DUCTILE IRON PIPE C Class DN1200
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Ductile Iron Cast Pipe is without any defects compare with tradition casting tech, which has many advantages particularly as follow:
(1) High density. In the "vertical upward casting" process, the melt iron of centre liquid column in center crystallizer is continuously feeding for volume shrinkage caused by condensation tube at outer circumference , which lead to be free of shrinkage porosity.
(2) High purity. When melt iron pouring, the mixed impurities such as gas, dross, sand grain which are lighter than melt iron could be eliminated at furnace mouth, its impossible to enter into the crystallizer through the channel, so the melt iron into the crystallizer is very pure.
(3) Strength with toughness. The cooling speed provided by continuous crystallizer is 30 times than sand casting and 5 times than centrifugal casting, and doesn't produce white iron, the eutectic cell volume of continuous cast iron is one eighth to one tenth compare with traditional cast iron. The density of graphite nodule in ductile iron can reach 300-700 pcs/mm2. Therefore, all reason above improve the strength and toughness of continuous cast iron.
(4) Free machining. The high speed cooling make the hardening phase (such as boride, steadite) not appear like reticular, massive or thick, but diffuse like fish bone and pane in shape, moreover, there are tiny graphite flakes inlaid hardening phase. It's free machining in BrinellHardness the range of 250-300HB. However, the Brinell Hardness of 250 is top limit to common metal materials.
(5) Uniform composition of tube wall. The convection mixing of liquid column caused by marching type drawing in crystallizer make the composition of tube wall well-distributed, and concentration gradient very little.
(6) High productivity. To the wall thickness of tube under 10mm, the speed of continuous casting is 1 meter/min, to the wall thickness of tube under 20mm, the speed of continuous casting is 0.5 meter/min, which is high efficiency that centrifugal or other casting tech couldn't reach.
- Q: What are the different types of ductile iron pipe joints?
- There are several different types of ductile iron pipe joints commonly used in various applications. These joints are designed to provide a strong and reliable connection between pipes, ensuring efficient fluid transfer and preventing leaks. Some of the most common types of ductile iron pipe joints include: 1. Push-on Joint: This type of joint is easy to install, as it does not require any special tools or equipment. The spigot end of one pipe is inserted into the bell end of another pipe, creating a tight seal. A rubber gasket is usually used to enhance the joint's resistance to leaks. 2. Mechanical Joint: Mechanical joints are commonly used in water and wastewater applications. They consist of a gland, a rubber gasket, and a follower gland. The pipe ends are pushed into the gland, and the follower gland is tightened, compressing the rubber gasket and creating a secure connection. 3. Restrained Joint: Restrained joints are specifically designed to withstand high internal and external forces such as water pressure or soil loadings. These joints typically use a rubber gasket and a restraining mechanism, such as a bolt or wedge, to prevent the pipe from moving or separating under stress. 4. Flanged Joint: Flanged joints are commonly used in large diameter pipes or applications requiring frequent disassembly. Each pipe end is equipped with a flange, which is then bolted together with the use of gaskets to create a strong connection. Flanged joints provide easy access for maintenance or repairs. 5. Welded Joint: Welded joints involve heating the pipe ends and fusing them together to form a permanent connection. This type of joint is commonly used in high-pressure applications where a reliable and leak-free connection is crucial. Welded joints require skilled labor and specialized equipment. It is important to choose the appropriate type of joint based on the specific application, pipe size, and operating conditions to ensure the integrity and longevity of the ductile iron pipe system. Consulting with a professional engineer or pipe manufacturer can help determine the most suitable joint for a particular project.
- Q: Can ductile iron pipe be used for bridge crossings?
- Yes, ductile iron pipe can be used for bridge crossings.
- Q: What are the typical installation methods for ductile iron pipe?
