DUCTILE IRON PIPE C Class DN 900

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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 does ductile iron pipe perform in areas with high soil compaction?: Ductile iron pipe performs exceptionally well in areas with high soil compaction. One of the key advantages of ductile iron is its high strength and durability, which allows it to withstand heavy loads and pressures. In areas with compacted soil, where there is a greater likelihood of ground movement and settling, ductile iron pipe's superior structural integrity ensures that it remains intact and can effectively handle the stress. Additionally, ductile iron pipe has excellent resistance to corrosion. This is particularly important in areas with high soil compaction, as the compacted soil can often contain high levels of moisture or chemicals that may accelerate the corrosion process. Ductile iron's inherent resistance to corrosion helps maintain the pipe's integrity over time, even in challenging soil conditions. Another advantage of ductile iron pipe is its flexibility. This material has a high degree of flexibility, allowing it to absorb and distribute external loads more effectively. In areas with high soil compaction, where the ground may shift or settle, ductile iron's flexibility helps to minimize the risk of pipe failure or damage. Furthermore, ductile iron pipe has a smooth interior surface, which helps to improve its hydraulic performance. In areas with high soil compaction, where there may be limited space for proper compaction around the pipe, the smooth interior minimizes the risk of sediment buildup or clogging, ensuring efficient water flow. Overall, ductile iron pipe is an excellent choice for areas with high soil compaction. Its strength, corrosion resistance, flexibility, and hydraulic performance make it a reliable and durable option that can withstand the challenges posed by compacted soils.

Q:Are ductile iron pipes suitable for railway crossings?: Yes, ductile iron pipes can be suitable for railway crossings. Ductile iron is a strong and durable material that has been widely used in various applications, including water and sewage systems. Its high tensile strength and flexibility make it suitable for withstanding heavy loads and vibrations, which are common near railway crossings. Furthermore, ductile iron pipes have excellent resistance to corrosion, which is crucial in areas prone to moisture and exposure to different weather conditions. This resistance ensures the longevity of the pipes, reducing maintenance and replacement costs. Additionally, ductile iron pipes are known for their ease of installation and versatility. They can be easily connected with other types of pipes or fittings, allowing for a seamless integration into the overall railway crossing infrastructure. It is important to note that the suitability of ductile iron pipes for railway crossings also depends on various factors such as load requirements, soil conditions, and specific project specifications. Consulting with engineering professionals and adhering to industry standards and regulations is essential to ensure the appropriate selection and installation of ductile iron pipes for railway crossings.

Q:Do ductile iron pipes require additional protection against external factors?: Yes, ductile iron pipes do require additional protection against external factors. While ductile iron is known for its strength and durability, it is still susceptible to corrosion and other external threats that can lead to pipe failure. One of the main external factors that ductile iron pipes need protection from is corrosion. Corrosion can occur due to the presence of certain chemicals in soil or water, and it can weaken the pipe over time. To protect against corrosion, ductile iron pipes are often coated with an external protective layer such as polyethylene or zinc. This coating acts as a barrier between the pipe and the corrosive elements, extending the lifespan of the pipe. In addition to corrosion, ductile iron pipes may also require protection against physical damage. These pipes are typically buried underground, making them vulnerable to external forces such as heavy machinery, ground movement, or even vandalism. To safeguard against physical damage, ductile iron pipes can be encased in concrete or surrounded by a protective sleeve or casing. Furthermore, ductile iron pipes may need protection against soil conditions that could potentially cause pipe movement or shifting. In areas with unstable soil, additional measures such as proper bedding and backfilling techniques, as well as the use of anchoring devices, may be necessary to ensure the stability and integrity of the pipes. In summary, while ductile iron pipes are robust, they still require additional protection against external factors. This can include corrosion protection, physical damage prevention, and measures to address soil conditions. By implementing these protective measures, the lifespan and performance of ductile iron pipes can be significantly extended, ensuring the reliable conveyance of water and other fluids.

Q:What are the different methods for tapping ductile iron pipe?: Tapping ductile iron pipe can be done in several different ways, depending on the project's specific needs. Some commonly used methods include: 1. Mechanical Tapping: To create a hole in the ductile iron pipe, a mechanical tapping machine is employed. Equipped with a rotating cutting tool, the machine easily cuts through the pipe wall, resulting in a clean hole. This method is ideal for smaller diameter pipes and is both quick and efficient. 2. Hot Tapping: While the ductile iron pipe is still in service and under pressure, hot tapping involves creating a hole. To ensure safety and maintain the pipe's integrity, specialized equipment and expertise are required. Hot tapping is commonly used when shutting down the pipeline for maintenance or repair work is impractical or not feasible. 3. Electrofusion Tapping: For larger diameter pipes, electrofusion tapping is a suitable method. It involves using an electrofusion saddle and fitting to create a branch connection on the ductile iron pipe. By welding a fitting onto the pipe with an electrofusion machine, a secure and leak-proof connection is achieved. This method can be used for both water and gas applications. 4. Saddle Tapping: A cost-effective and simple method for smaller diameter pipes is saddle tapping. It involves attaching a saddle or clamp onto the ductile iron pipe and drilling a hole through it. The saddle is then equipped with a threaded outlet to connect a branch line. 5. Split Sleeve Tapping: For larger diameter pipes, split sleeve tapping is commonly used. This method requires cutting a section out of the ductile iron pipe and installing a split sleeve over the cut. By bolting the split sleeve together, a secure and watertight connection is established. It is suitable for both water and gas applications. When selecting the tapping method, it is crucial to consider factors like pipe size, pressure rating, required branch connection, and project-specific requirements. Consulting a professional engineer or tapping specialist is highly recommended to ensure the correct method is used for tapping ductile iron pipe.

