DUCTILE IRON PIPE DN1200 c

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

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Supply Capability:: 30000Tons m/month

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Duct Iron Pipe DI Pipe ISO 2531 DN 80-2000mm PN 16

CNBM ductile iron pipe ranges from DN80-DN1600mm (T-Type, Class K9), effective length 6m, comply with ISO2531 Standard

Company Profile

CNBM International Corporation is the leading production base and renowned supplier of Ductile Iron Water Pipe systems of both potable and waste water in China. We are constantly looking to develop high quality products to ensure the longest service life and wonderful performance.

CNBM Pipelines regard quality as the essential factor leading to successful business. Every pipe is tested in accordance with BS EN545 (water application) or BS EN598 (sewer application). CNBM Pipelines products comply with and are tested according to the relevant European and International Standards. Our pipes are manufactured under the quality management system BS EN ISO 9001. After years of efforts, CNBM Pipelines has built up great reputation in terms of quality and service among customers worldwide

Product Introduction

CNBM ductile iron pipe ranges from DN80-DN1600mm (Tyton, T-Type, Class K7/K8/K9), effective length: 6m, complying with BS EN545/EN598/ISO2531/BS4772.

Specification& Payment terms

Internal lining: Pipes shall have an internal cement mortar lining in acc with ISO4179.

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

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

Packing: Pipes from DN100 to DN300 be bundled with steel belts, the others are in bulk.

Payment term: By 30% T/T advance payment + 70% Irrevocable L/C at sight.
Packing: In bulk vessel or in container.

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 environment they are installed in, and the level of maintenance they receive. However, on average, ductile iron pipes have a lifespan of approximately 80-100 years.

Q: Can ductile iron pipes be used for water distribution networks in rural areas?: Yes, ductile iron pipes can be used for water distribution networks in rural areas. Ductile iron pipes are known for their high strength and durability, making them suitable for various applications, including water distribution. They have excellent resistance to external loads and pressure, making them ideal for underground installations. In rural areas where the water distribution network may be subjected to harsh environmental conditions or agricultural activities, ductile iron pipes can withstand external forces and resist corrosion better than other materials. They are also less prone to cracking or leaking, ensuring a reliable water supply for rural communities. Moreover, ductile iron pipes have a long service life, often exceeding 100 years. This makes them a cost-effective choice for rural water distribution networks, as they require minimal maintenance and replacement over time. However, it is important to consider other factors such as the availability of ductile iron pipes in the area, the cost of installation, and the technical expertise required for their installation and maintenance. Additionally, local regulations and standards should be followed to ensure compliance and safety. Overall, ductile iron pipes can be a suitable and reliable option for water distribution networks in rural areas, providing a long-lasting and efficient solution for delivering clean water to communities.

Q: Are ductile iron pipes resistant to hydrostatic pressure?: Yes, ductile iron pipes are resistant to hydrostatic pressure. Ductile iron is a type of cast iron that is known for its strength and durability. It has excellent mechanical properties, including high tensile strength and elasticity, which enable it to withstand high levels of hydrostatic pressure. This makes ductile iron pipes well-suited for applications where water or other fluids need to be transported under pressure, such as in water distribution systems, sewer lines, and industrial pipelines. Additionally, ductile iron pipes have a high resistance to corrosion, which further enhances their ability to withstand hydrostatic pressure and ensures their long-term performance and reliability.

Q: What are the different joint restraint systems available for ductile iron pipe?: There are several different joint restraint systems available for ductile iron pipe. These systems are designed to prevent movement and separation of the pipe at the joints, ensuring a secure and leak-free connection. Some of the common joint restraint systems for ductile iron pipe include: 1. Mechanical Joint Restraint: This system consists of a mechanical joint adapter and a restraining gland that provides axial restraint. The joint adapter is bolted to the pipe, while the restraining gland is bolted to the adjacent pipe or structure, preventing any movement. 2. Push-on Joint Restraint: In this system, a push-on joint is used along with a restraining gland that is bolted to the pipe or structure. The gland provides axial restraint by gripping the pipe and preventing it from moving. 3. Flex-Ring Joint Restraint: This system utilizes a flexible rubber ring that is installed inside the pipe's bell. The ring provides radial restraint by expanding against the pipe, ensuring a tight and secure connection. 4. Harness Joint Restraint: This system consists of a harness that is wrapped around the pipe and connected to a restraining gland. The harness provides both axial and radial restraint, keeping the pipe in place and preventing any movement. 5. Grip-Lock Joint Restraint: This system utilizes a wedge-shaped restraint that is inserted into the pipe's bell. The wedge expands and locks into place, providing both axial and radial restraint. 6. Restrained Joint System: This system incorporates a combination of mechanical and flexible joint restraints. It typically includes a mechanical joint adapter, a flexible joint restraint, and a restraining gland, providing both axial and radial restraint. These joint restraint systems are designed to meet specific application requirements and are often specified by engineers based on factors such as pipe diameter, operating pressure, and soil conditions. Each system has its own advantages and limitations, and the selection depends on the specific project needs and constraints.