- The typical installation methods for ductile iron pipe involve several steps to ensure proper installation and functionality. Firstly, the trench is excavated to the required depth and width, accounting for the pipe diameter and bedding material. The bottom of the trench is then carefully prepared by removing any sharp objects or debris that could potentially damage the pipe. Next, a layer of suitable bedding material such as sand or fine gravel is placed evenly along the bottom of the trench to provide support and prevent any point loading on the pipe. The bedding material is compacted to ensure stability and eliminate any voids that could cause the pipe to settle or shift over time. After the bedding is in place, the ductile iron pipe is carefully lowered into the trench, taking precautions to prevent any damage to the pipe's protective coating. The pipes are then aligned and supported at regular intervals using appropriate pipe supports or blocks. Once the pipe is properly aligned, the joints are assembled by applying a lubricant 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. After the joints are 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 provide stability and prevent any voids. The backfilling process is carried out gradually, allowing for proper compaction and avoiding excessive pressure or damage to the pipe. Finally, the trench is fully backfilled and compacted, ensuring that the pipe is adequately supported and protected from external forces. Surface restoration is then performed to restore the area to its original condition, minimizing any disruption caused by the installation process. It is important to note that these installation methods may vary depending on project specifications, local regulations, and engineering recommendations. Therefore, it is essential to consult the manufacturer's guidelines and work closely with qualified professionals to ensure proper installation of ductile iron pipe.
- Q: Can ductile iron pipe be used for wastewater treatment plant applications?
- Yes, ductile iron pipe can be used for wastewater treatment plant applications. Ductile iron pipes have several properties that make them suitable for such applications. Firstly, ductile iron is highly resistant to corrosion, which is crucial in wastewater treatment plants where the presence of chemicals and water can lead to rust and degradation of pipes. Additionally, ductile iron pipes have high tensile strength and durability, making them able to withstand the demands of wastewater treatment processes. Furthermore, ductile iron pipes are also known for their flexibility, which allows for easy installation and maintenance in complex wastewater treatment systems. Overall, ductile iron pipe is a reliable and cost-effective choice for wastewater treatment plant applications.
- Q: What are the recommended bedding and backfill materials for ductile iron pipe?
- To ensure proper alignment and prevent damage during installation and operation, ductile iron pipe requires a combination of granular materials such as sand, gravel, or crushed stone for bedding and backfill. Bedding involves using sand to create a level surface, distributing the load evenly and reducing stress concentration. As for backfill, it should be carefully selected to offer good compaction and drainage properties, preventing settling and potential damage. Common choices for backfill are crushed stone or gravel, which provide stability and allow for proper compaction. To ensure the long-term performance and durability of the pipe system, it is crucial to adhere to the recommendations of the pipe manufacturer and relevant industry standards when selecting bedding and backfill materials. These materials must meet specified size and quality requirements. Additionally, local regulations and soil conditions should also be considered when determining the appropriate bedding and backfill materials for ductile iron pipe installations.
- Q: What is the typical cost of maintenance for ductile iron pipes?
- The typical cost of maintenance for ductile iron pipes can vary depending on several factors. These factors include the age and condition of the pipes, the location and accessibility of the pipes, and the specific maintenance requirements. In general, regular maintenance activities for ductile iron pipes may include cleaning and flushing to remove sediment and debris, inspecting for leaks or cracks, repairing or replacing damaged sections, and applying protective coatings to prevent corrosion. These maintenance tasks are essential to ensure the longevity and performance of the pipes. The cost of maintenance for ductile iron pipes can range from a few hundred dollars to several thousand dollars per year, depending on the extent of maintenance required. Routine maintenance activities such as cleaning and inspection may have lower associated costs, while more significant repairs or replacements can be more expensive. Additionally, the cost of maintenance can be influenced by external factors such as labor costs, materials, and contractor fees. It is crucial to consider these factors and consult with professionals or utility companies for accurate cost estimates specific to your location and situation. Overall, while the cost of maintenance for ductile iron pipes can vary, investing in regular maintenance is essential to extend the lifespan and functionality of the pipes, minimize disruptions, and prevent costly repairs or replacements in the long run.
- Q: Are ductile iron pipes suitable for acidic or alkaline environments?
