DUCTILE IRON PIPE DN80-DN1600

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Specification:

1) The standard of pipe: ISO2531:1998, K9

2) Effective length: 6m

3) Inner cement line: Portland cement line as per ISO4179

4) Zinc coating: at least 130g/m² as per ISO8179

5) Bitumen painting: at least 70um as per ISO8179

6) With 100% quantity of NBR ring, or SBR ring, or EPDM ring as per ISO4633

7) DN80mm-800mm

8) High strength, lighter than grey iron, good corrosion resistance, no furring, small flow resistance, easy fixing, long life tome about 100 yeas

9) Produced by Hangzhou chunfeng machine

10) Checked by automatic inspection equipment

11) Composition:

Chemical composition
Chemical composition	Ductile Cast Iron Pipe (%)	Grey iron pipe (%)	Steel pipe (%)
C	3.5-4.0	3.2-3.8	0.1-0.2
Si	1.9-2.6	1.4-2.2	0.15-0.4
Mn	0.15-0.45	0.4-0.6	0.3-0.6
P	≤0.06	≤0.3	0.02-0.03
S	≤0.02	≤0.1	0.02-0.03
Mg	0.03-0.06

12) Feature:

Mechanical properties
	Ductile Cast Iron Pipe	Grey Iron Pipe	Steel Pipe
Tensile Strength(Mpa)	≥420	150-260	≥400
Yield Strength(Mpa)	≥300	No Confirmation	No Confirmation
Bending Strength(Mpa)	≥590	200-360	≥400
Elongation (%)	≥10	Neglected	≥18
Brinell Hardness(HBS)	≤230	≤230	About 140

13) T type mechanical joint

14) Packing: in bulk or container

Q: The difference between flexible joint cast iron pipe and flexible anti-seismic cast iron pipe: Tracking the world's advanced technology comprehensive introduction pipe, steel pipe, cast iron pipe and other pipe fittings, practical production process, technical performance and quality requirements. Data detailed, authoritative concrete. Instructive and practical.

Q: Are ductile iron pipes suitable for road crossings?: Indeed, road crossings can indeed be suitably accommodated by ductile iron pipes. Given its robustness and durability, ductile iron proves to be exceedingly appropriate for subterranean installations, specifically road crossings. These pipes exhibit remarkable tensile strength, enabling them to endure substantial loads and traffic pressures without succumbing to fractures or breakages. Moreover, ductile iron pipes showcase exceptional resistance to corrosion, guaranteeing their durability even in the harshest of environments. Not to mention, their effortless installation and upkeep render them a dependable option for road crossings.

Q: Are ductile iron pipes suitable for gravity sewer systems?: Indeed, gravity sewer systems find suitability in the utilization of ductile iron pipes. Numerous properties possessed by ductile iron pipes render them highly compatible with this specific application. To commence, the high tensile strength of ductile iron pipes allows them to endure the weight exerted by the soil and other burdens imposed on them within a gravity sewer system. Consequently, these pipes can effectively resist deformation and maintain their structural integrity over an extended period. Moreover, the exceptional corrosion resistance exhibited by ductile iron pipes proves to be of utmost importance in sewer systems, which are frequently exposed to severe and corrosive surroundings. In this regard, the corrosion resistance of ductile iron pipes guarantees their long-term durability, thereby minimizing the necessity for maintenance and repairs. Additionally, the presence of a smooth internal surface in ductile iron pipes permits the efficient flow of wastewater within gravity sewer systems. A smooth surface reduces friction and prevents the accumulation of debris and sediment, thereby diminishing the likelihood of blockages and enhancing the overall performance of the system. Furthermore, the high resistance of ductile iron pipes to external forces, such as ground movements or heavy traffic, renders them highly dependable for gravity sewer systems where the pipes may encounter various external stresses. In conclusion, the amalgamation of properties encompassing high tensile strength, corrosion resistance, smooth internal surface, and resistance to external forces establishes ductile iron pipes as a suitable and reliable choice for gravity sewer systems.

Q: How do ductile iron pipes perform in high-altitude areas?: Due to their inherent strength and durability, ductile iron pipes are highly effective in high-altitude regions. The exceptional properties of ductile iron, such as its high tensile strength and impact resistance, make it ideal for withstanding the challenges presented by high-altitude environments. One significant advantage of ductile iron pipes is their ability to endure both internal and external pressures. In areas with varying water pressure, these pipes can withstand such fluctuations without compromising their structural integrity. This guarantees a consistent and uninterrupted flow of water, eliminating the risk of pipe failures or leaks. Furthermore, ductile iron pipes possess excellent resistance against corrosion, which is crucial in high-altitude areas with unpredictable and harsh atmospheric conditions. The protective lining and external coatings of these pipes provide an additional layer of defense, ensuring their durability and reducing the need for frequent maintenance or replacements. Additionally, ductile iron pipes have a higher tolerance for temperature variations compared to other materials. In high-altitude regions where temperature fluctuations can be extreme, these pipes can withstand expansion and contraction without cracking or rupturing. This thermal stability is vital for maintaining the integrity of the pipeline system and preventing costly repairs. To summarize, ductile iron pipes are an ideal choice for high-altitude areas due to their strength, durability, resistance to pressure variations, corrosion resistance, and thermal stability. These properties make them a reliable option for water distribution systems in such environments, ensuring a continuous water supply without compromising safety or efficiency.

