DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN800

DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN800

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 23 pc

Supply Capability:: 3000 pc/month

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Duct Iron Pipe DI Pipe ISO 2531 DN 80-2000mm PN 16

· 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: What is the expected thermal expansion coefficient of ductile iron pipes?: The expected thermal expansion coefficient of ductile iron pipes typically ranges from 10.8 to 12.2 x 10^-6 per degree Celsius.

Q: How is ductile iron pipe manufactured?: Ductile iron pipe is manufactured through a specific process known as centrifugal casting. The process starts with the melting of iron in a furnace, where specific elements such as carbon and silicon are added to achieve the desired properties. Once the iron is melted, it is poured into a spinning mold or a die that is rotating at a high speed. As the molten iron is poured into the rotating mold, centrifugal force pushes the liquid metal towards the inner surface of the mold. This force causes the metal to solidify from the outer surface inward. This results in a pipe with a dense outer layer and a more porous inner layer. The centrifugal casting process ensures that the pipe's outer surface is free from impurities and defects, ensuring its strength and durability. After the pipe has solidified, it is removed from the mold and undergoes further processing. The pipe is cleaned, excess material is trimmed off, and any surface imperfections are removed. It is then treated with a protective coating, such as zinc or epoxy, to enhance its corrosion resistance. The final step in the manufacturing process is quality control and testing. Ductile iron pipes are subjected to various tests to ensure they meet the required standards, including hydrostatic pressure testing, dimensional inspection, and internal and external coating inspection. In summary, ductile iron pipe is manufactured through the centrifugal casting process, which involves melting iron, pouring it into a rotating mold, and allowing it to solidify under centrifugal force. The resulting pipe is then cleaned, coated, and undergoes rigorous quality control to ensure its strength, durability, and adherence to standards.

Q: Are ductile iron pipes resistant to seismic events?: Generally, ductile iron pipes exhibit resistance to seismic events. Ductile iron, a form of cast iron known for its strength and durability, can withstand external forces, including those induced by seismic events like earthquakes. The design of ductile iron pipes allows for flexibility, enabling them to absorb and dissipate energy from seismic waves. This flexibility ensures the pipes remain intact despite ground movements and vibrations, preventing any breakage or cracking. Moreover, the joints of these pipes are designed to offer some level of flexibility, further enhancing their ability to withstand seismic events. Furthermore, the construction of ductile iron pipes involves thick walls, providing them with exceptional structural integrity. This strength reduces their susceptibility to damage during seismic events and ensures a consistent flow of fluids, such as water, even in extreme conditions. Nonetheless, it is crucial to recognize that the resistance of ductile iron pipes to seismic events can depend on various factors. These factors include the magnitude and proximity of the earthquake, the quality of installation and maintenance, and the specific design considerations for the pipeline system. Consequently, it is vital to adhere to proper engineering and construction practices to optimize the resilience of ductile iron pipes in areas prone to seismic activity.

Q: Are ductile iron pipes suitable for desalination plants?: Yes, ductile iron pipes are suitable for desalination plants. Desalination plants typically require the transportation of large volumes of water, and ductile iron pipes offer several advantages that make them suitable for this purpose. Firstly, ductile iron pipes have excellent strength and durability, which is essential for withstanding the high pressure and corrosive nature of the desalinated water. They can handle the high flow rates and maintain structural integrity over long distances, ensuring a reliable and efficient water transport system. Additionally, ductile iron pipes have good resistance to corrosion, which is crucial in desalination plants where the water may contain high levels of salt and other minerals. The corrosion resistance properties of ductile iron pipes ensure that the water quality is not compromised and that the pipes have a long service life, reducing maintenance and replacement costs. Furthermore, ductile iron pipes have a high impact resistance, which is important in desalination plants where pipelines may be subjected to external forces or accidental damage. Their ability to withstand such impacts reduces the risk of leaks, ensuring the continuous and uninterrupted supply of water. Moreover, ductile iron pipes are also cost-effective compared to other pipe materials such as stainless steel or PVC. They have a lower initial cost and require less maintenance, making them a more economical choice for desalination plants. In conclusion, ductile iron pipes are indeed suitable for desalination plants due to their strength, durability, corrosion resistance, impact resistance, and cost-effectiveness. These pipes can effectively handle the demanding requirements of desalination plants, providing a reliable and efficient water transport system.

