DUCTILE IRON PIPES AND PIPE FITTINGS C25 CLASS DN900

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t

Supply Capability:: 30000 m.t/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 use in sewage pumping stations?: Yes, ductile iron pipes are suitable for use in sewage pumping stations. Ductile iron pipes are known for their durability, strength, and excellent corrosion resistance, making them an ideal choice for wastewater applications. They can withstand the high pressures and abrasive characteristics of sewage systems without any significant degradation or loss of performance over time. Additionally, ductile iron pipes have a smooth interior surface, which helps to minimize friction losses and prevent blockages. Furthermore, ductile iron pipes have a long lifespan and require minimal maintenance, reducing overall operating costs. Therefore, due to their various advantageous properties, ductile iron pipes are highly suitable for use in sewage pumping stations.

Q:Can ductile iron pipes be used for geothermal systems?: Yes, ductile iron pipes can be used for geothermal systems. Ductile iron pipes have excellent strength and durability, making them suitable for handling the high temperatures and pressures typically encountered in geothermal systems. Their corrosion resistance and flexibility also make them a reliable choice for transporting geothermal fluid efficiently.

Q:How does ductile iron pipe handle changes in pipe diameter or size?: Ductile iron pipe is capable of handling changes in pipe diameter or size quite effectively. It has the advantage of being highly flexible and resistant to deformation, allowing it to accommodate variations in pipe dimensions without compromising its structural integrity. This flexibility is particularly beneficial in situations where there are thermal expansions or contractions, ground movement, or other external factors affecting the pipe's diameter. Overall, ductile iron pipe's ability to handle changes in size makes it a reliable and durable choice for various piping applications.

Q:Ductile iron pipes perennial bubbles in the water will rot it: 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 greater runoff; 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, ductile iron pipe perennial bubbles in the water will not be rotten.

Q:What are the different methods for repairing ductile iron pipe?: Repairing ductile iron pipes can be done using various methods, which depend on the extent and location of the damage. One popular approach involves the utilization of repair clamps or couplings. These clamps or couplings, typically constructed from stainless steel, are designed to effectively seal off and prevent further leakage from leaks or cracks in the pipe. They can be used as a temporary or permanent solution. Another option is the application of epoxy lining or patching. This method entails the use of a specialized epoxy material that forms a protective barrier on the inside of the pipe, effectively covering the damaged area. It is particularly suitable for smaller cracks or leaks and offers a durable solution. In cases where the damage is more severe, such as the presence of large cracks or fractures, it may be necessary to remove and replace the damaged section of the pipe. This process involves excavating the surrounding area, eliminating the damaged part, and installing a new section of ductile iron pipe. Alternatively, trenchless repair methods can be employed. These advanced techniques, including pipe bursting or cured-in-place pipe lining, allow for pipe repair without extensive excavation. Not only can these methods be more cost-effective, but they also cause less disruption compared to traditional repair approaches. It is important to consider the extent of the damage, the pipe's location, and the available resources and expertise when selecting a specific repair method for ductile iron pipes. Seeking guidance from a professional pipe repair service is advised to determine the most appropriate approach for a particular repair situation.

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 are ductile iron pipes restrained against axial thrust forces?: Ductile iron pipes are restrained against axial thrust forces through a combination of mechanical restraints and soil resistance. One common method of restraining axial thrust forces is by using thrust blocks. Thrust blocks are concrete structures that are built at bends, tees, and other locations where changes in direction occur in the pipeline. These blocks are designed to resist the axial forces and prevent the pipes from shifting or moving due to the pressure exerted by the flowing fluid. Additionally, mechanical restraints such as pipe restraints, thrust collars, and anchor blocks are used to provide further support and prevent axial movement. Pipe restraints are devices that are installed around the pipe and connected to adjacent structures, such as walls or concrete collars, to prevent movement. Thrust collars are also used to absorb and distribute the thrust forces generated by the flowing fluid. These collars are typically made of ductile iron or steel and are secured around the pipe to resist axial movement. Furthermore, soil resistance plays a significant role in restraining axial thrust forces. The weight of the soil surrounding the pipe creates frictional resistance, which helps counteract the axial forces. Proper trench backfilling, compaction, and adequate embedment of the pipe in the soil are essential to ensure effective soil resistance. In summary, ductile iron pipes are restrained against axial thrust forces through a combination of mechanical restraints such as thrust blocks, pipe restraints, and thrust collars, as well as soil resistance provided by proper trench backfilling and compaction. This comprehensive approach ensures that the pipes remain securely in place and can withstand the axial forces generated by the fluid flowing through them.

