DUCTILE IRON PIPE DC Class DN 350

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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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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:How can the ductile iron pipe elbow be fixed?: The groove connecting pipe consists of two categories of products: sealing function of pipe connections with rigid joint, flexible joint, mechanical three and groove flange; the pipe connections transition of elbow, three links, four links, different diameter pipe, blind plate etc..

Q:Can ductile iron pipe be used for wastewater treatment plant applications?: Yes, ductile iron pipe can be used for wastewater treatment plant applications. Ductile iron pipes have several properties that make them suitable for such applications. Firstly, ductile iron is highly resistant to corrosion, which is crucial in wastewater treatment plants where the presence of chemicals and water can lead to rust and degradation of pipes. Additionally, ductile iron pipes have high tensile strength and durability, making them able to withstand the demands of wastewater treatment processes. Furthermore, ductile iron pipes are also known for their flexibility, which allows for easy installation and maintenance in complex wastewater treatment systems. Overall, ductile iron pipe is a reliable and cost-effective choice for wastewater treatment plant applications.

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:What are the different lining materials available for ductile iron pipe?: There are several different lining materials available for ductile iron pipes. These linings are used to protect the pipe from corrosion and extend its lifespan. Some common lining materials include: 1. Cement Mortar Lining: This lining consists of a layer of cement mortar applied to the interior surface of the pipe. It provides a smooth and durable barrier against corrosion and is commonly used in water and wastewater applications. 2. Polyethylene Encasement: Polyethylene encasement involves wrapping the pipe with a layer of polyethylene film. This lining provides excellent corrosion protection and is often used in aggressive soil conditions. 3. Polyurethane Lining: Polyurethane lining is a spray-applied material that forms a seamless and flexible barrier inside the pipe. It offers superior resistance to chemicals and abrasion, making it suitable for applications involving aggressive fluids. 4. Epoxy Lining: Epoxy lining is a popular choice for lining ductile iron pipes, as it provides excellent resistance to corrosion and chemicals. It is typically applied as a liquid coating that cures to form a smooth and protective layer. 5. Zinc Coating: Zinc coating, also known as galvanizing, involves applying a layer of zinc to the exterior surface of the pipe. This lining provides corrosion resistance and is commonly used in outdoor and exposed applications. These lining materials offer different advantages and are chosen based on the specific needs of the application. Factors such as the type of fluid being transported, environmental conditions, and expected service life are considered when selecting the most suitable lining material for ductile iron pipes.

Q:How does ductile iron pipe perform in seismic areas?: Ductile iron pipe performs exceptionally well in seismic areas due to its inherent strength and flexibility. Seismic activity can subject pipelines to significant ground movements and vibrations, and ductile iron pipes have proven to be highly resilient in such conditions. The unique properties of ductile iron, including its high tensile strength and ductility, allow it to absorb the energy generated during seismic events. This ability to flex and bend without breaking or fracturing makes it an excellent choice for areas prone to earthquakes. Furthermore, ductile iron pipes are designed and manufactured to withstand external forces and ground movements. They are often installed with flexible joints that can accommodate ground shifts and maintain the integrity of the pipeline system. These joints can absorb lateral and angular movements, reducing the risk of pipe failure. Additionally, ductile iron pipes have a long history of successful performance in seismic areas. They have been extensively tested and proven to meet or exceed industry standards for seismic resistance. This reliability is crucial in ensuring the safety and functionality of water and wastewater systems, even in the event of a seismic event. Overall, ductile iron pipe is a reliable and durable choice for pipelines in seismic areas. Its ability to withstand ground movements, its flexibility, and its proven track record make it an excellent option for ensuring the integrity and functionality of water and wastewater systems in earthquake-prone regions.

Q:Are ductile iron pipes resistant to acid attacks?: Yes, ductile iron pipes are generally resistant to acid attacks. Ductile iron is a type of cast iron that has been treated with magnesium to improve its strength and ductility. This treatment creates a more resistant material that can withstand corrosive environments, including acids. However, it is important to note that the level of resistance may vary depending on the specific acid and concentration involved. In highly corrosive environments, such as those with strong acids or high concentrations, additional protective measures such as lining or coating the pipes may be necessary. Additionally, regular inspection and maintenance are also important to ensure the long-term durability and resistance of ductile iron pipes.

Q:What is ductile iron pipe?: Ductile iron pipe is a kind of cast iron pipe. In quality, the spheroidization of cast iron pipes is controlled to be 1-3 (spheroidization rate 80%), so the mechanical properties of the material have been better improved, with the nature of iron and the properties of steel. Ductile cast iron pipe after annealing, the microstructure is ferrite and pearlite, good mechanical properties, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc..

Q:Can ductile iron pipes be used for irrigation of golf courses?: Yes, ductile iron pipes can be used for irrigation of golf courses. Ductile iron pipes are known for their durability, strength, and resistance to corrosion, making them suitable for various applications, including irrigation systems. They can withstand high-pressure water flow and are less likely to crack or break compared to other materials. Additionally, ductile iron pipes have a longer lifespan, reducing the need for frequent maintenance or replacement. Therefore, they are a reliable choice for irrigating golf courses, where a consistent and efficient water supply is crucial for maintaining healthy turf and landscaping.

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 are ductile iron pipes tested for quality assurance?: Ductile iron pipes undergo various testing procedures to ensure their quality and meet industry standards. These quality assurance tests are conducted on both raw materials and finished products to ensure the durability, strength, and overall reliability of ductile iron pipes. One of the initial tests is the chemical analysis of the raw materials used in manufacturing the pipes. This analysis ensures that the composition of the iron, carbon, and other elements is within the specified range, as different compositions can affect the pipe's strength and corrosion resistance. Next, mechanical tests are performed to evaluate the strength and ductility of the pipes. Tensile tests are conducted to determine the ultimate tensile strength, yield strength, and elongation properties of the pipe. This helps in assessing the pipe's ability to withstand external pressure or bending forces. Additionally, impact tests are performed to evaluate the pipe's resistance to sudden loading or impact. This test measures the energy absorbed by the pipe when subjected to a high impact force, ensuring that it can withstand potential accidental impacts during installation or operation. Another critical test is the hydrostatic pressure test, which checks the pipes' ability to withstand internal pressure. In this test, the pipes are filled with water and subjected to a specified pressure for a specific duration. This ensures that the pipes can withstand the expected operating pressure without any leakage or failure. Furthermore, dimensional and visual inspections are conducted to ensure that the pipes meet the required specifications. These inspections include checking the pipe's outer diameter, length, wall thickness, and overall appearance for any defects, such as cracks, voids, or irregularities. Lastly, corrosion resistance tests are performed to assess the pipe's ability to resist corrosion when exposed to different environments or fluids. This helps in determining the expected lifespan of the pipes and their suitability for various applications. Overall, these quality assurance tests play a crucial role in ensuring that ductile iron pipes meet the required standards and provide reliable and long-lasting performance in various infrastructure projects.

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