DUCTILE IRON PIPE DN1200 c

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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: Can ductile iron pipes be used in areas with high soil acidity?: Ductile iron pipes can be used in areas with high soil acidity, but certain precautions should be taken to ensure their longevity and performance. Ductile iron pipes are known for their strength, durability, and resistance to corrosion, which makes them suitable for various soil conditions, including those with high acidity. However, high soil acidity can still pose a potential risk to ductile iron pipes over time. Acidic soils can accelerate the corrosion process, potentially leading to the degradation of the pipe material. To mitigate this risk, several measures can be implemented: 1. Protective Coatings: Applying protective coatings to the outer surface of the ductile iron pipes can provide an extra layer of defense against soil acidity. These coatings, such as epoxy or polyethylene, act as a barrier, preventing direct contact between the pipe and the corrosive soil. 2. pH Adjustment: Adjusting the pH levels of the soil can help reduce its acidity. This can be done by adding lime or other neutralizing agents to the soil, which will help create a more favorable environment for the ductile iron pipes. 3. Cathodic Protection: Implementing cathodic protection systems can be an effective method to prevent corrosion in ductile iron pipes. This technique involves the use of sacrificial anodes or impressed current systems to create a protective electrical current that counteracts the corrosive effects of the soil. 4. Regular Inspections: Periodic inspections should be conducted to monitor the condition of the ductile iron pipes in areas with high soil acidity. This allows for early detection of any corrosion or degradation, enabling timely repairs or replacements to be carried out. By implementing these measures, ductile iron pipes can be effectively used in areas with high soil acidity, ensuring their long-term performance and minimizing the risks associated with corrosive soils. However, it is always recommended to consult with experts or engineers familiar with local soil conditions and the specific requirements of the project to determine the most suitable materials and protective measures.

Q: How does ductile iron pipe perform in areas with high traffic loads?: Ductile iron pipe performs exceptionally well in areas with high traffic loads. Due to its superior strength and durability, it is highly capable of handling heavy loads and withstanding the impact caused by vehicular traffic. Ductile iron pipes have a high resistance to bending and cracking, making them ideal for applications in roadways, highways, and other high traffic areas. The high strength of ductile iron pipe allows it to distribute the weight and pressure exerted by heavy traffic loads more effectively, reducing the risk of deformation or failure. This makes it a reliable choice for transporting water, sewage, and other fluids in areas where heavy vehicles are commonly present. Additionally, ductile iron pipe has excellent corrosion resistance, which further enhances its performance in high traffic areas. It can withstand exposure to various environmental conditions, including moisture, chemicals, and abrasion, without compromising its structural integrity. This makes it a long-lasting and cost-effective solution, as it requires minimal maintenance and has a long service life. Furthermore, ductile iron pipe's smooth internal surface minimizes friction and allows for efficient flow of liquids, reducing energy consumption and maximizing the pipe's hydraulic capacity. This is particularly beneficial in areas with high traffic loads, where the demand for water or wastewater transportation is often greater. In summary, ductile iron pipe is a reliable and durable choice for areas with high traffic loads. Its strength, resistance to bending and cracking, corrosion resistance, and efficient flow characteristics make it an excellent option for transportation systems in roadways, highways, and other heavily trafficked areas.

Q: How are ductile iron pipes protected against interior corrosion?: Cement mortar lining is utilized to protect ductile iron pipes against interior corrosion. This process involves the application of a layer of cement mortar to the inner surface of the pipe. By acting as a protective barrier, the cement mortar prevents the corrosive elements in the water or fluid from directly contacting the iron material. To apply the cement mortar lining, the interior surface of the ductile iron pipe is initially prepared by removing any loose scale or debris. Next, a mixture of cement, sand, and water is prepared to create a paste-like consistency. Skilled workers can then manually apply this mixture to the interior surface of the pipe or use a spinning machine. Once the cement mortar lining is applied, it must cure for a specific period, typically around 24 hours. During this curing process, the cement mortar hardens and forms a dense protective layer on the pipe's inner surface. The cement mortar lining provides several advantages in safeguarding ductile iron pipes against corrosion. It creates a smooth and continuous surface that prevents direct contact between the water or fluid and the iron material, thus reducing the risk of corrosion. Additionally, the lining helps to minimize friction within the pipe, thereby enhancing flow efficiency. It is crucial to regularly inspect and maintain the cement mortar lining to ensure its effectiveness in preventing corrosion. Over time, the lining may develop cracks or deteriorate, compromising its protective properties. Therefore, periodic inspections are necessary to repair or replace the lining as required, ensuring the integrity of the ductile iron pipes and preventing interior corrosion.

