DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN250

DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN250

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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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· 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: Can ductile iron pipe be used for water treatment plant sludge handling?: Yes, ductile iron pipe can be used for water treatment plant sludge handling. Ductile iron pipes are known for their durability, strength, and resistance to corrosion, making them suitable for handling various types of wastewater and sludge. They can efficiently transport sludge from different stages of the water treatment process within the plant without any adverse effects.

Q: What are the different methods for tapping ductile iron pipe?: There are several different methods for tapping ductile iron pipe, depending on the specific requirements of the project. Some of the common methods used include: 1. Mechanical Tapping: This method involves using a mechanical tapping machine to create a hole in the ductile iron pipe. The machine is equipped with a cutting tool that rotates and cuts through the pipe wall, creating a clean hole. This method is commonly used for smaller diameter pipes and is relatively quick and efficient. 2. Hot Tapping: Hot tapping involves creating a hole in a pressurized ductile iron pipe while it is still in service. This method requires specialized equipment and expertise to ensure safety and maintain the integrity of the pipe. Hot tapping is commonly used when it is not feasible or practical to shut down the pipeline for maintenance or repair work. 3. Electrofusion Tapping: Electrofusion tapping is a method that uses an electrofusion saddle and fitting to create a branch connection on a ductile iron pipe. This method involves welding a fitting onto the pipe using an electrofusion machine, which creates a secure and leak-proof connection. Electrofusion tapping is commonly used for larger diameter pipes and is suitable for both water and gas applications. 4. Saddle Tapping: Saddle tapping involves attaching a saddle or clamp onto the ductile iron pipe and drilling a hole through the saddle into the pipe. The saddle is then equipped with a threaded outlet for connecting a branch line. This method is commonly used for smaller diameter pipes and is relatively simple and cost-effective. 5. Split Sleeve Tapping: Split sleeve tapping is a method that involves cutting a section out of the ductile iron pipe and installing a split sleeve over the cut. The split sleeve is then bolted together, creating a secure and watertight connection. This method is commonly used for larger diameter pipes and is suitable for both water and gas applications. It is important to note that the selection of the tapping method should be based on factors such as the pipe size, pressure rating, required branch connection, and the specific requirements of the project. Consulting with a professional engineer or tapping specialist is recommended to ensure the proper method is used for tapping ductile iron pipe.

Q: How much is the installation of cast iron pipe drainage 1 meters?: From the tightness and corrosion resistance, ductile pipe sealing better after installation, but also can improve the corrosion resistance of corrosion protection through a variety of means; from the hydraulic performance, because ductile pipe specifications generally refers to the inner diameter of PE pipe diameter specifications generally refers to the same specifications, because under the condition of ductile pipe can achieve more runoff large; from the installation and maintenance cost, ductile pipe have more favorable price. The inner wall of zinc spray, anti-corrosion materials such as cement mortar.

Q: How is ductile iron different from cast iron?: Ductile iron and cast iron are two types of iron alloys that differ in terms of their composition, properties, and applications. The main difference between ductile iron and cast iron lies in their microstructure and mechanical properties. Ductile iron, also known as nodular cast iron or spheroidal graphite iron, is a type of cast iron that undergoes an additional treatment process to enhance its strength and ductility. This is achieved by adding small amounts of magnesium to the molten iron during the casting process, which results in the formation of graphite nodules throughout the material. These graphite nodules act as stress raisers and prevent the propagation of cracks, making ductile iron more resistant to fractures and providing it with improved ductility compared to cast iron. In contrast, cast iron is a type of iron alloy that contains a higher carbon content than ductile iron. This higher carbon content leads to the formation of graphite flakes within the material, giving cast iron its characteristic brittle nature. Due to its brittleness, cast iron is more prone to cracking and less flexible than ductile iron. However, cast iron has excellent compressive strength and is highly resistant to wear and abrasion, making it suitable for applications where strength and durability are important, such as in engine blocks, pipes, and manhole covers. Another difference between ductile iron and cast iron is their machinability. Ductile iron is generally easier to machine due to its lower carbon content and the presence of graphite nodules, which act as lubricants during the cutting process. On the other hand, the presence of graphite flakes in cast iron can cause tool wear and result in poor surface finish during machining. In summary, ductile iron and cast iron differ in their microstructure, mechanical properties, and applications. Ductile iron offers improved ductility and resistance to fractures, making it suitable for applications requiring flexibility and impact resistance. Cast iron, with its higher carbon content and graphite flakes, provides excellent compressive strength and wear resistance, making it ideal for applications requiring strength and durability.

