ductile iron pipes are also adaptable to various installation methods, including trenchless techniques, making them a versatile choice for dam or reservoir projects.

Q: How do ductile iron pipes handle water hammer?: Ductile iron pipes are known for their excellent resistance to water hammer, which refers to the sudden increase in pressure and velocity of water flow within a pipe system. This phenomenon occurs when there is a sudden change in the water's velocity, such as when a valve is closed abruptly or a pump is suddenly shut off. Ductile iron pipes are designed to withstand high-pressure surges caused by water hammer. Their enhanced strength and flexibility enable them to absorb and dissipate the energy generated during these pressure surges. The ductility of the material allows the pipe to deform slightly under the impact of the water hammer, preventing the pipe from rupturing or breaking. Moreover, ductile iron pipes have inherent damping properties, which means they can absorb and dissipate the energy of water hammer more effectively compared to other pipe materials. This helps to reduce the intensity and duration of the pressure surges, minimizing the potential damage to the pipe system and its components. Additionally, ductile iron pipes are often equipped with various fittings and accessories that further enhance their ability to handle water hammer. These include specialized joint designs, such as restrained joints or flexible couplings, which provide additional flexibility and resistance to pressure surges. Overall, ductile iron pipes are specifically engineered to handle the challenges posed by water hammer. Their strength, flexibility, damping properties, and specialized fittings make them an ideal choice for applications where water hammer is a concern, providing a reliable and durable solution for water distribution systems.

Q: Can ductile iron pipes be used for wastewater treatment plants?: Yes, ductile iron pipes can be used for wastewater treatment plants. Ductile iron pipes are known for their strength, durability, and corrosion resistance, making them suitable for handling the harsh and corrosive environments typically found in wastewater treatment plants. Additionally, their flexibility and ability to withstand heavy loads make them ideal for underground installations and high-pressure applications commonly found in wastewater treatment systems.

Q: Can ductile iron pipes be used for irrigation systems in agricultural fields?: Yes, ductile iron pipes can be used for irrigation systems in agricultural fields. Ductile iron is known for its durability, corrosion resistance, and ability to withstand high pressure, making it suitable for transporting water in agricultural irrigation systems.

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