Q: How is ductile iron pipe tested for quality?: Ductile iron pipe is tested for quality through various methods, including visual inspection, hydrostatic pressure testing, and mechanical property testing. Visual inspection ensures that the pipe is free from any visible defects or imperfections. Hydrostatic pressure testing involves subjecting the pipe to water pressure that exceeds its maximum working pressure to check for any leaks or failures. Mechanical property testing assesses the pipe's strength, toughness, and other mechanical properties through tests such as tensile strength, yield strength, and elongation. These quality tests help ensure that ductile iron pipes meet the required standards and are suitable for their intended applications.

Q: What are the typical bedding and backfill requirements for ductile iron pipes?: To ensure the correct installation and long-term effectiveness of ductile iron pipes, it is important to adhere to the typical requirements for bedding and backfill. The bedding material should be a granular substance that provides support and evenly distributes the load on the pipe. Suitable materials include sand, gravel, or crushed stone. The bedding material should be placed uniformly and continuously along the bottom of the trench, with a minimum thickness of 6 inches. The width of the bedding layer should be at least 1.5 times the outer diameter of the pipe, or as specified by the pipe manufacturer. Once the bedding is in place, the remaining space around the pipe should be filled with backfill material. This material should also be granular and free from large stones, debris, or organic matter. It should be compacted in 6-inch increments using appropriate compaction equipment. The backfill should be evenly distributed around the pipe, ensuring there are no gaps or voids. Excessive compaction should be avoided to prevent damage or deformation of the pipe. The backfill material should extend at least 12 inches above the top of the pipe. In addition to following the bedding and backfill requirements, it is crucial to adhere to any specific guidelines provided by the pipe manufacturer. These guidelines may include recommendations for specific materials, compaction methods, or additional protective measures. Overall, proper bedding and backfilling of ductile iron pipes are essential for maintaining the structural integrity and preventing damage or failure. By following industry standards and manufacturer specifications, the pipes will perform effectively and last for a long time in various applications.

Q: How do ductile iron pipes handle internal scale buildup?: Ductile iron pipes are known for their excellent resistance to internal scale buildup. The material used in ductile iron pipes is highly resistant to corrosion, which helps prevent the formation of scale deposits. Additionally, the smooth internal surface of these pipes minimizes the chances of scale adherence. In the rare event that scale does start to form, ductile iron pipes handle it quite well. The inherent strength and durability of ductile iron allow it to withstand the pressure exerted by the scale buildup. The pipes can continue to function efficiently even with some internal scaling, ensuring a reliable water flow. However, it is important to note that regular maintenance and periodic cleaning are still necessary to prevent excessive scale accumulation and ensure optimal pipe performance. This can be done through various methods such as mechanical cleaning, chemical treatments, or high-pressure water jetting. Proper maintenance practices can help prolong the lifespan of ductile iron pipes and minimize any potential issues related to internal scale buildup.

Q: How is ductile iron pipe protected against external corrosion?: To ensure the durability and longevity of ductile iron pipe, various methods are employed to protect it from external corrosion. One commonly used method is the application of protective coatings. Typically, a layer of zinc or asphaltic material is applied to the pipe, creating a barrier between the iron and the surrounding environment. This coating prevents direct contact between the pipe and corrosive elements like soil, moisture, and chemicals, thereby reducing the risk of corrosion. Another layer of protection is provided by wrapping the ductile iron pipe with polyethylene or polypropylene tape. This tape acts as a physical barrier, shielding the pipe from moisture and other potentially corrosive substances. Great care is taken during the application process to ensure complete coverage and adherence to the pipe's surface. Cathodic protection is also commonly used to safeguard ductile iron pipes from external corrosion. This technique involves installing sacrificial anodes or impressed current systems near the pipe. These anodes generate a protective electrical current that counteracts the corrosion process, effectively inhibiting the deterioration of the pipe's surface. Proper installation practices also play a crucial role in preventing external corrosion. It is important to bury the pipe at an appropriate depth, ensuring adequate soil coverage. This minimizes exposure to corrosive elements and maintains the integrity of the protective coatings. Additionally, using corrosion-resistant bedding materials and employing proper backfilling techniques can further enhance the pipe's resistance to external corrosion. In conclusion, a combination of protective coatings, tape wrapping, cathodic protection systems, and proper installation practices ensures the protection of ductile iron pipe against external corrosion. These measures work together to provide a strong defense against corrosive forces, ensuring the pipe's reliability and longevity in various applications.

Q: How much is the installation cost of the ductile iron tube?: From the hydraulic performance, because ductile pipe specifications generally refers to the inner diameter of PE pipe diameter specifications generally refers to the same specifications, because under the condition of ductile pipe can achieve greater runoff; from the installation and maintenance cost, ductile pipe have more favorable price. The inner wall of zinc spray, anti-corrosion materials such as cement mortar.

Q: How are ductile iron pipes protected from external damage?: Ductile iron pipes are protected from external damage through the application of protective coatings. These coatings act as a barrier, shielding the pipes from corrosion and other forms of external damage. Additionally, the pipes may be encased in concrete or installed in a casing pipe to provide further protection against external forces and impacts.

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