DUCTILE IRON PIPES AND PIPE FITTINGS K9 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: Are ductile iron pipes suitable for installation in areas with high groundwater salinity?: Ductile iron pipes are generally suitable for installation in areas with high groundwater salinity. Ductile iron is known for its corrosion resistance, making it a preferred choice for various applications, including water and wastewater systems. High groundwater salinity refers to an increased presence of dissolved salts in the water. While this can potentially cause corrosion in certain materials, ductile iron pipes are designed to withstand such conditions. Ductile iron pipes have a protective lining, typically made of cement mortar or polyurethane, which acts as a barrier between the pipe and the surrounding environment, including high salinity water. The lining helps to prevent any corrosive effects of the high groundwater salinity on the iron pipe, ensuring its long-term durability and reliability. Additionally, ductile iron pipes have a high tensile strength, allowing them to withstand external loads and pressure, even in challenging environments. It is important to note that the suitability of ductile iron pipes for areas with high groundwater salinity can also depend on factors such as the specific levels of salinity, the presence of other corrosive agents, and the overall design and installation practices. Therefore, it is recommended to consult with experts or engineers familiar with the local conditions to determine the most appropriate materials and precautions for specific installation projects.

Q: How does ductile iron pipe handle soil movements and settlements?: Ductile iron pipe has excellent resistance to soil movements and settlements due to its high tensile strength and flexibility. The pipe's ability to withstand soil loads and settle without compromising its structural integrity makes it a reliable choice for underground applications. Additionally, the pipe's joint design allows for some degree of movement, further reducing the risk of damage or failure.

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 are ductile iron pipes restrained against axial thrust forces?: Axial thrust forces are effectively restrained in ductile iron pipes by utilizing both mechanical restraints and soil resistance. A commonly employed method involves the use of thrust blocks, which are concrete structures constructed at bends, tees, and other directional changes in the pipeline. These blocks are specifically designed to withstand axial forces and prevent any shifting or movement of the pipes caused by the pressure exerted by the flowing fluid. Furthermore, additional support and prevention of axial movement are achieved through the implementation of mechanical restraints, such as pipe restraints, thrust collars, and anchor blocks. Pipe restraints are devices installed around the pipe and connected to adjacent structures, such as walls or concrete collars, in order to prevent any sort of movement. Thrust collars, on the other hand, are utilized to absorb and distribute the thrust forces generated by the flowing fluid. These collars, typically made of ductile iron or steel, are securely fastened around the pipe to counteract axial movement. Moreover, soil resistance plays a crucial role in restraining axial thrust forces. The weight of the soil surrounding the pipe creates frictional resistance, which effectively counteracts the axial forces. In order to ensure effective soil resistance, it is vital to properly backfill the trench, compact the soil, and adequately embed the pipe in the soil. In conclusion, a comprehensive approach involving the use of mechanical restraints such as thrust blocks, pipe restraints, and thrust collars, along with the soil resistance provided by proper trench backfilling and compaction, is employed to restrain axial thrust forces in ductile iron pipes. This approach guarantees the secure placement of the pipes and their ability to withstand the axial forces exerted by the flowing fluid.

Q: What is the expected fire resistance of ductile iron pipes?: The expected fire resistance of ductile iron pipes can vary depending on several factors such as the thickness of the pipe walls, the quality of the installation, and the surrounding conditions. However, generally speaking, ductile iron pipes have a high fire resistance due to their durable and heat-resistant material composition. Ductile iron is made by adding a small amount of magnesium to cast iron, which enhances its strength and flexibility. This makes ductile iron pipes less susceptible to cracking or breaking under high temperatures compared to other materials like PVC or HDPE pipes. In terms of fire resistance, ductile iron pipes can withstand high temperatures for an extended period of time without significant structural damage. They have been tested and proven to maintain their integrity in fire conditions for up to 2-4 hours, depending on the specific pipe design and installation. It is important to note that while ductile iron pipes have a high fire resistance, they are not fireproof. In case of a fire, it is crucial to follow proper fire safety protocols and consult with professionals to ensure the safety of the system and surrounding infrastructure.

Q: The design uses water supply ductile iron pipe, PE corrosion protection pipe, HDPE pipe, please ask that good? What's the price of the two?: Ductile iron pipes are difficult to make and do not make money, and even easy to lose money, it is not recommended to do, the price can be found on Baidu. DN100 6, about 400 yuan ~500 yuan, DN200,6 about 900 yuan ~1000 yuan, when the market to buy to ask a length. Difficult to do in ductile pipe easily affected by topography (when digging the trenching dug in front of the back of their repair, trouble), vulnerable to local soil effects (such as settlement). Parts connection is not fixed, easy to leak. The advantage is that once the installation is completed, the pressure test is successful and is used for life.

