DUCTILE IRON PIPES AND PIPE FITTINGS K9 CLASS DN80

DUCTILE IRON PIPES AND PIPE FITTINGS K9 CLASS DN80

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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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Ductile Iron Pipe On Sale Made In China DN100

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: Ways of connecting ductile iron pipes: In accordance with the wall thickness or pressure capacity, ductile iron pipe is divided into K8, K9, K10, K11, K12 four class, where the contract does not indicate, according to K9 supply.

Q: What is the expected leakage rate for ductile iron pipes?: The expected leakage rate for ductile iron pipes can vary depending on various factors such as the age, condition, and installation methods of the pipes, as well as the quality of the materials used. However, ductile iron pipes are generally known for their durability and low leakage rates compared to other pipe materials. According to industry standards and research studies, the expected leakage rate for well-maintained ductile iron pipes can be as low as 0.1% per year. This means that, on average, less than 1 liter of water per meter of pipe length may leak annually. However, it is important to note that this is an average figure and actual leakage rates can vary. Regular maintenance and inspections play a crucial role in minimizing leaks and ensuring the longevity of ductile iron pipes. Additionally, proper installation techniques, such as using effective jointing methods and adequate bedding and backfill materials, can also contribute to reducing leakage rates. It is recommended to consult with industry professionals and adhere to applicable standards and regulations to determine the expected leakage rate for specific ductile iron pipe installations.

Q: Can ductile iron pipes be used for pressure relief systems?: Yes, ductile iron pipes can be used for pressure relief systems. Ductile iron pipes are known for their strength, durability, and ability to withstand high pressure conditions. They have a high resistance to internal and external pressures, making them suitable for use in pressure relief systems. Additionally, ductile iron pipes can handle significant changes in pressure without compromising their structural integrity. Therefore, they are commonly used in applications where pressure relief systems are required, such as water supply networks, wastewater treatment plants, and industrial processes.

Q: Can ductile iron pipes be used for geothermal heating and cooling systems?: Yes, ductile iron pipes can be used for geothermal heating and cooling systems. Ductile iron pipes are known for their strength and durability, making them suitable for underground applications like geothermal systems. They can withstand the high temperatures and pressure variations associated with geothermal heating and cooling, making them a reliable choice for this purpose.

Q: What is the minimum cover requirement for ductile iron pipes?: The specific project or engineering design considerations typically determine the minimum cover requirement for ductile iron pipes. However, as a general rule, it is often recommended to have a minimum cover requirement of at least 2 feet (or 0.6 meters) from the top of the pipe to the finished ground surface. This recommendation helps protect the pipe from external loads, soil settlement, and potential damage during construction activities. Additionally, it contributes to the long-term structural integrity and durability of the ductile iron pipe system. It is crucial to consult local building codes, industry standards, and project specifications for accurate and up-to-date information on specific minimum cover requirements.

Q: What kind of valves are commonly used in ductile iron pipes?: Gate valve, butterfly valve, globe valve, check valve flange of various valves, (but the pipeline used for water supply and some limitations of the transport medium may be prescribed valve type) now due to material improvements in the technology, in most cases, smaller pipe diameter is also large diameter pipe outlet valve, butterfly valve, because of the pipeline the large diameter pressure in the pipeline and water than the small caliber to open and close the valve, to human hard, efficiency is not high, so for butterfly valve,

