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:Are ductile iron pipes resistant to acid mine drainage corrosion?: Generally, ductile iron pipes are resistant to corrosion caused by acid mine drainage (AMD). Ductile iron is a highly durable material that has been widely used in various industries, including mining and water distribution, because of its excellent ability to resist corrosion. AMD is a significant environmental issue that occurs when water comes into contact with sulfide minerals in mining areas, resulting in the formation of sulfuric acid. This acid can cause damage to various materials, including pipes, and can contaminate water sources. Ductile iron pipes have a protective layer made of cement mortar or epoxy coating, which acts as a barrier between the corrosive AMD and the pipe material. This protective layer prevents direct contact and reduces the likelihood of corrosion. Moreover, ductile iron pipes have a strong resistance to both internal and external corrosion, making them suitable for environments where AMD may be present. They have a proven track record of reliability and longevity, even in harsh conditions, ensuring the integrity of the water distribution system and minimizing the risk of leaks or failures. However, it's important to note that the resistance of ductile iron pipes to AMD corrosion can depend on other factors, such as the specific composition and concentration of the AMD, the duration of exposure, and the temperature. Therefore, it is recommended to seek advice from experts and conduct thorough material testing and analysis to determine the suitability of ductile iron pipes in specific AMD environments.

Q:What is the expected hoop stress capacity of ductile iron pipes?: The capacity for hoop stress expected in ductile iron pipes can vary depending on various factors, including the diameter, wall thickness, and material grade of the pipes. However, as a general rule, ductile iron pipes possess a high level of strength and durability, enabling them to withstand significant levels of hoop stress. Ductile iron pipes are specifically designed and manufactured to meet certain standards and requirements, such as those put forth by the American Water Works Association (AWWA) C151 and C115 standards. These standards ensure that the pipes possess the necessary strength to handle the expected loads and pressures that they will encounter throughout their lifespan. The capacity for hoop stress in ductile iron pipes primarily relies on their tensile strength. Ductile iron is a form of cast iron that has been treated to exhibit ductility, meaning it can withstand tensile stress without fracturing. This characteristic makes it suitable for applications where the pipes may encounter internal or external pressure, such as water distribution systems or sewer lines. Engineers typically perform calculations to determine the anticipated hoop stress capacity of ductile iron pipes. These calculations take into account specific pipe dimensions, material properties, and expected operating conditions. Factors such as internal pressure, external loads, and safety factors required by design standards are considered in these calculations. It is important to verify the expected hoop stress capacity of ductile iron pipes using the manufacturer's specifications and engineering calculations. Furthermore, any modifications or repairs to the pipes should be carried out by qualified professionals following industry guidelines to ensure their ongoing strength and performance.

Q:Can ductile iron pipe be used for wastewater treatment plant sludge dewatering?: Ductile iron pipe is suitable for the dewatering of sludge in wastewater treatment plants. Its durability, strength, and resistance to corrosion make it a popular choice in these facilities. The pipes can withstand the harsh conditions and abrasive characteristics of the sludge dewatering process. Moreover, their leak-proof joints are essential in preventing any sludge leakage during dewatering. Furthermore, ductile iron pipes come in different sizes and are easy to install, making them a convenient option for wastewater treatment plant sludge dewatering.

Q:How much water seepage is allowed in the water pressure test for water hose DN300?: For water polo hose DN300, hydraulic pressure test allows water penetration to be 17.60 m3 / (24h km).The water pressure test of the indoor water supply pipeline must meet the design requirements. When the design is not specified, the test pressure of all kinds of material supply piping system is 1.5 times of the work pressure, but not less than 0.6MPa.

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:How is ductile iron pipe different from cast iron pipe?: Ductile iron pipe and cast iron pipe are commonly used in plumbing and drainage applications, but they have differences in composition, strength, and flexibility. To begin with, ductile iron pipe is made from a different iron alloy than cast iron pipe. Ductile iron contains more carbon and silicon, which gives it increased strength and durability. On the other hand, cast iron pipe is made from gray iron, which has higher carbon content but lacks the flexibility of ductile iron. Moreover, ductile iron pipe is renowned for its superior strength and resistance to impact. It can withstand higher pressures and is less likely to crack or break under heavy loads or external forces. Cast iron pipe, although strong, is more brittle and prone to fractures and failures. Another significant distinction is the flexibility of ductile iron pipe. It possesses greater flexibility and can endure bending and deformation without fracturing. This flexibility facilitates easier installation, particularly in areas with uneven terrain or where ground movement may occur. In contrast, cast iron pipe is less flexible and more rigid, making it unsuitable for applications that require flexibility. Additionally, ductile iron pipe has a smoother interior surface compared to cast iron pipe. This smoothness reduces friction, enhances flow efficiency, and minimizes the accumulation of sediment and deposits within the pipe, resulting in improved water flow and reduced maintenance needs. In conclusion, ductile iron pipe sets itself apart from cast iron pipe due to its composition, strength, flexibility, and smooth interior surface. Ductile iron offers superior strength, impact resistance, and flexibility, making it the preferred choice in various plumbing and drainage applications.

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.

Q:Is the crankshaft material forged or ductile iron?: Cast iron can not be forged, only steel, malleable iron can not be forged, only the crankshaft is particularly hot, can not meet the strength of the hardening when forging

Q:What is the expected pressure rating of ductile iron pipes?: The pressure rating of ductile iron pipes can vary depending on factors like pipe diameter, wall thickness, and installation joint type. However, ductile iron pipes are generally recognized for their durability and ability to handle high pressure. In most instances, ductile iron pipes are designed and produced to meet or surpass industry standards like AWWA C151 or C115/A21.15. These standards establish the minimum pressure rating for ductile iron pipes, which typically range from 150 to 350 psi for water transmission purposes. It's important to note that the pressure rating is also influenced by the pipe's class, which corresponds to the wall thickness. Ductile iron pipes are commonly available in different classes such as Class 50, Class 51, Class 52, etc. Each class has its own pressure rating, with higher classes offering greater strength and pressure resistance. To determine the exact pressure rating, it is advisable to refer to the manufacturer's specifications and guidelines for the specific ductile iron pipes being used. Additionally, other factors like pipe support, installation methods, and operating conditions should be considered to ensure the safe and efficient functioning of the ductile iron pipe system.

Q:Can ductile iron pipes be used for irrigation of sports fields?: Yes, ductile iron pipes can be used for irrigation of sports fields. Ductile iron pipes are known for their strength, durability, and flexibility, making them an ideal choice for various applications, including irrigation. These pipes have high resistance to external pressures and impact, which is beneficial for sports fields that may experience heavy foot traffic and potential damage. Additionally, ductile iron pipes have excellent corrosion resistance, ensuring long-term performance and minimal maintenance. Their smooth interior surface also allows for efficient water flow, preventing clogs and ensuring adequate irrigation for the sports fields. Overall, ductile iron pipes are a reliable and suitable option for irrigation systems in sports fields.

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