DUCTILE IRON PIPES AND PIPE FITTINGS K9 CLASS DN100

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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: What is the maximum operating pressure for ductile iron pipes?: The maximum operating pressure for ductile iron pipes can vary depending on factors such as pipe diameter, wall thickness, and the specific application. However, in general, ductile iron pipes are designed to withstand pressures up to 350 psi (pounds per square inch) or even higher in some cases. It is important to note that local regulations, engineering standards, and manufacturer specifications should be consulted to determine the maximum operating pressure specific to a particular ductile iron pipe system.

Q: Are ductile iron pipes prone to external corrosion?: External corrosion is not typically a concern for ductile iron pipes. This is because the material itself has protective properties. Ductile iron pipes are composed of a durable and strong material with a significant amount of graphite. The graphite serves as a natural barrier against external corrosion, effectively preventing rust and oxidation. Furthermore, ductile iron pipes are often coated with a layer of protection, such as cement mortar or polyethylene, to further enhance their resistance to corrosion. These coatings provide an additional safeguard, preventing contact between the pipe and any corrosive substances in the environment. It is important to note, however, that localized corrosion may still occur under certain conditions. Factors such as soil composition, moisture levels, and the presence of specific chemicals can potentially lead to the corrosion of ductile iron pipes in specific areas. Therefore, regular inspections and proper maintenance are necessary to promptly identify and address any potential corrosion concerns. In conclusion, ductile iron pipes are generally highly resistant to external corrosion. Nonetheless, like any other material, they require appropriate care and maintenance to ensure their long-term durability and reliability.

Q: What are the typical installation methods for ductile iron pipe?: Proper installation and functionality of ductile iron pipe involve a series of steps. Firstly, the trench must be excavated to the required depth and width, considering the pipe diameter and bedding material. Careful preparation of the trench bottom is then necessary to remove sharp objects or debris that could damage the pipe. Next, an even layer of suitable bedding material, like sand or fine gravel, is placed along the trench bottom to support the pipe and prevent point loading. This bedding material is compacted to ensure stability and eliminate any voids that may cause pipe settling or shifting over time. Once the bedding is set, the ductile iron pipe is gently lowered into the trench, taking precautions to protect the pipe's coating. Regular intervals along the trench, appropriate pipe supports or blocks are used to align and support the pipes. After proper alignment, the joints are assembled by lubricating and inserting a rubber gasket into the bell end of the pipe. The spigot end of the adjacent pipe is then inserted into the bell end, creating a secure and watertight seal. With joints assembled, the backfilling process begins. Backfill material, typically a combination of native soil and select backfill, is carefully placed around the pipe in layers and compacted to ensure stability and prevent voids. Gradual backfilling allows for proper compaction without excessive pressure or pipe damage. Finally, the trench is fully backfilled and compacted to adequately support and protect the pipe from external forces. Surface restoration is then performed to minimize disruption caused by the installation process and restore the area to its original condition. It is important to note that installation methods may vary based on project specifications, local regulations, and engineering recommendations. Consulting the manufacturer's guidelines and working closely with qualified professionals is essential to ensure proper installation of ductile iron pipe.

Q: Can ductile iron pipes be used for water tunnel crossings?: Yes, ductile iron pipes can be used for water tunnel crossings. Ductile iron pipes are known for their strength, durability, and resistance to corrosion, making them a suitable choice for various applications, including water tunnel crossings. They are capable of withstanding high pressure, external loads, and ground movements, which are often encountered in tunnel crossings. Additionally, ductile iron pipes have a long service life and require minimal maintenance, making them a cost-effective solution for water tunnel crossings.

