DUCTILE IRON PIPES AND PIPE FITTINGS K8 CLASS DN800

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 22 pc

Supply Capability:: 3000 pc/month

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Material : Ductile Cast Iron
Size Range : DN 80mm to DN 2000mm
Unit Effective Length : 6m or 5.7m
Manufacture Standard: ISO 2531:1998/ EN 545:2006/EN 598:2007
Annual capacity : 200,000 tons
Coating Exterior: Zinc 130g/m2 according to ISO 8179-1 and bitumen coating 70 microns.
Cement Interior: Portland Cement/ High Alumina Cement/ Sulphate Resisting Cement Lining according to ISO 4179
Special requirements on external coating and internal lining can be applied
We also provide accessories such as SBR/EPDM rubber gaskets, lubricant paste, pipe caps, PE sleeves, etc.

Additional Parts:

Each pipe is strictly inspected according to related standard to ensure permanently high performance.
Easy Installation at site and service free for life
Long Service Lifespan
Quotation will arrive you within 24hours once we get your inquiry.
We guarantee offering you a competitive price.
A copy of original inspection reports of pipes will be offered after shipment.
Photos of loading process will be sent to the customer after shipment effect.
We will follow-up the delivery progress after shipment effect and update to the customer on weekly basis.

Q: Can ductile iron pipe be used for high-pressure gas systems?: Yes, ductile iron pipe can be used for high-pressure gas systems. Ductile iron pipes have excellent strength and durability, making them suitable for handling high-pressure gas applications. Additionally, their corrosion resistance properties make them an ideal choice for gas transmission systems.

Q: How do ductile iron pipes handle extreme temperatures?: Ductile iron pipes are highly resistant to extreme temperatures. They can handle both high and low temperatures without any significant impact on their performance. This is due to the unique properties of ductile iron, including its high thermal conductivity and low thermal expansion coefficient. These characteristics allow the pipes to remain stable and durable, making them suitable for a wide range of temperature conditions.

Q: How are ductile iron pipes protected against internal corrosion?: Ductile iron pipes are protected against internal corrosion through a process called cement mortar lining. This involves applying a layer of cement mortar to the inner surface of the pipe, creating a protective barrier between the iron and the water flowing through it. This lining helps to prevent the formation of rust, corrosion, and scale build-up, ensuring the longevity and durability of the pipes.

Q: What are the different methods for testing ductile iron pipe?: There are several methods available for testing ductile iron pipe to ensure its quality and reliability. These methods include: 1. Hydrostatic Testing: This is the most common method used for testing ductile iron pipe. It involves filling the pipe with water and pressurizing it to a specified level. The pipe is then inspected for any leaks or deformations under the applied pressure. Hydrostatic testing helps determine the pipe's ability to withstand internal pressure without failure. 2. Tensile Testing: This method involves subjecting a sample of the ductile iron pipe to a gradually increasing tensile load until it fractures. The test measures the ultimate tensile strength, yield strength, and elongation of the material. Tensile testing helps evaluate the pipe's mechanical properties and its ability to withstand tension without breaking. 3. Hardness Testing: This method measures the hardness of the ductile iron pipe using various techniques such as Brinell, Rockwell, or Vickers hardness tests. Hardness testing provides information about the material's resistance to deformation, wear, and fatigue. It helps assess the pipe's durability and resistance to external forces. 4. Impact Testing: This method involves striking a notched sample of the ductile iron pipe with a pendulum or falling weight to measure its impact resistance. The test determines the material's ability to absorb energy during sudden loading or impact. Impact testing helps evaluate the pipe's ability to withstand accidental impacts or dynamic loads. 5. Ultrasonic Testing: This non-destructive testing method uses high-frequency sound waves to detect internal defects or discontinuities in the ductile iron pipe. Ultrasonic testing can identify voids, cracks, or inclusions that may affect the pipe's structural integrity. It helps ensure the pipe's soundness and reliability. 6. Magnetic Particle Testing: This method is primarily used for detecting surface or near-surface defects in the ductile iron pipe. It involves applying a magnetic field to the pipe and then applying magnetic particles to the surface. Any defects present will cause the magnetic particles to gather and form visible indications. Magnetic particle testing helps identify surface cracks, laps, or other defects that may affect the pipe's performance. These different testing methods help ensure that ductile iron pipe meets industry standards and specifications, ensuring its quality and reliability in various applications.