Q:What is the expected flow capacity of ductile iron pipes?: The expected flow capacity of ductile iron pipes can vary depending on several factors such as the diameter and wall thickness of the pipe, the type of fluid being transported, and the specific design and condition of the pipeline system. Generally, ductile iron pipes are known for their high flow capacity due to their smooth internal surface which minimizes frictional losses. They are designed to handle a wide range of fluid flows, including water, sewage, and industrial fluids. In terms of specific flow rates, it is common to refer to the Manning's equation, which is widely used to calculate the flow capacity of open channels and pipes. This equation takes into account the hydraulic radius, slope of the pipe, and Manning's roughness coefficient to determine the expected flow capacity. However, it is important to note that the actual flow capacity can also be influenced by other factors such as the presence of fittings, valves, and bends in the pipeline, as well as any potential blockages or obstructions. Therefore, it is recommended to consult the manufacturer's specifications, engineering guidelines, or work with a qualified engineer to accurately determine the expected flow capacity of ductile iron pipes for a particular application.

Q:Are ductile iron pipes suitable for industrial water systems?: Yes, ductile iron pipes are suitable for industrial water systems. Ductile iron pipes are known for their strength, durability, and corrosion resistance, making them an ideal choice for transporting water in industrial settings. They can withstand high-pressure and heavy-duty applications, making them suitable for conveying water in large-scale industrial facilities such as power plants, factories, and chemical plants. Additionally, ductile iron pipes have the ability to handle a wide range of temperatures, making them suitable for both hot and cold water systems. Their inherent flexibility allows for easy installation and maintenance, further adding to their suitability for industrial water systems. Overall, ductile iron pipes are a reliable and cost-effective solution for industrial water transportation needs.

Q:What is the process of fusion bonding for ductile iron pipes?: The process of fusion bonding for ductile iron pipes involves joining two or more pipes together using heat and pressure to create a strong and durable bond. This technique is particularly used in the construction and installation of underground water, sewer, and gas pipelines. The first step in the fusion bonding process is to clean and prepare the surfaces of the pipes to be joined. This involves removing any dirt, debris, or rust that may interfere with proper bonding. Specialized cleaning tools and techniques, such as wire brushing or sandblasting, are often employed to ensure a clean and smooth surface. Once the surfaces are prepared, the pipes are aligned and clamped together. A fusion bonding machine, also known as a fusion welder, is then used to apply heat and pressure to the joint area. The fusion bonding machine consists of heating elements that are positioned around the joint and a hydraulic system that applies the necessary pressure. The heating elements are typically electric or gas-powered and are designed to reach temperatures high enough to melt the ductile iron material. As the heat is applied, the ductile iron surfaces begin to soften and fuse together, creating a strong bond. The pressure from the fusion bonding machine ensures that the molten iron flows evenly and uniformly between the joint surfaces, promoting a seamless connection. The duration of the fusion bonding process varies depending on the size and thickness of the pipes, as well as the specific requirements of the project. Once the fusion bonding is complete, the joint is allowed to cool and solidify, forming a permanent and leak-proof connection. Fusion bonding offers several advantages for ductile iron pipes. It provides a reliable and durable joint that can withstand high pressure, temperature variations, and external loads. The seamless connection also minimizes the risk of leaks, which is crucial for underground pipelines that transport water, sewage, or gas. Overall, fusion bonding is a widely used technique for joining ductile iron pipes, ensuring their structural integrity and longevity in various infrastructure projects.

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