DUCTILE IRON PIPES AND PIPE FITTINGS k9 CLASS DN80

DUCTILE IRON PIPES AND PIPE FITTINGS k9 CLASS DN80

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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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Duct Iron Pipe DI Pipe ISO 2531 DN 80-300mm

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 pipes be used in areas with high levels of organic matter in soil?: Yes, ductile iron pipes can be used in areas with high levels of organic matter in soil. Ductile iron pipes have excellent corrosion resistance, making them suitable for various soil conditions, including those with high levels of organic matter. They are resistant to chemical attacks and offer long-term durability, making them a reliable choice for such environments.

Q: How are ductile iron pipes tested for quality?: Ductile iron pipes are tested for quality using various methods to ensure they meet the required standards and specifications. One common test is the hydrostatic pressure test, which involves subjecting the pipes to water or other liquid under high pressure to check for any leaks or weaknesses. The pipes are typically filled with water and the pressure is gradually increased to a predetermined level. This test helps to identify any potential defects in the pipes that could compromise their integrity. Another important quality test for ductile iron pipes is the tensile test. This test involves pulling a sample of the pipe until it breaks, measuring the amount of force applied and the elongation of the sample. By doing so, the tensile strength and ductility of the pipe can be determined, ensuring it can withstand the required loads and stresses without deformation or failure. In addition to these tests, other quality checks include visual inspection, dimensional checks, and surface defect examinations. Visual inspection involves scrutinizing the pipes for any visible defects such as cracks, voids, or surface irregularities. Dimensional checks ensure that the pipes meet the specified dimensions and tolerances. Furthermore, ductile iron pipes are often subjected to corrosion resistance tests. This is done by exposing the pipes to different corrosive environments, such as saltwater or acidic solutions, to evaluate their resistance to corrosion. This is crucial as it determines the durability and longevity of the pipes, especially in applications where they may be exposed to harsh conditions. Overall, ductile iron pipes undergo rigorous testing to ensure their quality and performance. These tests help guarantee that the pipes meet the required standards, are safe to use, and are capable of withstanding the expected loads and environmental conditions they will encounter in their intended applications.

Q: How do ductile iron pipes handle soil movement?: Ductile iron pipes are known for their excellent strength and durability, making them highly capable of handling soil movement. These pipes are designed to resist external loads and pressures caused by soil settlement, ground shifting, or other environmental factors. One of the key features of ductile iron pipes is their flexibility. Unlike rigid materials such as cast iron or concrete pipes, ductile iron pipes have a certain level of elasticity that allows them to withstand soil movement without cracking or breaking. This flexibility enables the pipes to absorb the stresses induced by the soil, preventing any significant damage to the pipeline system. Furthermore, ductile iron pipes possess high tensile strength, which means they can resist pulling forces resulting from soil movement. The pipes can withstand the expansion and contraction of the surrounding soil, reducing the risk of pipe deformation or failure. Moreover, ductile iron pipes are often installed with proper bedding and backfilling techniques to further enhance their ability to handle soil movement. Adequate bedding materials, such as crushed stone or sand, are used to provide stable support to the pipes and distribute the external loads evenly. This helps to minimize the impact of soil movement on the pipes and maintain their structural integrity. In summary, ductile iron pipes are designed to effectively handle soil movement due to their flexibility, high tensile strength, and proper installation methods. These pipes can withstand the stresses induced by soil settlement, ground shifting, or other soil-related factors, ensuring reliable and long-lasting performance in various environmental conditions.

Q: What are the different lining thickness options for ductile iron pipe?: The different lining thickness options for ductile iron pipe typically depend on the specific application and the requirements of the project. The most common lining options for ductile iron pipe include cement mortar lining, polyurethane lining, and polyethylene lining. Cement mortar lining is one of the oldest and most widely used lining options for ductile iron pipes. It involves applying a layer of cement mortar to the inner surface of the pipe, which provides protection against corrosion and enhances the hydraulic performance of the pipe. The thickness of cement mortar lining can vary, typically ranging from 3mm to 6mm. Polyurethane lining is another popular choice for ductile iron pipes, especially in applications where resistance to abrasion and chemical attack is required. Polyurethane linings are typically applied using a spray or casting method, and the thickness can vary depending on the specific requirements of the project. Generally, polyurethane linings can range from 1mm to 4mm in thickness. Polyethylene lining is a relatively newer technology for ductile iron pipes and is commonly used in applications where resistance to chemical corrosion is necessary. Polyethylene linings are typically applied using a rotational lining process, where a layer of molten polyethylene is evenly distributed on the internal surface of the pipe. The thickness of polyethylene lining can vary from 2mm to 8mm, depending on the specific project requirements. It is important to note that the lining thickness can be customized based on the specific requirements of the project, such as the corrosiveness of the transported fluid, the operating conditions, and the desired service life of the pipe. Consulting with a qualified engineer or pipe manufacturer is recommended to determine the most suitable lining thickness for a particular application.

