Ductile Iron Pipe Standard:ISO2531 Length: 6M/NEGOTIATED

Ductile Iron Pipe Standard:ISO2531 Length: 6M/NEGOTIATED

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 500 m

Supply Capability:: 100000 m/month

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1.Ductile Iron Pipe Description :

DI pipe fittings are manufactured according to ISO 2531 or BS EN545 or BS4772 FOR POTABLE WATER ,internal is cement lining or wet epoxy coating;External is zinc plus bitumen or wet epoxy coating. We also manufacture ductile iron fittings with fusion bonded epoxy both inside and outside. All the producets are sutible to water pipes fields.We have passed ISO9001,ISO14001,OHSMS18001 certificate.

2.Main Features of the Ductile Iron Pipe:
1. Material: Ductile iron grade 500-7/ 450-10 in accordance with ISO1083
2. Standard: ISO 2531, EN545, EN598, ANSI, AWWA
3. Certificate: ISO9001, ISO14001, SGS, NSF, WRAS
4. Test: In accordance with ISO 2531 / EN 545 / EN598 and 100% water pressure test
5. Length: 6m or cut into 5.6m, 5.7m, 5.8m
6. Internal Lining: Cement, conform to ISO4179
7. External coating: Zinc + Bitumen, conform to ISO8179
3.Ductile Iron Pipe Images:

Ductile Iron Pipe Standard:ISO2531 Length: 6M/NEGOTIATED

4.Ductile Iron Pipe Specification:
Standard: API SPEC 5L 44th eidtion,ASTM A252-98(2007)
Grade: A53 Grades A/B, ASTM A106 Grades B/C,ASTM A179
AWWA, C200, ASTM A139, ASTM A120, API 5L Grade B
X42, X52, X56, X60, X65, X70, X80, X100
Weld Alternatives: LSAW
OD size range: 6.4~44.5mm
Wall thickness: 406.4~1422mm
5.FAQ:
1.Q: Why would you choose ductile iron pipe rather than other pipe materials?
A:The reasons are obvious for that not only ductile iron pipe possesses the inherent strength and flexibility of ductile iron, combined with proven corrosion protection systems, but also the cost savings can be achieved from design to installation and commissioning.
2.Q:Why can you guarantee the inner of pipes can’t be corroded?
A: High alumina cement mortar lining and sulphate-resistant cement mortar lining. These two special linings are applicable to inner anti-corrosion for sewage pipes, improving resistance to erosion of the sewage components.

Q:Can ductile iron pipe be used for oil and gas transmission pipelines?: Yes, ductile iron pipe can be used for oil and gas transmission pipelines. It offers excellent strength, durability, and corrosion resistance, making it suitable for the transportation of various fluids, including oil and gas. However, other factors such as specific project requirements, operating conditions, and regulatory standards should also be considered before making a final decision.

Q:What is the lifespan of ductile iron pipes?: The lifespan of ductile iron pipes can vary depending on various factors such as the quality of the pipes, the installation conditions, and the environment in which they are used. However, on average, ductile iron pipes have a lifespan of around 50 to 100 years. This makes them a durable and long-lasting option for water and sewer infrastructure. With proper maintenance and regular inspections, ductile iron pipes can continue to function effectively and efficiently for several decades. It is important to note that factors like corrosion, soil conditions, and water chemistry can impact the lifespan of these pipes, so monitoring and addressing these issues can help extend their lifespan.

Q:What material is ductile cast iron 235A?: Nodular cast iron by spheroidization and inoculation by spherical graphite, effectively improve the mechanical properties of cast iron, especially the plasticity and toughness increased, resulting in higher than carbon steel. The strength of nodular cast iron is a kind of high strength cast iron material developed in 50s twentieth Century, its comprehensive performance is close to the steel. It is based on its excellent performance, has been successfully used in casting complex stress, strength, toughness and wear resistance requirements of the higher parts. Ductile iron has been the rapid development of cast iron material for application of gray cast iron, only very widely. The so-called "iron steel", mainly refers to the ductile iron.

Q:How do ductile iron pipes handle water hammer?: Ductile iron pipes are known for their excellent resistance to water hammer, which refers to the sudden increase in pressure and velocity of water flow within a pipe system. This phenomenon occurs when there is a sudden change in the water's velocity, such as when a valve is closed abruptly or a pump is suddenly shut off. Ductile iron pipes are designed to withstand high-pressure surges caused by water hammer. Their enhanced strength and flexibility enable them to absorb and dissipate the energy generated during these pressure surges. The ductility of the material allows the pipe to deform slightly under the impact of the water hammer, preventing the pipe from rupturing or breaking. Moreover, ductile iron pipes have inherent damping properties, which means they can absorb and dissipate the energy of water hammer more effectively compared to other pipe materials. This helps to reduce the intensity and duration of the pressure surges, minimizing the potential damage to the pipe system and its components. Additionally, ductile iron pipes are often equipped with various fittings and accessories that further enhance their ability to handle water hammer. These include specialized joint designs, such as restrained joints or flexible couplings, which provide additional flexibility and resistance to pressure surges. Overall, ductile iron pipes are specifically engineered to handle the challenges posed by water hammer. Their strength, flexibility, damping properties, and specialized fittings make them an ideal choice for applications where water hammer is a concern, providing a reliable and durable solution for water distribution systems.

