DUCTILE IRON PIPE DN250 K7 CLASS

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: -

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 does ductile iron pipe perform in high-temperature environments?: Ductile iron pipe performs exceptionally well in high-temperature environments due to its unique properties and characteristics. The material is known for its high strength, toughness, and durability, making it suitable for various applications including those involving elevated temperatures. One of the key advantages of ductile iron pipe in high-temperature environments is its ability to withstand thermal expansion and contraction. The material has a low coefficient of thermal expansion, which means it can handle significant temperature fluctuations without experiencing detrimental effects. This property ensures that the pipe remains structurally stable and does not deform or crack when exposed to high temperatures. Additionally, ductile iron pipe has excellent thermal conductivity. This property allows the pipe to efficiently transfer heat, preventing the build-up of excessive heat and reducing the risk of thermal stress. The high thermal conductivity of ductile iron also enables it to dissipate heat quickly, ensuring that the pipe remains within safe operating temperatures. Furthermore, ductile iron pipe has a high melting point, typically around 2200°F (1200°C). This characteristic ensures that the pipe retains its structural integrity even in extremely high-temperature environments. It can effectively handle hot fluids, steam, and other high-temperature substances without compromising its performance. Another crucial aspect is the corrosion resistance of ductile iron pipe. It is commonly coated with protective linings, such as cement mortar or epoxy, which provide an additional layer of defense against corrosion caused by high temperatures. These linings act as a barrier, preventing the pipe from coming into direct contact with corrosive substances and maintaining its longevity in high-temperature environments. In summary, ductile iron pipe is an excellent choice for high-temperature environments due to its exceptional strength, thermal stability, thermal conductivity, and corrosion resistance. Its ability to withstand thermal expansion, its high melting point, and its efficient heat transfer properties make it a reliable and durable option for various applications in such conditions.

Q: Do ductile iron pipes require special handling during transportation?: Yes, ductile iron pipes do require special handling during transportation. They are heavy and brittle, so they need to be loaded and unloaded carefully to prevent damage. Additionally, they should be properly secured and supported to avoid any bending or distortion during transit.

Q: What are the different methods for testing ductile iron pipe?: There are several methods available for testing ductile iron pipe to ensure its quality and reliability. These methods include: 1. Hydrostatic Testing: This is the most common method used for testing ductile iron pipe. It involves filling the pipe with water and pressurizing it to a specified level. The pipe is then inspected for any leaks or deformations under the applied pressure. Hydrostatic testing helps determine the pipe's ability to withstand internal pressure without failure. 2. Tensile Testing: This method involves subjecting a sample of the ductile iron pipe to a gradually increasing tensile load until it fractures. The test measures the ultimate tensile strength, yield strength, and elongation of the material. Tensile testing helps evaluate the pipe's mechanical properties and its ability to withstand tension without breaking. 3. Hardness Testing: This method measures the hardness of the ductile iron pipe using various techniques such as Brinell, Rockwell, or Vickers hardness tests. Hardness testing provides information about the material's resistance to deformation, wear, and fatigue. It helps assess the pipe's durability and resistance to external forces. 4. Impact Testing: This method involves striking a notched sample of the ductile iron pipe with a pendulum or falling weight to measure its impact resistance. The test determines the material's ability to absorb energy during sudden loading or impact. Impact testing helps evaluate the pipe's ability to withstand accidental impacts or dynamic loads. 5. Ultrasonic Testing: This non-destructive testing method uses high-frequency sound waves to detect internal defects or discontinuities in the ductile iron pipe. Ultrasonic testing can identify voids, cracks, or inclusions that may affect the pipe's structural integrity. It helps ensure the pipe's soundness and reliability. 6. Magnetic Particle Testing: This method is primarily used for detecting surface or near-surface defects in the ductile iron pipe. It involves applying a magnetic field to the pipe and then applying magnetic particles to the surface. Any defects present will cause the magnetic particles to gather and form visible indications. Magnetic particle testing helps identify surface cracks, laps, or other defects that may affect the pipe's performance. These different testing methods help ensure that ductile iron pipe meets industry standards and specifications, ensuring its quality and reliability in various applications.

Q: What are the advantages and disadvantages of spheroidal graphite cast iron?: Compared with cast iron, ductile iron has an absolute advantage in strength. The tensile strength of ductile iron is 60K, while the tensile strength of cast iron is only 31k. The yield strength of ductile iron is 40K, while the cast iron does not show yield strength, and eventually breaks. The strength to cost ratio of ductile iron is far superior to that of cast iron.

Q: How can the three pipes of ductile iron leak?: The raw material used in RE can be installed in the thread, can also be used on the same thread AB, re install is also available, but it is hard to remove.

