Ductile Iron Cast Iron Pipe of China DN400-DN1000 EN545/EN598/ISO2531

Ductile Iron Cast Iron Pipe of China DN400-DN1000 EN545/EN598/ISO2531

Ref Price:: $470.00 - 510.00 / m.t.

Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 20 m.t.

Supply Capability:: 50000 m.t./month

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1,Ductile Iron Pipe Description :

1) Pipes confirm to ISO2531,K9 class,T type joint,6m long,with inside cements lining conform to ISO4179, outside Zinc spraying(130g/m2) and bitumen coating(70μm) conform to ISO8179.

2) Pipe ends: Spigot and socket ends, with 100% SBR rubber gaskets accoding to ISO4633

3) we can do third party inspection according to customer's request.

4) Our products have been sold to many international market,such as Middle East and South East Asia and Africa.

2,Main Features of the Ductile Iron Pipe:

Material: Ductile iron grade 500-7/ 450-10 in accordance with ISO1083

Standard: ISO 2531, EN545, EN598, ANSI, AWWA

Certificate: ISO9001, ISO14001, SGS, NSF, WRAS

Test: In accordance with ISO 2531 / EN 545 / EN598 and 100% water pressure test

Length: 6m or cut into 5.6m, 5.7m, 5.8m

Internal Lining: Cement, conform to ISO4179

External coating: Zinc + Bitumen, conform to ISO8179

Rubber: NBR, SBR, EPDM according to ISO4633 / EN681.1

Note: The gaskets, bolts & nuts are supplied respectively as your special requirement

3,Ductile Iron Pipe Images:

Ductile Iron Cast Iron Pipe of China DN6400

4. Ductile Iron Pipe Specification

Internal lining: ductile iron pipes shall have an internal cement mortar lining in acc with ISO4179.

External coating: ductile iron pipes shall be externally coated with metallic zinc spray plus a further layer of resin painting to ISO8179.

Gasket: 100% SBR/NBR/EPDM rubber gasket in accordance with ISO4633.

Packing: ductile iron pipes from DN100 to DN300 be bundled with steel belts, others are in bulk.

Payment term: L/C, T/T.
Packing: In bulk vessel or in container

5.FAQ:

We have organized several common questions for our clients，may help you sincerely：

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: What is the expected joint tightness for ductile iron pipes?: The expected joint tightness for ductile iron pipes is typically high. Ductile iron pipes are known for their strong and durable nature, making them highly resistant to leaks and joint failures. The joints in ductile iron pipes are usually designed to provide a secure and tight connection, ensuring minimal water or fluid loss. Various joint types are commonly used for ductile iron pipes, including mechanical joints, restrained joints, and push-on joints. Each of these joint types is designed to provide a reliable seal and prevent any leakage. Mechanical joints use a mechanical gland and rubber gaskets to create a tight seal. These joints require a certain level of torque during assembly to ensure proper compression and sealing. Restrained joints, on the other hand, are specifically designed to withstand external forces, such as soil movement or pressure, and maintain their tightness. These joints typically use a mechanical restraint system, such as a key-locking mechanism, to prevent joint separation. Push-on joints are the easiest to install and provide a secure seal by utilizing a rubber gasket that is compressed when the pipes are pushed together. These joints are commonly used in smaller diameter pipes where the external forces are minimal. Overall, ductile iron pipes are expected to have a high level of joint tightness, ensuring reliable and leak-free performance in various applications, including water distribution, wastewater systems, and industrial piping networks.

Q: Can ductile iron pipes be used for underwater installations?: Yes, ductile iron pipes can be used for underwater installations. Ductile iron is a strong and durable material that can withstand the harsh conditions of underwater environments, making it suitable for various applications such as water distribution, sewage systems, and marine infrastructure.

Q: Are ductile iron pipes suitable for use in irrigation sprinkler systems?: Yes, ductile iron pipes are suitable for use in irrigation sprinkler systems. Ductile iron pipes are known for their durability, strength, and corrosion resistance, making them an ideal choice for various applications, including irrigation systems. These pipes have a high tensile strength and can withstand high pressure and heavy loads, which is essential for maintaining a consistent water supply to sprinkler systems. Additionally, ductile iron pipes have a long lifespan, reducing the need for frequent maintenance and replacement, making them a cost-effective option for irrigation systems. Overall, ductile iron pipes are a reliable and suitable choice for use in irrigation sprinkler systems.

Q: Are ductile iron pipes suitable for use in acidic environments?: Ductile iron pipes are generally not suitable for use in highly acidic environments. While ductile iron is known for its strength and durability, it does have limitations when it comes to acidic conditions. Acidic environments tend to corrode and degrade ductile iron pipes over time. In acidic conditions, the acid can react with the iron in the pipe, causing corrosion and ultimately leading to pipe failure. The rate of corrosion depends on various factors such as the concentration and type of acid, temperature, and the duration of exposure. Acidic environments with pH levels below 4 or 5 can significantly accelerate the corrosion process. To overcome this limitation, other materials like stainless steel or corrosion-resistant alloys such as PVC or HDPE (high-density polyethylene) pipes are often recommended for use in acidic environments. These materials have better resistance to corrosion and can withstand the harsh conditions associated with acidic environments. However, if ductile iron pipes are used in mildly acidic conditions or if measures are taken to protect them from corrosion, they may still be suitable. Applying protective coatings or linings to the pipes can help minimize the corrosive effects of acids. It is essential to consult with experts or engineers familiar with the specific conditions and requirements of the project to determine the most suitable material for use in acidic environments.