- Ductile iron pipes are generally suitable for both acidic and alkaline environments, although their performance may vary depending on the specific conditions. Ductile iron is a type of cast iron that has been treated with a small amount of magnesium to enhance its strength and flexibility. This treatment allows ductile iron pipes to withstand a wide range of conditions, including those found in acidic or alkaline environments. In acidic environments, ductile iron pipes provide good resistance to corrosion. The iron in the pipes reacts with the acid to form a protective layer of iron oxide, which helps prevent further corrosion. However, it is important to note that the performance of ductile iron pipes in acidic environments can be influenced by factors such as the concentration of the acid and the temperature. In highly concentrated or extremely acidic conditions, alternative materials like stainless steel or corrosion-resistant alloys may be more suitable. Similarly, in alkaline environments, ductile iron pipes exhibit good resistance to corrosion. The alkaline conditions in these environments typically help to passivate the surface of the iron, forming a protective layer that prevents further corrosion. However, as in acidic environments, the specific conditions and concentrations of alkalis may impact the performance of ductile iron pipes. In cases of very high alkalinity or extreme temperatures, other materials like plastic or concrete pipes may be more appropriate. It is worth noting that although ductile iron pipes are generally suitable for both acidic and alkaline environments, regular maintenance and monitoring are crucial to ensure their long-term performance. Proper attention should be given to monitoring the pH levels and other chemical characteristics of the environment to identify any potential issues or required maintenance. Consulting with experts or engineers in the field can provide valuable insights and guidance in selecting the most appropriate materials for specific acidic or alkaline environments.
- Q: How do ductile iron pipes perform in earthquake-induced ground movements?
- Ductile iron pipes have proven to be a reliable and resilient choice for underground infrastructure, including in areas prone to earthquake-induced ground movements. The unique properties of ductile iron, such as its strength and flexibility, allow it to withstand the effects of ground movements during an earthquake. During an earthquake, the ground experiences shaking and shifting, which can exert significant forces on underground pipes. Ductile iron pipes have the ability to flex under these forces, absorbing the energy and reducing the risk of failure. They can withstand substantial ground movements without cracking or breaking, which ensures the continued flow of water or other fluids. In addition, ductile iron pipes have excellent resistance to corrosion and are highly durable, making them suitable for long-term use in earthquake-prone areas. This reduces the need for frequent maintenance or replacement, providing cost-effective and reliable infrastructure solutions. Furthermore, the joints used in ductile iron pipe installations are designed to accommodate movement and allow for slight adjustments during ground shifts. This flexibility prevents the pipes from becoming dislodged or separated, maintaining the integrity of the system. Overall, ductile iron pipes have a proven track record of performance in earthquake-induced ground movements. They offer resilience, flexibility, and durability, ensuring the continuous functioning of water and sewer systems even in areas prone to seismic activity.
- Q: What are the advantages of using ductile iron pipe over HDPE pipe?
- Ductile iron pipe offers several advantages over HDPE pipe. Firstly, it has a higher strength and durability, making it suitable for high-pressure and heavy-duty applications. Secondly, it has better resistance to external loads, such as traffic or soil pressure. Additionally, ductile iron pipe has superior fire resistance and is less susceptible to damage from UV rays. Moreover, it has a longer lifespan and requires less maintenance compared to HDPE pipe. Lastly, ductile iron pipe has better flow characteristics, resulting in lower energy consumption for pumping systems.
- Q: Can ductile iron pipes be used for underground river crossings?
- Yes, ductile iron pipes can be used for underground river crossings. Ductile iron pipes are known for their strength and durability, making them suitable for various applications including underground river crossings. These pipes have a high tensile strength and can withstand the external loads and pressures exerted by the surrounding soil and water. Additionally, they have excellent corrosion resistance, which is crucial when dealing with underground water sources like rivers. Ductile iron pipes are also capable of withstanding ground movements, settling, and other geological challenges that may occur during the installation and operation of underground river crossings. Therefore, they are a reliable choice for ensuring the safe and efficient transportation of water across rivers while maintaining the integrity of the underground infrastructure.
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DUCTILE IRON PIPE C Class DN1200
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
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OKorder Financial Service
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