DUCTILE IRON PIPE DN125 c class

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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:Can ductile iron pipes be used for marine applications?: Yes, ductile iron pipes can be used for marine applications. Ductile iron is known for its high strength and durability, making it suitable for various environments, including marine environments. It has excellent corrosion resistance properties, which enable it to withstand the harsh conditions of saltwater exposure. Additionally, ductile iron pipes have been used in marine applications such as wastewater treatment plants, desalination plants, and offshore platforms. However, it is important to consider proper coating and maintenance to enhance the longevity of ductile iron pipes in marine applications.

Q:Are ductile iron pipes suitable for mining applications?: Yes, ductile iron pipes are suitable for mining applications. Ductile iron is a type of cast iron that has been treated to enhance its strength, durability, and ductility. These pipes are known for their high tensile strength and resistance to corrosion, making them ideal for underground mining operations where they may be exposed to harsh conditions. One of the key advantages of ductile iron pipes in mining applications is their ability to withstand high pressure and heavy loads. They have excellent structural integrity and can resist both internal and external forces, ensuring reliable performance in demanding mining environments. Additionally, ductile iron pipes have a long service life and require minimal maintenance. They are highly resistant to abrasion, which is crucial in mining operations where abrasive materials like rocks, minerals, and ores are present. The smooth inner surface of these pipes also minimizes friction, allowing for efficient transportation of mining materials. Moreover, ductile iron pipes are cost-effective compared to alternative materials like steel or concrete. They have a lower upfront cost and require less frequent replacements, resulting in reduced long-term expenses for mining companies. In conclusion, ductile iron pipes are well-suited for mining applications due to their strength, durability, resistance to corrosion and abrasion, long service life, and cost-effectiveness. These pipes provide reliable and efficient transportation of mining materials, contributing to the overall efficiency and productivity of mining operations.

Q:What is the purpose of ductile iron pipes?: Ductile iron pipes serve the crucial function of establishing a dependable and sturdy infrastructure for fluid transportation, including water, sewage, and gas. In comparison to steel or PVC pipes, ductile iron pipes offer notable advantages. One primary objective lies in ensuring the secure and efficient distribution of water to communities. Ductile iron pipes are specifically designed to endure high pressures and endure the challenging conditions found underground, rendering them an excellent choice for water supply systems. With their extended lifespan and minimal maintenance requirements, the necessity for frequent repairs or replacements is greatly reduced. Another purpose involves the efficient conveyance of sewage and wastewater. Ductile iron pipes possess exceptional resistance to corrosion, guaranteeing their ability to withstand the corrosive properties of sewage and other waste materials. Additionally, their structural strength enables them to endure heavy loads and ground movements, making them well-suited for underground sewer systems. Ductile iron pipes are also employed for gas transportation. Their remarkable mechanical properties empower them to withstand applications involving high pressures, making them the ideal choice for gas distribution networks. Furthermore, their durability and resistance to external factors like soil movement or temperature changes establish them as a reliable option for gas transmission systems. In essence, the overarching purpose of ductile iron pipes is to provide a resilient and enduring solution for the safe and efficient transportation of fluids. By contributing to the development and maintenance of essential infrastructure systems, they effectively support the needs of our communities.

Q:How does ductile iron pipe perform in areas with high soil erosion?: Ductile iron pipe is known for its exceptional strength and durability, making it a reliable choice for areas with high soil erosion. Its unique composition, which includes graphite nodules, allows it to be both flexible and resistant to fractures or cracks, even in challenging environments. This makes ductile iron pipe highly capable of withstanding the impact of soil erosion. In areas with high soil erosion, the soil particles can scrape against the surface of the pipe, potentially causing abrasions or damage. However, ductile iron pipe's thick wall thickness and corrosion-resistant coating provide an effective barrier against these abrasive forces. This means that even in areas with significant soil erosion, ductile iron pipe can maintain its structural integrity and functionality. Moreover, ductile iron pipe's ability to resist corrosion further enhances its performance in areas with high soil erosion. Soil erosion often leads to an increased presence of moisture, which can accelerate the corrosion process of certain materials. However, ductile iron pipe's protective coating, typically made from zinc or epoxy, acts as a shield against corrosion, ensuring its long-term performance and reliability. In summary, ductile iron pipe demonstrates excellent performance in areas with high soil erosion due to its strength, flexibility, and resistance to fractures or cracks. Its thick wall thickness and corrosion-resistant coating make it highly durable against abrasive forces and corrosion, allowing it to withstand the challenges posed by soil erosion. As a result, ductile iron pipe is a dependable choice for infrastructure projects in such areas, providing long-lasting and efficient water and wastewater transportation systems.