Q:Can ductile iron pipes be used in areas with high soil erosion?: Ductile iron pipes, due to their inherent strength and durability, can be used in areas with high soil erosion. Ductile iron is a type of iron that has been treated with graphite nodules, which enhances its flexibility and tensile strength. This makes it highly resistant to cracking and breaking, even under extreme conditions. In areas with high soil erosion, the ground is prone to shifting and movement, which can put significant stress on underground pipes. However, ductile iron pipes have a high resistance to external loading and can withstand the pressures exerted by the surrounding soil. They have been extensively tested and proven to be reliable in such environments. Furthermore, ductile iron pipes have a long lifespan, often exceeding 100 years, which makes them a cost-effective choice for areas with high soil erosion. Their corrosion resistance and structural integrity make them suitable for installation in various soil conditions, including those prone to erosion. It is important to note that proper installation techniques, such as using suitable bedding and backfill materials, should be followed to ensure the optimal performance of ductile iron pipes in areas with high soil erosion. Additionally, regular inspection and maintenance should be conducted to identify any potential issues early on and prevent any damage caused by soil erosion. Overall, ductile iron pipes are a reliable and durable option for areas with high soil erosion, providing long-lasting and efficient water distribution and wastewater management systems.

Q:What are the advantages of cast iron pipes?: The cast iron pipe has good sealing performance and is not easy to leak. It can reduce the leakage rate of the pipe network and reduce the daily maintenance cost of the pipe network

Q:How is ductile iron pipe manufactured?: Ductile iron pipe is manufactured through a specific process known as centrifugal casting. The process starts with the melting of iron in a furnace, where specific elements such as carbon and silicon are added to achieve the desired properties. Once the iron is melted, it is poured into a spinning mold or a die that is rotating at a high speed. As the molten iron is poured into the rotating mold, centrifugal force pushes the liquid metal towards the inner surface of the mold. This force causes the metal to solidify from the outer surface inward. This results in a pipe with a dense outer layer and a more porous inner layer. The centrifugal casting process ensures that the pipe's outer surface is free from impurities and defects, ensuring its strength and durability. After the pipe has solidified, it is removed from the mold and undergoes further processing. The pipe is cleaned, excess material is trimmed off, and any surface imperfections are removed. It is then treated with a protective coating, such as zinc or epoxy, to enhance its corrosion resistance. The final step in the manufacturing process is quality control and testing. Ductile iron pipes are subjected to various tests to ensure they meet the required standards, including hydrostatic pressure testing, dimensional inspection, and internal and external coating inspection. In summary, ductile iron pipe is manufactured through the centrifugal casting process, which involves melting iron, pouring it into a rotating mold, and allowing it to solidify under centrifugal force. The resulting pipe is then cleaned, coated, and undergoes rigorous quality control to ensure its strength, durability, and adherence to standards.

Q:What is the expected joint flexibility of ductile iron pipes?: The expected joint flexibility of ductile iron pipes is typically high due to their inherent material properties. Ductile iron is known for its excellent ductility, which refers to its ability to deform without fracturing. This characteristic allows ductile iron pipes to withstand external loads, ground movement, and pressure fluctuations without major damage. The joints in ductile iron pipes are typically designed to provide additional flexibility and accommodate movement. The most common joint type used in ductile iron pipes is the push-on joint, which allows for angular deflection and axial movement. These joints consist of a rubber gasket that creates a watertight seal and allows for slight movement between pipe sections. The expected joint flexibility depends on various factors, including the pipe diameter, joint type, and installation methods. Generally, ductile iron pipes can accommodate angular deflection up to a certain degree, typically ranging from 5 to 10 degrees, depending on the joint design. Axial movement can also be accommodated to some extent, allowing for expansion and contraction of the pipe system. It is important to note that joint flexibility may vary depending on the specific manufacturer and product specifications. Therefore, it is recommended to consult the manufacturer's guidelines and specifications for the expected joint flexibility of a particular ductile iron pipe product.

Q:How can the old water pipe ductile iron pipe be opened with three flanges?: First, the new process adopted; groove connection. With groove pieces, of course, ductile iron pipes should also be grooved pipes.Two, the old process1. dozen to lead lead; cut into strips, with a file play in the interface2. use expanded cement with asbestos3 use the asphaltBecause the interface material used in the old process is poisonous, especially in the water supply pipeline, environmental protection requires a new process now.

Q:What is the exterior anticorrosion of nodular cast iron pipes?: First clean the impurity on the surface of the pipe or fitting, and then sprayed zinc treatment (130g/m and asphalt paint coating fand) not less than 70 m

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