Q: How does ductile iron pipe perform in high-velocity flow conditions?: Ductile iron pipe performs exceptionally well in high-velocity flow conditions. Due to its unique properties, including high tensile strength and impact resistance, ductile iron pipe can withstand the forces exerted by high-velocity flows without experiencing significant damage or failure. One of the key advantages of ductile iron pipe is its ability to resist the effects of water hammer, which is a sudden increase in pressure caused by the rapid deceleration or change in direction of water flow. This is particularly important in high-velocity flow conditions where the velocity of water is significantly higher than normal. Ductile iron pipes are designed to absorb and dissipate the energy generated by water hammer, preventing potential damage to the pipe and the surrounding infrastructure. Additionally, ductile iron pipe has excellent flow characteristics, allowing for smooth and efficient water transport even at high velocities. This is crucial in applications where a large volume of water needs to be transported quickly, such as in industrial processes or fire protection systems. The smooth interior surface of ductile iron pipe minimizes friction and pressure losses, ensuring that the water can flow freely and efficiently, reducing energy consumption and operating costs. Moreover, ductile iron pipe is highly resistant to corrosion, which is a common issue in high-velocity flow conditions where the water may contain aggressive chemicals or particulates. The protective lining and coating systems used in ductile iron pipes provide a barrier against corrosion, extending the lifespan of the pipe and maintaining its structural integrity. In summary, ductile iron pipe is well-suited for high-velocity flow conditions due to its ability to withstand water hammer, its excellent flow characteristics, and its resistance to corrosion. Its strength, durability, and reliable performance make it a preferred choice for various applications, ensuring efficient water transport even in demanding environments.

Q: Are ductile iron pipes suitable for airport runway drainage?: Yes, ductile iron pipes are suitable for airport runway drainage. Ductile iron pipes are known for their durability, strength, and resistance to corrosion, making them an ideal choice for handling heavy loads and withstanding harsh environmental conditions typically found on airport runways.

Q: Can ductile iron pipes be used in oil or gas transmission pipelines?: Yes, ductile iron pipes can be used in oil or gas transmission pipelines. Ductile iron pipes have excellent strength, durability, and corrosion resistance, making them suitable for transporting oil or gas over long distances. Additionally, their flexible nature allows them to withstand ground movements and reduce the risk of fractures or leaks in the pipeline system.

Q: Can ductile iron pipes be used for cooling water systems?: Indeed, cooling water systems can utilize ductile iron pipes. Renowned for their resilience, robustness, and resistance to corrosion, ductile iron pipes are a fitting choice for various applications, including cooling water systems. With the ability to withstand high pressure and temperature fluctuations, these pipes excel in circulating and transporting cooling water. Moreover, their smooth interior surface mitigates friction, diminishing the likelihood of scaling or blockages and enabling the efficient flow of cooling water. Consequently, ductile iron pipes emerge as a dependable and efficient option for cooling water systems.

Q: What is the expected deflection capability of ductile iron pipes?: The expected deflection capability of ductile iron pipes is typically quite high compared to other pipe materials. Ductile iron pipes have a flexible nature that allows them to withstand external loads and stresses without breaking or cracking. This flexibility enables the pipes to deflect under pressure, absorbing the force and redistributing it evenly along the pipe's length. The specific deflection capability of ductile iron pipes can vary depending on factors such as pipe diameter, wall thickness, and soil conditions. However, in general, ductile iron pipes can typically deflect up to 2% to 5% of their diameter without causing any significant damage or compromising their structural integrity. This deflection capability allows the pipes to adapt to ground movement, thermal expansion, and other external forces, making them highly resilient and reliable for various applications. It is important to note that the deflection capability of ductile iron pipes should be considered in conjunction with other design criteria, such as the depth of the pipe burial, trench width, and backfill material. Following proper installation practices and adhering to industry standards and specifications will ensure that the expected deflection capability of ductile iron pipes is optimized and maintained throughout their service life.

Q: Do ductile iron pipes require external protection against stray electrical currents?: Yes, ductile iron pipes do require external protection against stray electrical currents. Stray electrical currents can cause corrosion to the pipe, leading to premature failure and potential leaks. To protect against this, external coatings or wraps are applied to the ductile iron pipes to provide a barrier between the pipe and the electrical currents. This protection helps to ensure the longevity and reliability of the pipes, preventing costly repairs and potential safety hazards.

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