Q:What is the expected hoop stress capacity of ductile iron pipes?: The expected hoop stress capacity of ductile iron pipes can vary depending on various factors such as the pipe's diameter, wall thickness, and material grade. However, in general, ductile iron pipes have a high level of strength and durability, making them capable of withstanding significant hoop stress. Ductile iron pipes are designed and manufactured to meet specific standards and requirements, such as the American Water Works Association (AWWA) C151 and C115 standards. These standards ensure that the pipes have sufficient strength to handle the anticipated loads and pressures they may encounter during their service life. The hoop stress capacity of ductile iron pipes is primarily determined by their tensile strength. Ductile iron is a type of cast iron that has been treated to exhibit ductility, meaning it can withstand tensile stress without fracturing. This property makes it suitable for applications where the pipes may experience internal or external pressure, such as water distribution systems or sewer lines. To determine the expected hoop stress capacity, engineers typically perform calculations based on the specific pipe dimensions, material properties, and the expected operating conditions. These calculations consider factors such as the internal pressure, external loads, and the safety factors required by the applicable design standards. It is important to note that the expected hoop stress capacity of ductile iron pipes should always be verified using the manufacturer's specifications and engineering calculations. Additionally, any modifications or repairs to the pipes should be performed by qualified professionals in accordance with industry guidelines to ensure their continued strength and performance.

Q:Can ductile iron pipes be used for underground sewage systems?: Yes, ductile iron pipes can be used for underground sewage systems. Ductile iron is a type of cast iron that has enhanced flexibility and strength, making it suitable for various applications, including sewage systems. Ductile iron pipes offer several advantages for underground sewage systems. Firstly, they have excellent corrosion resistance, which is crucial in sewage systems where the presence of moisture and chemicals can cause corrosion over time. This resistance to corrosion ensures the long-term durability and reliability of the pipes. Secondly, ductile iron pipes have high tensile strength, allowing them to withstand the pressure and stress that can occur in underground sewage systems. They are resistant to ground movements, such as soil settling or shifting, which can cause damage to other types of pipes. Furthermore, ductile iron pipes have a smooth internal surface, which results in a better flow capacity and reduces the likelihood of clogging or blockages in the sewage system. This smooth surface also helps to minimize the accumulation of debris and sediment, reducing the need for frequent maintenance and cleaning. Another important factor is that ductile iron pipes are available in various sizes and can easily be connected using a range of joint systems, allowing for flexibility in designing and constructing underground sewage systems. In summary, ductile iron pipes are an excellent choice for underground sewage systems due to their corrosion resistance, high tensile strength, smooth internal surface, and ease of installation.

Q:Are ductile iron pipes resistant to acid mine drainage corrosion?: Generally, ductile iron pipes are resistant to corrosion caused by acid mine drainage (AMD). Ductile iron is a highly durable material that has been widely used in various industries, including mining and water distribution, because of its excellent ability to resist corrosion. AMD is a significant environmental issue that occurs when water comes into contact with sulfide minerals in mining areas, resulting in the formation of sulfuric acid. This acid can cause damage to various materials, including pipes, and can contaminate water sources. Ductile iron pipes have a protective layer made of cement mortar or epoxy coating, which acts as a barrier between the corrosive AMD and the pipe material. This protective layer prevents direct contact and reduces the likelihood of corrosion. Moreover, ductile iron pipes have a strong resistance to both internal and external corrosion, making them suitable for environments where AMD may be present. They have a proven track record of reliability and longevity, even in harsh conditions, ensuring the integrity of the water distribution system and minimizing the risk of leaks or failures. However, it's important to note that the resistance of ductile iron pipes to AMD corrosion can depend on other factors, such as the specific composition and concentration of the AMD, the duration of exposure, and the temperature. Therefore, it is recommended to seek advice from experts and conduct thorough material testing and analysis to determine the suitability of ductile iron pipes in specific AMD environments.

Q:How do we handle the leaking of the ductile iron pipe?: If it is installed in the pipeline, test pressure leakage, glue can be repaired and then welded, usually with hoop.

Q:What effect does magnesium play in nodular cast iron?: The role of magnesium as spheroidizing agent used in iron spheroidizing treatment, promote water ink is made of iron, carbon in liquid iron spherical graphite precipitation.

Q:What is the relationship between the installation direction of the ductile iron pipe and the direction of flow?: The ductile iron pipe is installed in the direction of the current.

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