Q: How does ductile iron pipe compare to steel pipe in terms of durability?: Ductile iron pipe and steel pipe possess distinct characteristics, but when it comes to durability, ductile iron pipe holds several advantages over its steel counterpart. To begin with, ductile iron pipe boasts exceptional resistance to corrosion. It incorporates a protective layer of zinc or cement lining that safeguards it against rust and corrosion, enhancing its durability and reducing the likelihood of leaks or failures. Conversely, steel pipe is vulnerable to corrosion, particularly when exposed to moisture or specific chemicals. This susceptibility can lead to structural problems and diminish its overall durability. Furthermore, ductile iron pipe exhibits remarkable impact resistance. It can endure substantial loads and external pressures without cracking or breaking, rendering it suitable for applications in high-traffic areas or situations where the pipe may be subject to accidental impacts. Steel pipe, despite its strength, can be more brittle and prone to fractures under similar circumstances. Moreover, ductile iron pipe boasts a longer service life compared to steel pipe. With proper maintenance, it has been known to endure for over a century, making it a dependable and long-lasting choice for infrastructure projects. Steel pipe, although still durable, may necessitate more frequent inspections and maintenance to ensure its longevity. In conclusion, ductile iron pipe surpasses steel pipe in terms of durability due to its corrosion resistance, impact resistance, and extended service life. Nevertheless, the selection between the two ultimately depends on the specific application, budgetary constraints, and other project requirements.

Q: Are ductile iron pipes suitable for installation in rocky or hard soil conditions?: Yes, ductile iron pipes are suitable for installation in rocky or hard soil conditions. Ductile iron pipes are known for their strength and durability, making them well-suited for challenging soil conditions. Their high tensile strength allows them to withstand external loads and pressures, including the presence of rocks or hard soil. Additionally, ductile iron pipes are resistant to corrosion, which further enhances their suitability for installation in such conditions. The pipes' flexibility and ability to withstand bending stresses also make them a reliable choice for rocky or hard soil conditions, as they can accommodate ground movement without compromising their structural integrity. Overall, ductile iron pipes are a preferred option for installations in challenging soil conditions due to their robustness, longevity, and resilience.

Q: How is ductile iron pipe protected against external corrosion?: Ductile iron pipe is protected against external corrosion through a variety of methods that ensure its durability and longevity. One common method is the application of protective coatings. The pipe is typically coated with a layer of zinc or asphaltic material, which acts as a barrier between the iron pipe and the surrounding environment. This coating helps to prevent direct contact between the pipe and corrosive elements such as soil, moisture, and chemicals, thereby reducing the risk of corrosion. Additionally, ductile iron pipes are often wrapped with a layer of polyethylene or polypropylene tape. This tape provides an extra layer of protection against external corrosion by serving as a physical barrier that shields the pipe from moisture and other potentially corrosive substances. The tape is applied with care to ensure complete coverage and adherence to the pipe's surface. Furthermore, cathodic protection is commonly employed to safeguard ductile iron pipes against external corrosion. This technique involves the installation of sacrificial anodes or impressed current systems near the pipe. These anodes generate a protective electrical current that counteracts the corrosion process, effectively inhibiting the deterioration of the pipe's surface. Lastly, proper installation practices play a crucial role in preventing external corrosion. It is essential to ensure that the pipe is buried at an appropriate depth, allowing for adequate soil coverage. This helps to minimize exposure to corrosive elements and maintain the integrity of the protective coatings. Additionally, proper backfilling techniques and the use of corrosion-resistant bedding materials can further enhance the pipe's resistance to external corrosion. In conclusion, ductile iron pipe is protected against external corrosion through a combination of protective coatings, tape wrapping, cathodic protection systems, and proper installation practices. These measures work together to provide a robust defense against the corrosive forces that the pipe may encounter, ensuring its longevity and reliability in various applications.

Q: Can ductile iron pipes be used for stormwater drainage systems?: Indeed, stormwater drainage systems can utilize ductile iron pipes. These pipes are renowned for their strength, durability, and resistance to corrosion, rendering them appropriate for various applications, including stormwater drainage. They possess the capacity to accommodate substantial water flow and endure heavy traffic loads, making them a reliable selection for stormwater management. Moreover, ductile iron pipes exhibit exceptional joint performance, guaranteeing a watertight and secure connection, a critical aspect in preventing leaks and preserving the integrity of the stormwater drainage system. All in all, due to their sturdiness, longevity, and ability to withstand the challenging conditions typically associated with stormwater management, ductile iron pipes present a viable choice for stormwater drainage systems.

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