Q: How are ductile iron pipes protected against external damage?: Ductile iron pipes are protected against external damage through a combination of various protective measures. One common method used is the application of a protective coating on the external surface of the pipe. This coating acts as a barrier, preventing the direct contact of the pipe with corrosive elements in the surrounding environment. The coating can be made of materials such as epoxy, polyurethane, or zinc, which provide excellent resistance against corrosion, abrasion, and chemical attacks. Additionally, ductile iron pipes can be further protected by encasing them in a concrete or cement mortar lining. This lining provides an extra layer of protection, reducing the chances of physical damage due to external impacts or soil movement. The concrete or cement mortar lining also helps to improve the pipe's hydraulic performance by reducing friction and maintaining a smooth flow of water or other fluids. Furthermore, ductile iron pipes are often installed with proper bedding and backfilling techniques. This involves using suitable materials such as sand or gravel to support and stabilize the pipe, minimizing the risk of external damage caused by uneven ground settlement or heavy loads. Adequate compaction of the backfill material is crucial to ensure the long-term integrity and stability of the pipe. Regular inspection and maintenance are also essential for protecting ductile iron pipes against external damage. Periodic inspections can identify any signs of corrosion, coating degradation, or physical damage, allowing for timely repairs or replacement before significant issues arise. Additionally, proper cathodic protection systems can be employed to prevent corrosion by applying an electric current that counteracts the electrochemical reactions occurring on the pipe's surface. In summary, ductile iron pipes are protected against external damage through the application of protective coatings, concrete or cement mortar linings, proper bedding and backfilling techniques, and regular inspections and maintenance. These measures collectively ensure the durability, longevity, and reliable performance of ductile iron pipes in various environments and applications.

Q: What is the expected flow capacity of ductile iron pipes?: The expected flow capacity of ductile iron pipes can vary depending on several factors such as the diameter and wall thickness of the pipe, the type of fluid being transported, and the specific design and condition of the pipeline system. Generally, ductile iron pipes are known for their high flow capacity due to their smooth internal surface which minimizes frictional losses. They are designed to handle a wide range of fluid flows, including water, sewage, and industrial fluids. In terms of specific flow rates, it is common to refer to the Manning's equation, which is widely used to calculate the flow capacity of open channels and pipes. This equation takes into account the hydraulic radius, slope of the pipe, and Manning's roughness coefficient to determine the expected flow capacity. However, it is important to note that the actual flow capacity can also be influenced by other factors such as the presence of fittings, valves, and bends in the pipeline, as well as any potential blockages or obstructions. Therefore, it is recommended to consult the manufacturer's specifications, engineering guidelines, or work with a qualified engineer to accurately determine the expected flow capacity of ductile iron pipes for a particular application.

Q: Can ductile iron pipes be used in areas with high levels of heavy metal contamination?: Ductile iron pipes can indeed be used in areas with high levels of heavy metal contamination. Ductile iron is a strong and durable material that is resistant to corrosion, making it suitable for various environmental conditions, including areas with heavy metal contamination. The high levels of heavy metals in the surrounding soil or water do not affect the structural integrity or performance of ductile iron pipes. These pipes have a protective lining, usually made of cement mortar or polyethylene, which acts as a barrier between the pipe and the surrounding environment. This lining prevents the heavy metals from leaching into the water flowing through the pipes. Furthermore, ductile iron pipes have been proven to be highly resistant to chemical corrosion, including the corrosion caused by heavy metals. They have been extensively used in industrial applications where heavy metal contamination is common, such as wastewater treatment plants, industrial facilities, and mining sites. However, it is important to note that while ductile iron pipes can withstand high levels of heavy metal contamination, regular monitoring and maintenance are still necessary. This ensures that the protective lining remains intact and any potential issues are addressed promptly. In summary, ductile iron pipes are a suitable choice for areas with high levels of heavy metal contamination. Their strength, durability, and resistance to corrosion make them reliable for transporting water and other fluids, even in challenging environments.

Q: Are ductile iron pipes resistant to freeze-thaw cycles?: Ductile iron pipes exhibit resistance against freeze-thaw cycles. Ductile iron, a variant of cast iron, is fortified with magnesium, which enhances its strength, durability, and ability to resist cracking. These improved material properties enable ductile iron pipes to withstand the expansion and contraction that occur during freeze-thaw cycles. Unlike PVC or concrete, which may fracture or shatter due to the pressure exerted by freezing water, ductile iron pipes remain intact without suffering substantial damage. Moreover, the smooth interior surface of ductile iron pipes prevents the accumulation of ice or frost, thereby augmenting their resistance to freeze-thaw cycles. In conclusion, ductile iron pipes are an optimal choice for water distribution systems in cold climates, as they provide exceptional resistance against the adverse effects of freezing and thawing.

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