Q: How do ductile iron pipes perform in high-temperature steam applications?: Ductile iron pipes are known for their exceptional performance in high-temperature steam applications. They have the ability to withstand elevated temperatures and maintain their structural integrity, making them highly suitable for use in steam distribution systems. One key advantage of ductile iron pipes in high-temperature steam applications is their excellent thermal conductivity. This property allows for efficient heat transfer, ensuring that the steam is delivered at the desired temperature without significant loss. The high thermal conductivity of ductile iron also helps to minimize the risk of thermal expansion and contraction, which can lead to pipe failure or leakage. Furthermore, ductile iron pipes have a high melting point, typically around 2000°F (1093°C), which makes them resistant to the extreme temperatures encountered in steam applications. This ability to withstand high temperatures without deformation or structural failure ensures the reliability and longevity of the piping system. Another important factor contributing to the performance of ductile iron pipes in high-temperature steam applications is their corrosion resistance. These pipes are typically coated with epoxy or other protective materials to prevent corrosion and maintain their structural integrity even in aggressive steam environments. This corrosion resistance helps to ensure that the pipes can withstand the harsh conditions and operate efficiently over an extended period. In summary, ductile iron pipes are well-suited for high-temperature steam applications due to their excellent thermal conductivity, high melting point, and corrosion resistance. These properties make them a reliable and durable choice for steam distribution systems, ensuring the safe and efficient transport of steam at elevated temperatures.

Q: How does ductile iron pipe compare to PVC pipe in terms of strength?: Generally, ductile iron pipe is considered stronger than PVC pipe due to its composition of iron and carbon, which provides it with high tensile strength and resistance to breakage. It is commonly utilized in heavy-duty applications like water mains, sewer lines, and industrial piping due to its ability to withstand high pressures. On the flip side, PVC pipe is manufactured using a plastic material known as polyvinyl chloride. While PVC pipe is lightweight and easy to handle, it lacks the strength of ductile iron pipe. It is typically used in low-pressure applications such as household plumbing, irrigation systems, and drainage pipes. When comparing the strength of ductile iron pipe to PVC pipe, the former has a greater capacity to handle heavy loads, endure ground movement, and resist damage from external factors like rocks or tree roots. Additionally, ductile iron pipe is more durable and has a longer lifespan in comparison to PVC pipe. However, it is important to consider that the choice between ductile iron pipe and PVC pipe ultimately depends on the specific requirements of the project. Factors such as cost, environmental conditions, ease of installation, and desired longevity should all be taken into account when determining the appropriate type of pipe to utilize.

Q: What are the different types of thrust restraints for ductile iron pipe?: Ductile iron pipe installations utilize various thrust restraints to prevent pipe movement or separation caused by internal pressure, external loads, or temperature changes. 1. Concrete thrust blocks are structures installed at bends, tees, and directional changes in the pipeline. Their purpose is to transfer thrust forces to the surrounding soil or foundation, effectively resisting pipe movement. 2. Mechanical restraints, such as tie rods or harnesses, are steel-based devices that apply external force to restrain the pipe. They can be adjusted to accommodate changes in pipe length or alignment. 3. Pipe anchors, made of steel, are installed at intervals along the pipeline to provide resistance against axial movement. These anchors are embedded into the surrounding soil or concrete, securing the pipe firmly. 4. Thrust collars, typically made of steel, encircle the pipe to prevent movement or separation. They are strategically placed along the pipeline to absorb thrust forces. 5. Restrained joint systems are specialized pipe joints designed to resist axial forces. They possess additional features like keyways or wedges, enhancing resistance against movement. Selecting the appropriate thrust restraint system for ductile iron pipe installations depends on factors such as pipe diameter, operating pressure, soil conditions, and potential external loads. Consulting with qualified engineers or pipe manufacturers ensures the proper selection and installation of thrust restraints.

Q: Can ductile iron pipes be used for river crossings?: Yes, ductile iron pipes can be used for river crossings. Ductile iron is a strong and durable material that can withstand the stresses and pressures of being installed underground and crossing rivers. It is commonly used in water and sewage systems, including river crossings, due to its resistance to corrosion and its ability to handle high water pressure.

Q: Can ductile iron pipes be used for water treatment facilities?: Yes, ductile iron pipes can be used for water treatment facilities. Ductile iron is a type of cast iron that has enhanced strength, flexibility, and durability. These properties make it suitable for use in various applications, including water treatment facilities. Ductile iron pipes have excellent corrosion resistance, which is crucial in water treatment facilities where the pipes come in contact with different chemicals and water contaminants. They can withstand the harsh conditions and chemicals found in water treatment processes, ensuring a long service life. Moreover, ductile iron pipes have high tensile strength and are capable of withstanding high pressure. This makes them suitable for carrying the water throughout the facility, including the distribution system, pumping stations, and treatment units. They can handle the required flow rates and pressures without compromising the integrity of the pipes. In addition, ductile iron pipes are known for their flexibility and resilience. They can withstand ground movement and other external stresses, minimizing the risk of pipe failures and leaks. This is important in water treatment facilities where pipes often pass through different terrains and undergo frequent maintenance activities. Furthermore, ductile iron pipes are cost-effective compared to other alternative pipe materials like steel or PVC. They have a long life span, require minimal maintenance, and have low failure rates, reducing the overall operational and maintenance costs for water treatment facilities. Overall, ductile iron pipes offer a reliable and durable solution for water treatment facilities. Their corrosion resistance, high tensile strength, flexibility, and cost-effectiveness make them a suitable choice for transporting water and chemicals within the facility, ensuring efficient and effective water treatment processes.

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