Q: How do ductile iron pipes handle ground movement near rivers and lakes?: Ductile iron pipes are highly suitable for handling ground movement near rivers and lakes. Their inherent flexibility and durability make them resistant to ground instability. They can withstand minor shifts and settle with the movement without cracking or breaking. Additionally, their sturdy construction and high tensile strength allow them to adapt to changing soil conditions, ensuring the integrity and longevity of the pipeline system in these areas.

Q: What are the different corrosion protection options for ductile iron pipe?: To ensure the longevity and durability of ductile iron pipes, there are several options available for corrosion protection. These options are as follows: 1. Cement Mortar Lining: A layer of cement mortar is applied to the inner surface of the pipe, creating a barrier against corrosive elements in water or soil. This lining offers excellent corrosion resistance and can endure for many decades. 2. Polyethylene Encasement: The ductile iron pipe is wrapped with a layer of polyethylene material, which acts as a physical shield against external corrosive elements. This method is commonly employed in aggressive soil conditions and provides long-lasting protection. 3. Internal and External Coatings: Different types of coatings, such as epoxy, polyurethane, or fusion-bonded epoxy (FBE) coatings, can be applied to the inner and outer surfaces of the pipe to resist corrosion. These coatings form a barrier that prevents the pipe from corroding in the surrounding environment. 4. Cathodic Protection: An electrical current is utilized to safeguard the pipe from corrosion. Cathodic protection systems can be either galvanic (sacrificial anode) or impressed current systems. These systems control the flow of electrons, preventing the oxidation of the ductile iron pipe. 5. Zinc Coating: Also known as galvanizing, this method involves applying a layer of zinc to the surface of the ductile iron pipe. Zinc acts as a sacrificial anode, corroding instead of the iron pipe. Zinc coating is particularly effective in soil conditions with low resistivity, offering reliable corrosion protection. It is crucial to consider various factors such as the environment, water chemistry, soil conditions, and expected service life when choosing a corrosion protection option for ductile iron pipes. Consulting with corrosion protection specialists and engineers can assist in selecting the most suitable option for specific applications.

Q: What is the maximum temperature that ductile iron pipes can handle?: The maximum temperature that ductile iron pipes can handle depends on various factors such as the specific grade of ductile iron, the specific application, and the duration of exposure to elevated temperatures. Generally, ductile iron pipes have a maximum recommended operating temperature of around 400-450 degrees Fahrenheit (205-232 degrees Celsius). However, it is important to consult the manufacturer's specifications and guidelines for the specific product being used as different grades and manufacturers may have slightly different temperature limits. It is also crucial to consider the thermal expansion and contraction characteristics of ductile iron pipes to avoid any potential issues in high-temperature environments.

Q: What are the different types of joints available for ductile iron pipe?: There are three main types of joints available for ductile iron pipe: push-on joints, mechanical joints, and restrained joints. Push-on joints use a rubber gasket that is compressed to create a watertight seal. Mechanical joints consist of a gland and a follower that are connected with bolts and nuts to create a leak-proof joint. Restrained joints are designed to withstand internal pressure and external forces through the use of a key and gland system.

