DUCTILE IRON PIPE C DN 450

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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: Are ductile iron pipes prone to external corrosion?: External corrosion is not typically a concern for ductile iron pipes. This is because the material itself has protective properties. Ductile iron pipes are composed of a durable and strong material with a significant amount of graphite. The graphite serves as a natural barrier against external corrosion, effectively preventing rust and oxidation. Furthermore, ductile iron pipes are often coated with a layer of protection, such as cement mortar or polyethylene, to further enhance their resistance to corrosion. These coatings provide an additional safeguard, preventing contact between the pipe and any corrosive substances in the environment. It is important to note, however, that localized corrosion may still occur under certain conditions. Factors such as soil composition, moisture levels, and the presence of specific chemicals can potentially lead to the corrosion of ductile iron pipes in specific areas. Therefore, regular inspections and proper maintenance are necessary to promptly identify and address any potential corrosion concerns. In conclusion, ductile iron pipes are generally highly resistant to external corrosion. Nonetheless, like any other material, they require appropriate care and maintenance to ensure their long-term durability and reliability.

Q: Does centrifugal cast iron pipe work well with lining cement? Will it scale and breed bacteria?: The situation in use abroad seems. It is considered that the corrosion of the inner wall of the centrifugal centrifugal ductile iron pipe and the rupture of the pipe are easy to occur when the content of chloride ion exceeds 5O0PPm in the pipe laying environment. This is mainly because, because the cement paste protection layer is the late spraying construction, it is not good to combine with the prefabricated core tube. It often causes water or moisture to seep in and causes oxidation and corrosion of the prestressing steel bars, resulting in fracture. The adhesive interface between cement mortar and centrifugally cast iron pipe is not reasonable. Because of the water absorption of cement, when the water enters the pipe, it is easy to destroy the interface and corroded the inner wall of the centrifugally cast iron pipe. Because it is a brittle material, it is easy to cause sudden accidents.

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: Are ductile iron pipes suitable for bridge piers or abutments?: Ductile iron pipes are indeed appropriate for bridge piers or abutments. This material, known for its strength and durability, is extensively utilized in diverse infrastructure undertakings, such as bridges. It possesses exceptional mechanical characteristics, including remarkable tensile strength and impact resistance, rendering it capable of withstanding substantial loads and external forces. Moreover, ductile iron pipes exhibit high resistance to corrosion and enjoy a lengthy service life, which is crucial for structures like bridge piers or abutments that face harsh environmental conditions. The adaptability and dependability of ductile iron pipes deem them a fitting choice for supporting and fortifying bridge structures, ensuring their safety and longevity.

Q: What are the typical bedding and backfill requirements for ductile iron pipes?: The typical bedding and backfill requirements for ductile iron pipes involve using a granular material, such as sand or gravel, to provide proper support and cushioning for the pipe. The bedding material should be placed evenly around the entire circumference of the pipe, ensuring that it is in direct contact with the bottom of the pipe and extending to a certain height above it. Backfill material, on the other hand, is used to fill the remaining space around the pipe and should be placed in layers and compacted to prevent settlement. Additionally, proper compaction and compaction equipment should be used to ensure the stability and long-term performance of the ductile iron pipes.

Q: Can ductile iron pipes be used for underground wastewater outfalls?: Ductile iron pipes are able to be utilized for underground wastewater outfalls. These pipes are favored for underground applications due to their robustness, sturdiness, and resistance to corrosion. They are specifically designed to endure high pressure and external loads, thereby making them suitable for the transportation of wastewater across long distances and depths. Moreover, ductile iron pipes possess a smooth internal surface, which aids in reducing friction and preventing the accumulation of sediments or debris that might obstruct the flow of wastewater. Consequently, ductile iron pipes are widely employed in underground wastewater systems, including outfalls, in order to ensure efficient and dependable wastewater conveyance while minimizing the likelihood of pipe failure or blockages.

Q: How much is the working pressure of ductile iron pipe used in water supply pipe and how is MPa determined?: Upstairs are positive solutions, but now outdoor buried water pipes are using steel wire mesh skeleton, plastic composite pipe instead of ductile iron pipeThe general pressure grades used for water supply pipes are 1.0MPa and 1.6Mpa

Q: Can ductile iron pipes be used for stormwater management?: Yes, ductile iron pipes can be used for stormwater management. Ductile iron is a strong and durable material that can withstand the pressure and load of stormwater. It is resistant to corrosion, making it suitable for long-term use in stormwater management systems. Additionally, ductile iron pipes have a smooth interior surface, facilitating a smooth flow of water and reducing the risk of blockages.

Q: Can ductile iron pipes be used for water treatment facilities?: Water treatment facilities can utilize ductile iron pipes. Ductile iron, a type of cast iron, boasts improved strength, flexibility, and durability. These characteristics render it suitable for a range of applications, including water treatment facilities. Ductile iron pipes exhibit exceptional resistance to corrosion, a crucial attribute for water treatment facilities where pipes come into contact with various chemicals and water contaminants. They can endure the demanding conditions and chemicals inherent in water treatment processes, ensuring a lengthy lifespan. Additionally, ductile iron pipes possess high tensile strength and can withstand elevated pressures. This makes them ideal for conveying water throughout the facility, encompassing the distribution system, pumping stations, and treatment units. They can handle the required flow rates and pressures without compromising pipe integrity. Furthermore, ductile iron pipes are renowned for their flexibility and resilience. They can tolerate ground movement and other external stresses, diminishing the likelihood of pipe failures and leaks. This proves invaluable in water treatment facilities where pipes frequently traverse diverse terrains and undergo regular maintenance activities. Moreover, ductile iron pipes offer cost-effective advantages over alternative pipe materials such as steel or PVC. They boast an extended lifespan, necessitate minimal maintenance, and exhibit low failure rates, thereby reducing overall operational and maintenance expenses for water treatment facilities. In conclusion, ductile iron pipes provide a dependable and durable solution for water treatment facilities. Their corrosion resistance, high tensile strength, flexibility, and cost-effectiveness render them a suitable choice for transporting water and chemicals within the facility, ensuring efficient and effective water treatment processes.