Q: What are the typical joint restraint requirements for ductile iron pipes?: The typical joint restraint requirements for ductile iron pipes include the use of mechanical joint restraints or push-on joint restraints. These restraints are necessary to prevent the pipe from separating or pulling apart under various operating conditions, such as internal pressure, external loads, and ground movement. Mechanical joint restraints are commonly used in applications where the pipe is subjected to high internal pressures or external loads. They typically consist of a gland and a follower gland, which are tightened around the pipe joint using bolts or clamps. This helps to secure the joint and prevent any movement or separation. Push-on joint restraints, on the other hand, are used in applications where the pipe is not subjected to high internal pressures or external loads. These restraints are designed to provide a seal and prevent the pipe from pulling apart due to ground movement or other external forces. They are installed by pushing the pipe into the joint and securing it with a restraining ring or collar. In addition to these joint restraints, it is also important to consider the bedding and backfill requirements for ductile iron pipes. Properly compacted and supportive bedding and backfill materials help to distribute the loads and provide stability to the pipe system, further enhancing its resistance to joint separation. It is worth noting that the specific joint restraint requirements for ductile iron pipes may vary depending on the project specifications, pipe size, and operating conditions. Therefore, it is important to consult the manufacturer's recommendations and engineering standards to ensure the proper selection and installation of joint restraints for ductile iron pipes.

Q: Can ductile iron pipe be used for fire protection systems?: Ductile iron pipe is indeed applicable for fire protection systems. Renowned for its robustness and longevity, ductile iron pipe proves to be an apt choice for multiple purposes, such as fire protection systems. Its remarkable tensile strength and ability to withstand cracking and fracture make it a dependable option for the conveyance of water and other fire suppression agents. Moreover, the corrosion resistance properties of ductile iron pipe guarantee enduring effectiveness and dependability within fire protection systems. Consequently, ductile iron pipe emerges as a fitting and frequently employed material for fire protection systems, owing to its strength, durability, and resistance to corrosion.

Q: What does ductile iron pipe "K" mean?: K means wall thickness registration, general water supply and drainage, now China uses K9, and some countries in South America, such as Brazil, use K7.The wall is thick =k (DN/1000+0.5), such as K9's DN500 tube, with a wall thickness of =9* (500/1000+0.5) =9mm

Q: The difference between spheroidal graphite cast iron pipe and HDPE water supply pipe: (4) HDPE pipes do not need corrosion protection. If the water supply pipeline is made of ductile iron pipe, the inner and outer walls of the ductile iron pipe shall be treated with corrosion protection.(5) the normal service life of the ductile iron pipe is 20~25 years after the pipe is treated by inner and outer walls. The HDPE tube has no corrosion, and the normal service life is 50 years.

Q: Can ductile iron pipes be used for irrigation of golf courses?: Certainly, ductile iron pipes are applicable for the irrigation of golf courses. Renowned for their durability, strength, and resistance to corrosion, these pipes are suitable for a wide range of uses, including irrigation systems. They possess the ability to endure high-pressure water flow and are less prone to cracking or breaking when compared to alternative materials. Moreover, ductile iron pipes boast an extended lifespan, minimizing the necessity for frequent maintenance or replacement. Consequently, they represent a dependable option for the irrigation of golf courses, where a continuous and efficient water supply is imperative for sustaining healthy turf and landscaping.

Q: What is the expected leakage rate of ductile iron pipes?: The expected leakage rate of ductile iron pipes can vary depending on various factors such as the age and condition of the pipes, the quality of installation, and the presence of any external factors that may impact the integrity of the pipes. However, in general, ductile iron pipes are known for their durability and low leakage rates compared to other types of pipes. According to industry standards and studies, the expected leakage rate of well-maintained and properly installed ductile iron pipes is typically less than 0.5 liters per pipe per day (LPPD). This leakage rate is considered acceptable and meets the requirements set by various regulatory bodies and organizations. It is important to note that regular maintenance and inspections are crucial in maintaining the low leakage rate of ductile iron pipes. By identifying and repairing any potential leaks or damages promptly, the overall leakage rate can be effectively minimized. Furthermore, advancements in manufacturing techniques and improvements in pipe design have led to the development of more leak-resistant ductile iron pipes. These pipes may have even lower expected leakage rates than the industry average, further enhancing their overall performance and reliability. Ultimately, while the expected leakage rate of ductile iron pipes can vary, it is generally considered to be low when properly installed and maintained, making them a reliable choice for various water distribution and transmission systems.

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