Q: How is ductile iron pipe manufactured?: Ductile iron pipe is manufactured through a process called centrifugal casting. In this process, molten iron is poured into a spinning mold, causing the iron to be distributed evenly along the inner surface of the mold. As the mold cools, the iron solidifies and forms the pipe's shape. This method ensures a strong and durable pipe with excellent tensile strength and resistance to corrosion.

Q: What are the disadvantages of using ductile iron pipe?: Using ductile iron pipe comes with several disadvantages. To begin with, one major drawback is its cost. Ductile iron pipe tends to be pricier than alternative piping materials like PVC or traditional cast iron. This can make it less desirable for projects with tight budgets. Furthermore, ductile iron pipe is relatively heavy in comparison to other materials. This makes it more challenging to handle and install, requiring specialized equipment and additional labor. The weight also increases the risk of damage during transport and installation. Another disadvantage is its susceptibility to corrosion. While ductile iron is more resistant to corrosion than traditional cast iron, it is still prone to rust and deterioration over time. This can result in a reduced lifespan and potential leaks or pipe failures. In addition, ductile iron pipe has limited flexibility and is not as resistant to ground movement or settlement. This can lead to cracks or breaks in the pipe, especially in areas with unstable soil conditions or seismic activity. Finally, ductile iron pipe can have a rough interior surface, which can increase friction and decrease flow capacity. This results in higher pumping costs and decreased efficiency in fluid transportation. In conclusion, although ductile iron pipe offers advantages like strength and durability, it is important to carefully consider these drawbacks when selecting the appropriate piping material for a specific project.

Q: How does ductile iron pipe handle ground movement and settlement?: Ductile iron pipe is renowned for its exceptional capacity to accommodate ground movement and settlement. Thanks to its inherent strength and flexibility, it can endure substantial shifts in the ground without experiencing significant damage or failure. One of the primary advantages of ductile iron pipe is its remarkable tensile strength, enabling it to withstand external forces and pressures. This strength empowers the pipe to resist the effects of ground movement, such as soil settlement, subsidence, or shifting caused by seismic activity. Furthermore, ductile iron pipe possesses inherent flexibility, allowing it to absorb and distribute stress resulting from ground movement. The pipe's flexibility helps reduce the impact of settlement by enabling it to adapt and adjust to changes in the surrounding soil. This characteristic helps prevent the pipe from developing cracks, fractures, or leaks when the ground shifts or settles. Moreover, ductile iron pipes are frequently installed with flexible joints, such as push-on or mechanical joints, which further enhance their ability to accommodate ground movement. These joints provide a level of flexibility and movement, enabling the pipe to adapt to soil changes without experiencing concentrated stress or structural failure. Additionally, ductile iron pipe exhibits high resistance to corrosion, which is another crucial factor in its capacity to handle ground movement and settlement. Corrosion can weaken pipes and make them more vulnerable to damage during ground shifts. However, the corrosion-resistant properties of ductile iron help maintain the pipe's structural integrity and durability, even in challenging soil conditions. In conclusion, ductile iron pipe is ideally suited for handling ground movement and settlement due to its impressive tensile strength, flexibility, and corrosion resistance. These qualities enable the pipe to endure external forces and adapt to changes in the surrounding soil, minimizing the risk of damage, leaks, or failure.

Q: Can ductile iron pipe be used in corrosive environments?: Yes, ductile iron pipe can be used in corrosive environments. Ductile iron is known for its excellent corrosion resistance due to its protective oxide layer, making it suitable for various corrosive applications such as wastewater, chemical plants, and underground installations.

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: How are ductile iron pipes protected from external damage?: Ductile iron pipes are protected from external damage through the application of protective coatings. These coatings act as a barrier, shielding the pipes from corrosion and other forms of external damage. Additionally, the pipes may be encased in concrete or installed in a casing pipe to provide further protection against external forces and impacts.

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