Q: Are ductile iron pipes resistant to acid mine drainage corrosion?: Yes, ductile iron pipes are generally resistant to acid mine drainage (AMD) corrosion. Ductile iron is a highly durable material that has been widely used in various industries, including mining and water distribution, due to its excellent corrosion resistance properties. Acid mine drainage is a significant environmental problem that occurs when water comes into contact with sulfide minerals in mining areas, resulting in the formation of sulfuric acid. This acid can corrode and deteriorate various materials, including pipes, leading to infrastructure damage and water contamination. Ductile iron pipes have a protective layer formed by a cementitious lining, typically made of cement mortar or an epoxy coating. This lining acts as a barrier between the corrosive AMD and the pipe material, preventing direct contact and reducing the likelihood of corrosion. Furthermore, ductile iron pipes have a high resistance to both internal and external corrosion, making them well-suited for environments where acid mine drainage may be present. They have proven to be highly reliable and long-lasting even in harsh conditions, ensuring the continued integrity of the water distribution system and minimizing the potential for leaks or failures. However, it is important to note that the resistance of ductile iron pipes to acid mine drainage corrosion can also depend on several other factors, such as the specific composition and concentration of the AMD, the duration of exposure, and the temperature. Therefore, it is recommended to consult with experts and conduct proper material testing and analysis to ensure the suitability of ductile iron pipes in specific AMD environments.

Q: What are the different types of restrained joints for ductile iron pipe?: There are several different types of restrained joints for ductile iron pipe. These joints are designed to prevent pipe separation or movement due to internal pressure, external forces, or ground movement. Some of the commonly used restrained joints for ductile iron pipe include: 1. Mechanical Restrained Joint: This type of joint uses mechanical devices such as bolts, nuts, and gaskets to hold the pipe in place. The joint is typically made up of a gland, a gland follower, and a restraint ring. The gland and gland follower compress the gasket against the pipe, while the restraint ring provides additional support and resistance against movement. 2. Push-on Restrained Joint: This joint utilizes a rubber gasket that is compressed when the two pipe ends are pushed together. The gasket provides a tight seal and also acts as a restraint against movement. Some push-on restrained joints also include additional mechanical devices to enhance the restraint capability. 3. Restrained Flange Joint: This type of joint combines the features of a flanged joint and a restrained joint. It consists of a flanged pipe end that is bolted to a flange on another pipe or fitting. The bolts and nuts provide the mechanical restraint, while the flange connection ensures a secure and leak-free joint. 4. Restrained Coupling Joint: This joint is a variation of the mechanical restrained joint. It utilizes a coupling that is bolted or clamped around the pipe ends, providing the necessary restraint. The coupling may also have a gasket to ensure a tight seal. 5. Restrained Socket Joint: This joint is similar to the push-on restrained joint, but it includes additional mechanical devices to enhance the restraint capability. The socket end of the pipe is typically designed to receive a pipe spigot, which is then secured using bolts, clamps, or other mechanical devices. These different types of restrained joints for ductile iron pipe offer varying levels of restraint and are selected based on the specific requirements of the application. They ensure the integrity and stability of the pipeline system, reducing the risk of leaks, pipe separation, or movement.

Q: How does ductile iron pipe handle traffic loads and vibrations?: Ductile iron pipe is known for its excellent strength and flexibility, allowing it to efficiently handle traffic loads and vibrations. Its superior durability and resilience enable it to withstand heavy vehicle traffic without experiencing significant deformation or damage. Additionally, the material's inherent vibration-damping properties help to minimize the transmission of vibrations caused by traffic, ensuring a smoother and quieter flow of traffic. Overall, ductile iron pipe is a reliable and robust choice for managing traffic loads and vibrations effectively.

Q: How is ductile iron pipe protected against external corrosion?: Ductile iron pipe is protected against external corrosion through a process called external coating. This involves applying a layer of protective coating, such as asphaltic or epoxy, on the outside surface of the pipe. The coating acts as a barrier, preventing moisture and corrosive substances from coming into contact with the iron, thus reducing the risk of corrosion. Additionally, cathodic protection methods, such as applying sacrificial anodes or using impressed current systems, may be employed to further enhance the corrosion resistance of the ductile iron pipe.

Q: How do ductile iron pipes handle differential settlement?: Ductile iron pipes possess exceptional durability and are renowned for their ability to endure diverse environmental conditions, including differential settlement. Differential settlement refers to the uneven settling of the ground, which can often impose stress and strain on underground pipes. Specifically engineered to address settlement issues, ductile iron pipes exhibit inherent flexibility and strength. These pipes possess the capacity to flex and accommodate slight ground movements without incurring significant damage or failure. The flexibility of ductile iron pipes enables them to evenly distribute the stress and strain caused by differential settlement along their length. This characteristic assists in averting concentrated stress points that could potentially result in cracks or fractures in the pipe. Furthermore, the inherent strength of ductile iron pipes equips them with the necessary resistance to withstand the forces generated by differential settlement. The pipes' robust construction and high tensile strength render them less susceptible to deformation or damage caused by ground movements. Moreover, ductile iron pipes are commonly installed with flexible joints, such as rubber gaskets or push-on joints. These joints permit some movement and adapt to any slight misalignment or settlement that may occur. By providing flexibility at the joints, the pipes can better adjust to changes in ground conditions and diminish the risk of failure. In conclusion, ductile iron pipes possess the necessary attributes to effectively cope with differential settlement due to their flexibility, strength, and utilization of flexible joints. These features guarantee that the pipes can endure ground movements and continue to function efficiently without compromising their integrity or longevity.

Q: Are ductile iron pipes suitable for wastewater pumping stations?: Yes, ductile iron pipes are suitable for wastewater pumping stations. Ductile iron has high tensile strength, durability, and corrosion resistance, making it ideal for handling the abrasive and corrosive nature of wastewater. Additionally, ductile iron pipes have excellent pressure-bearing capabilities, ensuring reliable and efficient operation in wastewater pumping stations.

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