Q: What are the advantages of using ductile iron pipe over HDPE pipe?: Ductile iron pipe offers numerous benefits compared to HDPE pipe. Firstly, it is renowned for its exceptional strength and durability. With the ability to withstand higher pressure, it is less prone to leakage or bursting, making it an ideal choice for applications requiring high-pressure water or gas transmission, such as municipal water supply systems or industrial piping networks. Secondly, ductile iron pipe boasts an extended lifespan when compared to HDPE pipe. Its remarkable resistance to corrosion allows it to endure for decades, even in harsh environmental conditions. As a result, frequent replacements are minimized, leading to long-term cost savings. Furthermore, ductile iron pipe exhibits excellent fire resistance properties. It can endure high temperatures without compromising its structural integrity, making it a reliable option for applications where fire safety is a concern, such as fire hydrant systems or sprinkler systems. Additionally, ductile iron pipe is renowned for its superior flow characteristics. Its smooth inner surface reduces friction loss, facilitating efficient and consistent fluid flow. This attribute is particularly crucial in applications that necessitate maximum flow capacity, such as water distribution systems or wastewater treatment plants. Moreover, ductile iron pipe is highly recyclable, promoting environmental sustainability. It can be melted down and utilized to manufacture new pipes, thereby reducing its environmental impact. In conclusion, ductile iron pipe offers a multitude of advantages over HDPE pipe, including its exceptional strength and durability, prolonged lifespan, fire resistance, superior flow characteristics, and recyclability. These features establish ductile iron pipe as the preferred choice for various applications, particularly those that require high-pressure transmission, longevity, fire safety, efficient flow, and environmental sustainability.

Q: What is the process of fusion bonding for ductile iron pipes?: Ductile iron pipes are joined together through the fusion bonding process, which involves applying heat and pressure to create a strong and long-lasting bond. This technique is commonly used in the construction and installation of underground water, sewer, and gas pipelines. To start the fusion bonding process, the surfaces of the pipes are thoroughly cleaned and prepared. This includes removing any dirt, debris, or rust that could hinder proper bonding. Specialized tools and techniques, such as wire brushing or sandblasting, are often utilized to ensure a clean and smooth surface. Once the surfaces are prepared, the pipes are aligned and securely clamped together. A fusion bonding machine, also known as a fusion welder, is then employed to apply heat and pressure to the joint. The fusion bonding machine consists of heating elements positioned around the joint and a hydraulic system that applies the necessary pressure. The heating elements, typically powered by electricity or gas, are designed to reach high temperatures capable of melting the ductile iron material. As the heat is applied, the ductile iron surfaces soften and fuse together, creating a strong bond. The pressure from the fusion bonding machine ensures that the molten iron flows evenly and uniformly between the joint surfaces, resulting in a seamless connection. The duration of the fusion bonding process varies depending on the size and thickness of the pipes and the specific project requirements. Once the fusion bonding is complete, the joint is allowed to cool and solidify, forming a permanent and leak-proof connection. Fusion bonding offers numerous advantages for ductile iron pipes. It provides a reliable and durable joint that can withstand high pressure, temperature variations, and external loads. The seamless connection also minimizes the risk of leaks, which is particularly important for underground pipelines that transport water, sewage, or gas. Overall, fusion bonding is a widely utilized technique for joining ductile iron pipes, ensuring their structural integrity and longevity in various infrastructure projects.

Q: How are ductile iron pipes protected against stray current corrosion?: Ductile iron pipes are protected against stray current corrosion through the implementation of various preventive measures and protective coatings. Stray current corrosion occurs when an electric current passes through the pipe, leading to accelerated corrosion and potential damage. To prevent this, the following measures are typically adopted: 1. Electrical isolation: Ductile iron pipes are electrically isolated from other metallic structures using insulating materials, such as rubber gaskets or non-conductive coatings. This isolation prevents the flow of stray current through the pipe, minimizing the risk of corrosion. 2. Cathodic protection: Cathodic protection is a widely used technique to protect ductile iron pipes from stray current corrosion. It involves the installation of sacrificial anodes or impressed current systems near the pipe. These anodes or systems release a controlled electric current, which counteracts the stray current and ensures that the iron pipe remains cathodically protected. 3. Coatings: Ductile iron pipes are typically coated with protective layers to enhance their resistance against corrosion. One common coating is a fusion-bonded epoxy (FBE) coating, which provides a high level of protection against stray current corrosion. FBE coatings act as a barrier, preventing the electrical contact between the pipe and the surrounding environment. 4. Monitoring and maintenance: Regular monitoring and maintenance are essential to ensure the ongoing protection of ductile iron pipes against stray current corrosion. This involves inspecting the protective coatings for any damage or degradation and promptly repairing or replacing them as needed. Additionally, monitoring systems can be installed to detect and measure stray currents, allowing for timely intervention if necessary. By implementing these protection measures, ductile iron pipes can effectively guard against stray current corrosion, prolonging their lifespan and ensuring the integrity of the pipeline infrastructure.

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