Q:How are ductile iron pipes protected against external corrosion?: Ductile iron pipes are protected against external corrosion through a combination of manufacturing processes and external coatings. The first line of defense is the inherent corrosion resistance of ductile iron itself. The iron is treated with a special alloying element, typically magnesium, which forms a protective layer on the surface of the pipe. This layer acts as a barrier against corrosion and helps to extend the lifespan of the pipe. In addition to the corrosion-resistant properties of the iron, ductile iron pipes are also externally coated with protective materials. One common method is to apply a layer of asphaltic or bituminous coating to the pipe's surface. This coating acts as a barrier against moisture and corrosive substances in the soil, preventing them from coming into contact with the iron. It also provides a layer of insulation, reducing the likelihood of galvanic corrosion. Another method of external corrosion protection is the use of fusion-bonded epoxy (FBE) coatings. FBE is a thermosetting resin that is applied to the surface of the pipe and then heat-cured to form a strong and durable coating. This coating provides excellent resistance against corrosion, abrasion, and impact, making it a popular choice for ductile iron pipes in harsh environments. In some cases, additional protective measures such as cathodic protection systems may be employed. These systems use electric currents to counteract the corrosion process by supplying electrons to the pipe's surface. This helps to prevent corrosion from occurring, especially in areas where the coating may have been damaged or compromised. Regular maintenance and inspection are also crucial in ensuring the long-term protection of ductile iron pipes against external corrosion. This includes periodic cleaning, repair of any coating damages, and monitoring the integrity of the protective layers. Overall, the combination of the inherent corrosion resistance of ductile iron, external coatings, and maintenance practices ensures that ductile iron pipes are well-protected against external corrosion, allowing them to have a longer lifespan and deliver reliable performance in various applications.

Q:Can ductile iron pipes be used in contaminated soil conditions?: Yes, ductile iron pipes can be used in contaminated soil conditions. Ductile iron is known for its strength and durability, making it resistant to corrosion and damage from external factors such as soil contaminants. Additionally, ductile iron pipes have been successfully used in a variety of challenging environments, including contaminated soils, where they can provide reliable and long-lasting underground infrastructure for the transportation of water and other fluids.

Q:How are ductile iron pipes made?: The manufacturing of ductile iron pipes involves a specific process called centrifugal casting. In this process, molten iron is poured into a rotating mold, typically made of steel. The rotation of the mold creates centrifugal force, which evenly distributes the molten iron, resulting in high-quality pipes. To start the manufacturing process, a mixture of scrap iron, steel, and recycled material is melted at extremely high temperatures in a furnace. Once the molten iron reaches the desired temperature and consistency, it is ready to be cast into pipes. To prevent the molten iron from cooling too quickly, the rotating mold is preheated. This preheating also contributes to achieving a smooth surface finish on the pipes. The molten iron is then poured into the rotating mold through a central sprue. As the mold spins, centrifugal force forces the molten iron against the inner walls of the mold. This rapid solidification results in dense, strong, and corrosion-resistant pipes. The centrifugal force also helps remove impurities or slag from the inner surface of the pipe, further enhancing its quality. Once the casting process is complete, the mold is allowed to cool, and the pipe is removed. The pipes undergo various tests to ensure they meet the required quality standards. These tests include checking dimensions, mechanical properties, and surface finish. After passing the quality tests, ductile iron pipes are typically coated with a protective lining to prevent corrosion and extend their lifespan. The type of lining used, such as cement mortar, epoxy, or polyethylene, depends on the intended application of the pipes. In conclusion, the centrifugal casting process is utilized to manufacture ductile iron pipes. This process ensures the production of high-quality pipes that are strong, corrosion-resistant, and have a smooth surface finish.

Q:Nodular cast iron, heat treatment process and so on: The chill is estimated to be too low in carbon equivalent, poorly bred or cooled too quickly!

Q:Are ductile iron pipes suitable for potable water applications?: Ductile iron pipes are indeed suitable for potable water applications. Their reliability and durability have been demonstrated through their longstanding use in water distribution systems. These pipes exhibit a commendable resistance to corrosion, a crucial factor in upholding the quality of drinking water. Moreover, ductile iron pipes possess a high tensile strength, reducing the likelihood of breakage or leakage. Furthermore, their smooth interior surface aids in maintaining optimal water flow and preventing the accumulation of deposits or contaminants. In conclusion, ductile iron pipes are an appropriate selection for potable water applications due to their impressive strength, durability, and corrosion resistance.

Q:How are ductile iron pipes connected?: There are several methods commonly used to connect ductile iron pipes, including flanged joints, mechanical joints, and push-on joints. Flanged joints involve connecting two sections of pipe by using a flanged coupling. The pipe ends have flanges that are securely bolted together, creating a connection that is both strong and leak-proof. This method is often used for pipes with larger diameters or in situations where a rigid joint is necessary. Mechanical joints use a mechanical joint gland and rubber gasket to create a seal that is watertight. The ends of the pipes are inserted into the gland, and then bolts are tightened to compress the gasket, ensuring a reliable connection. This method is frequently employed in water distribution systems because it is flexible and easy to install. Push-on joints utilize a rubber gasket to create a tight seal between sections of pipe. The gasket is placed in a groove on one end of a pipe, and then the other pipe is pushed onto it, resulting in a compression seal. This method is quick and straightforward, making it suitable for a variety of applications, such as sewer systems and underground piping. Ultimately, the choice of connection method for ductile iron pipes depends on factors such as pipe diameter, application requirements, and installation conditions. It is of utmost importance to adhere to the manufacturer's recommendations and industry standards to ensure proper installation and dependable performance.

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