Q: How is ductile iron pipe tested for quality?: Extensive quality testing is carried out on ductile iron pipe to ensure its performance and reliability in various applications. The pipe undergoes a series of steps to assess its physical and mechanical properties. The hydrostatic pressure test is one of the main tests performed on ductile iron pipe. This test involves subjecting the pipe to fluid pressure that exceeds its designed operating pressure. The purpose is to determine if the pipe can withstand internal pressure without any leakage or failure. The pipe is filled with water or another suitable fluid, and the pressure is gradually increased to the required level. During this test, the pipe is carefully inspected for any signs of leakage or deformation. Another essential test is the tensile strength test, which measures the pipe's ability to resist pulling or stretching forces. A sample of the pipe is pulled until it breaks, and the maximum force applied during the test is recorded. This test helps determine important properties such as the pipe's ultimate tensile strength, yield strength, and elongation. The Charpy test is used to assess the pipe's impact resistance. In this test, a notched sample is struck with a swinging pendulum to measure the amount of energy absorbed by the pipe. It helps determine if the pipe can withstand sudden impacts or loads without fracturing. In addition to these tests, the pipe also undergoes various non-destructive tests, including ultrasonic testing, magnetic particle inspection, and visual inspection. These tests are crucial in detecting any internal or external defects, cracks, or abnormalities that could compromise the pipe's structural integrity. Furthermore, chemical analysis and metallographic examination are performed to evaluate the chemical composition and microstructure of the ductile iron pipe. These tests ensure that the pipe meets the necessary specifications and standards for its intended application. Overall, the testing process for ductile iron pipe is thorough and stringent. Its purpose is to guarantee the pipe's quality, durability, and overall performance in safely and efficiently delivering water, wastewater, or other fluids.

Q: How do ductile iron pipes handle soil erosion?: Ductile iron pipes are renowned for their exceptional strength and durability, rendering them highly resistant to the erosion of soil. The specific engineering of the material used in these pipes ensures their ability to withstand the detrimental effects of soil erosion, thereby guaranteeing long-lasting and dependable infrastructure. The composition of ductile iron pipes comprises a blend of iron, carbon, and other alloying elements, providing the necessary strength and resilience to withstand the forces exerted by soil erosion. These pipes possess a greater tensile strength than conventional cast iron pipes, enabling them to withstand pressure without deforming or cracking. Furthermore, ductile iron pipes boast a protective layer known as cement mortar lining, which acts as a barrier between the pipe and the surrounding soil. This lining offers an additional layer of resistance against corrosion and erosion caused by the chemical composition or abrasive particles present in the soil. Consequently, ductile iron pipes remain intact and continue to function effectively, even in areas experiencing high rates of soil erosion. In terms of installation, ductile iron pipes are specifically designed to be buried underground, ensuring their robust protection from direct contact with the soil. Additionally, their jointing systems are designed to provide secure and watertight connections, minimizing the risk of soil infiltration and subsequent erosion. Overall, ductile iron pipes have a proven track record of effectively combating soil erosion due to their superior strength, protective linings, and appropriate installation techniques. They offer a reliable and long-lasting solution for water and wastewater infrastructure, even in regions prone to soil erosion.

Q: Can ductile iron pipes be used for water supply in buildings?: Ductile iron pipes are indeed a viable option for water supply in buildings. Renowned for their strength, durability, and resistance to corrosion, these pipes are well-suited for a wide range of uses, including water supply systems. With their impressive tensile strength, they can endure high-pressure conditions, making them perfect for delivering water to buildings. Furthermore, ductile iron pipes boast a lengthy lifespan, minimizing the necessity for frequent replacements. They also display excellent flow properties, facilitating efficient water distribution within structures. Consequently, ductile iron pipes are a dependable and frequently selected choice for water supply systems in buildings.

Q: What are the advantages and disadvantages of spheroidal graphite cast iron?: Therefore, ductile iron pressure containing parts are treated with a ferritizing annealing cycle, the globular structure of ductile iron internal can also eliminate the crack phenomenon of iron easy to produce graphite flakes within the. In microscopic photographs of ductile iron, cracks can be seen and terminated after the parade of graphite balls. In the ductile iron industry, these graphite balls are called "crack terminator" because they have the ability to prevent fracture.

Q: Can ductile iron pipe be used for agricultural irrigation systems?: Yes, ductile iron pipe can be used for agricultural irrigation systems. It is a strong and durable material that can withstand the high pressures and corrosive environments often found in agricultural irrigation systems. Additionally, ductile iron pipe has excellent resistance to external loads and impact, making it suitable for various soil conditions in agricultural fields.

Q: Can ductile iron pipes be used for firefighting systems?: Yes, ductile iron pipes can be used for firefighting systems. Ductile iron is a strong and durable material that can withstand high pressures and extreme temperatures, making it suitable for transporting water in firefighting systems. Its ability to resist corrosion and withstand external loads also ensures the long-term reliability and performance of the pipes. Additionally, ductile iron pipes have excellent fire resistance properties, as they do not burn, emit toxic fumes, or contribute to the spread of fire. Therefore, ductile iron pipes are a reliable and commonly used choice for firefighting systems due to their strength, durability, and fire resistance.

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