Q: What are the common methods for flow control in ductile iron pipes?: There are several common methods for flow control in ductile iron pipes. One of the most commonly used methods is the installation of valves. Valves can be used to regulate the flow of water or other fluids through the pipes. They can be manually operated or automated, depending on the specific needs of the system. Another method for flow control in ductile iron pipes is the use of flow restrictors or flow limiters. These devices are installed in the pipes to reduce the flow rate and ensure that the system operates within its designed parameters. Flow restrictors can be useful in situations where the flow needs to be controlled to prevent damage or to optimize the efficiency of the system. Flow control can also be achieved through the use of pressure regulators. These devices are installed in the pipes to maintain a specific pressure level within the system. Pressure regulators can help prevent excessive pressure, which can lead to pipe bursts or other damage. They can also help maintain a consistent pressure throughout the system, ensuring that the flow is controlled and predictable. Additionally, flow control can be achieved through the use of flow meters. These devices are installed in the pipes to measure the flow rate of the fluid passing through them. By monitoring the flow rate, operators can adjust valves or other flow control devices to ensure that the flow is within the desired range. Flow meters are particularly useful in applications where accurate flow measurement is crucial, such as in industrial processes or water distribution systems. Overall, the common methods for flow control in ductile iron pipes include the use of valves, flow restrictors, pressure regulators, and flow meters. These methods can be combined or used individually depending on the specific requirements of the system.

Q: What is the ductile cast iron pipe: Cast iron pipe is called a coiled pipe, one is the mouth, and the other is the flange. It is often used in the joint of the cast iron pipe valve, and is often used in conjunction with the second pipe (plug pipe coil)

Q: Can ductile iron pipes be used for underground geothermal systems?: Yes, ductile iron pipes can be used for underground geothermal systems. Ductile iron is known for its strength and durability, making it a suitable choice for underground applications. Additionally, it has good corrosion resistance, which is essential in geothermal environments where water and soil conditions can be aggressive.

Q: What is the difference between ductile iron and cast iron pipes?: Ductile iron and cast iron pipes are both popular materials used in plumbing systems, but they have distinct differences in terms of composition, strength, and flexibility. 1. Composition: Ductile iron pipes are made from ductile iron, which is a type of cast iron that has been treated with trace amounts of magnesium to enhance its flexibility and strength. On the other hand, cast iron pipes are made from regular cast iron, which is more brittle and less malleable. 2. Strength: Ductile iron pipes are significantly stronger than cast iron pipes. Ductile iron has a higher tensile strength, meaning it can withstand higher levels of internal and external pressure. This makes it more suitable for applications where high strength is required, such as water mains or sewer lines. Cast iron pipes, on the other hand, are more prone to cracking or breaking under pressure. 3. Flexibility: Ductile iron pipes have greater flexibility compared to cast iron pipes. This flexibility allows them to withstand ground movement, making them less susceptible to damage or breakage caused by settling or shifting soil. Cast iron pipes, due to their inherent brittleness, are more likely to crack or separate when exposed to ground movement or vibrations. 4. Installation: Ductile iron pipes are typically joined using a mechanical joint or flanged joint, which provides a secure and leak-proof connection. On the other hand, cast iron pipes are usually joined using a bell-and-spigot joint, which relies on gaskets or lead caulking to create a seal. The mechanical joint used in ductile iron pipes offers better resistance to movement and external forces. 5. Cost: Ductile iron pipes are generally more expensive than cast iron pipes. The additional treatment process and higher strength of ductile iron contribute to the increased cost. However, the added durability and longer lifespan of ductile iron pipes can offset the initial investment, as they may require fewer repairs or replacements over time. In summary, the main differences between ductile iron and cast iron pipes lie in their composition, strength, flexibility, installation methods, and cost. Ductile iron pipes offer superior strength and flexibility, making them more suitable for demanding applications, while cast iron pipes are more brittle and prone to breakage. Ultimately, the choice between the two depends on the specific requirements of the plumbing system and the available budget.

Q: What is the cost of ductile iron pipe compared to other pipe materials?: The cost of ductile iron pipe compared to other pipe materials can vary depending on various factors such as the size, length, and specific requirements of the project. However, generally speaking, ductile iron pipe tends to be more expensive than some of the alternative pipe materials such as PVC or HDPE (high-density polyethylene) pipes. Ductile iron pipe is known for its exceptional strength and durability, making it suitable for a wide range of applications including water distribution, wastewater systems, and industrial piping. Its robustness and longevity contribute to its higher cost compared to other pipe materials. On the other hand, PVC and HDPE pipes are often more affordable options due to their lower production and material costs. Additionally, these materials are lightweight, easy to install, and resistant to corrosion, which can lead to cost savings during installation and maintenance. It is important to note that while ductile iron pipe may have a higher upfront cost, its superior strength and longevity can result in long-term cost savings by minimizing the need for frequent repairs or replacements. The choice of pipe material should be made considering the specific project requirements, budget constraints, and the anticipated lifespan of the infrastructure.

Q: What is the expected external protection system for ductile iron pipes?: The expected external protection system for ductile iron pipes typically includes a combination of coatings and cathodic protection. Coatings, such as fusion-bonded epoxy (FBE) or polyethylene, are applied to the external surface of the pipe to provide a barrier against corrosion and protect it from the surrounding environment. These coatings are highly resistant to moisture, chemicals, and abrasion, ensuring the longevity of the pipe. In addition to coatings, cathodic protection is often employed to further enhance the external protection of ductile iron pipes. Cathodic protection involves the use of sacrificial anodes or impressed current systems to create a protective electrical current that counteracts the corrosive effects on the pipe's surface. This technique helps prevent corrosion by ensuring that the ductile iron remains in a cathodic state, where it is less prone to degradation. The combination of coatings and cathodic protection provides a robust and comprehensive external protection system for ductile iron pipes. These measures effectively safeguard the pipes from corrosion, extending their service life and minimizing the need for costly repairs or replacements. Regular inspection and maintenance are also essential to ensure the ongoing effectiveness of the external protection system and to address any potential issues promptly.

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