Q: Are ductile iron pipes resistant to chemicals or solvents?: Ductile iron pipes possess a general resistance to a wide variety of chemicals and solvents. This resistance can be attributed to their composition, which consists of a high percentage of iron and carbon, as well as small amounts of other alloying elements like silicon, manganese, and magnesium. These alloying elements contribute to the overall strength and durability of the pipes, thereby making them highly resistant to corrosion and chemical attacks. However, it is important to acknowledge that the resistance of ductile iron pipes to chemicals and solvents may vary depending on the specific substance and its concentration. Certain aggressive chemicals or solvents, especially those with high levels of acidity or alkalinity, may gradually corrode or degrade the material of the pipes over time. In such instances, it is advisable to consult the pipe manufacturer or a professional engineer to ensure the compatibility of the pipes with the specific chemicals or solvents being used. Furthermore, the proper installation and maintenance practices are critical factors in preserving the chemical resistance of ductile iron pipes. Regular inspections, cleanings, and the application of protective coatings can assist in extending the lifespan and performance of the pipes when exposed to various chemicals or solvents.

Q: How are ductile iron pipes protected against root intrusion?: Ductile iron pipes are protected against root intrusion through the use of protective coatings and barriers. One common method is to apply an external coating, such as a bituminous or epoxy layer, which acts as a deterrent for root penetration. Additionally, root barriers made of high-density polyethylene or other materials can be installed around the pipes to further prevent root intrusion. These measures help to maintain the structural integrity of the pipes and prevent any potential damage caused by root growth.

Q: How does ductile iron pipe perform in sandy or unstable soils?: Ductile iron pipe performs exceptionally well in sandy or unstable soils due to its inherent strength and flexibility. The composition of ductile iron, which includes a combination of iron, carbon, and small amounts of other elements, gives it superior mechanical properties compared to other types of pipes. In sandy soils, where there is a risk of pipe movement and deformation due to shifting ground, ductile iron's high tensile strength and elongation characteristics allow it to withstand the pressure and stress without fracturing or breaking. Its flexibility enables it to accommodate the movement and settlement of the surrounding soil, reducing the risk of pipe failure. Moreover, ductile iron pipe's resistance to corrosion makes it highly suitable for installation in sandy soils. The protective lining and coatings applied to the interior and exterior of the pipe prevent the soil's corrosive elements from attacking the iron, ensuring long-term durability and reliability. In unstable soils with varying compaction levels or weak load-bearing capacity, ductile iron pipe's sturdy construction provides stability and support. Its robustness allows it to distribute the loads evenly, minimizing the risk of pipe deflection or collapse. Additionally, ductile iron pipe's joint design and sealing methods, such as push-on joints or mechanical joints with rubber gaskets, offer excellent leak resistance and prevent soil infiltration, further enhancing its performance in sandy or unstable soils. Overall, ductile iron pipe's combination of strength, flexibility, corrosion resistance, and reliable joint systems make it an ideal choice for applications in sandy or unstable soils, providing a long-lasting and efficient solution for water and wastewater transmission.

Q: How do ductile iron pipes perform in high-temperature steam applications?: Ductile iron pipes excel in high-temperature steam applications thanks to their remarkable performance. They can withstand elevated temperatures and maintain their structural integrity, making them highly suitable for steam distribution systems. One notable advantage of ductile iron pipes in high-temperature steam applications lies in their exceptional thermal conductivity. This property enables efficient heat transfer, ensuring that the steam is delivered at the desired temperature with minimal loss. Additionally, the high thermal conductivity of ductile iron helps to mitigate the risk of thermal expansion and contraction, which can lead to pipe failure or leakage. Moreover, ductile iron pipes boast a high melting point, typically around 2000°F (1093°C). This resistance to extreme temperatures encountered in steam applications ensures that the pipes remain intact and do not deform, guaranteeing the reliability and longevity of the piping system. Another crucial factor contributing to the performance of ductile iron pipes in high-temperature steam applications is their corrosion resistance. These pipes are usually coated with epoxy or other protective materials to prevent corrosion and maintain their structural integrity, even in aggressive steam environments. This corrosion resistance ensures that the pipes can endure harsh conditions and operate efficiently over an extended period. In conclusion, ductile iron pipes are an ideal choice for high-temperature steam applications due to their excellent thermal conductivity, high melting point, and corrosion resistance. These properties make them a reliable and long-lasting option for steam distribution systems, ensuring the safe and efficient transportation of steam at elevated temperatures.

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: Are ductile iron pipes compatible with other pipe materials?: Generally, other pipe materials can be compatible with ductile iron pipes. The high level of flexibility and strength of ductile iron pipes allows for their connection with various materials like PVC, HDPE, and steel. Transition fittings are often utilized to securely and prevent leaks when connecting ductile iron pipes with other materials. To maintain the integrity of the pipeline system and ensure compatibility, it is crucial to follow industry standards and guidelines when joining different pipe materials.

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