DUCTILE IRON PIPE DN350

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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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: Can ductile iron pipes be used for seawater intake systems?: Yes, ductile iron pipes can be used for seawater intake systems. Ductile iron is a type of cast iron that is known for its high strength, durability, and resistance to corrosion. These properties make it well-suited for various applications, including seawater intake systems. Seawater is highly corrosive due to its high salt content, and regular cast iron pipes may be susceptible to corrosion and damage over time. However, ductile iron pipes have a protective coating that acts as a barrier against corrosion, allowing them to withstand the harsh conditions of seawater. Additionally, ductile iron pipes have a higher tensile strength compared to regular cast iron pipes, making them more resistant to the high pressures and stresses associated with seawater intake systems. Overall, ductile iron pipes are a reliable and cost-effective choice for seawater intake systems.

Q: Are ductile iron pipes resistant to UV degradation?: UV degradation is not something that ductile iron pipes naturally resist. When they are exposed to sunlight, the UV radiation can cause degradation in various materials, including ductile iron. However, it is important to understand that the rate at which ductile iron pipes degrade due to UV radiation is relatively slow when compared to materials like plastics or rubber. To prevent UV degradation from negatively impacting ductile iron pipes, protective actions can be taken. These can include coating the pipes with a paint that is resistant to UV radiation or applying an external protective layer. By doing so, the impact of UV radiation can be minimized. Additionally, proper installation and maintenance practices can also contribute to the longevity and durability of ductile iron pipes. It is worth noting that while UV degradation may not be the main concern for ductile iron pipes, other factors like corrosion, chemical attack, or mechanical stress can still affect their performance and lifespan. Therefore, it is important to consider all potential environmental factors and take appropriate protective measures accordingly.

Q: Are ductile iron pipes suitable for bridge crossings or crossings under roadways?: Bridge crossings or crossings under roadways can be easily accommodated with ductile iron pipes. These pipes possess remarkable strength, durability, and resistance against external forces like heavy traffic loads and bridge movements. With their high tensile strength, they can endure the stress and strain caused by vehicles passing over them. Furthermore, ductile iron pipes exhibit exceptional corrosion resistance, rendering them suitable for underground installations that may come into contact with water or other corrosive elements. Additionally, their long lifespan and minimal maintenance requirements make them a dependable choice for bridge crossings or crossings under roadways. Consequently, ductile iron pipes offer a cost-effective and efficient solution for such infrastructure projects.

Q: Are ductile iron pipes suitable for fire protection systems?: Yes, ductile iron pipes are suitable for fire protection systems. Ductile iron is known for its strength, durability, and ability to withstand high pressure and heat, making it an ideal choice for fire protection systems. Additionally, ductile iron pipes have excellent corrosion resistance, which is crucial for ensuring the longevity and reliability of fire protection systems.

Q: How can the ductile iron pipe depress the elbow so as to prevent it from being opened?: The elbow is the pipe that changes the direction of the pipe. According to the angle, there are 45 degrees and 90 degrees, 180 degrees, three most commonly used, in addition, according to the project needs, including 60 degrees and other non normal angle elbow.

Q: What are the different lining thickness options for ductile iron pipe?: The different lining thickness options for ductile iron pipe typically range from 3 to 5 millimeters.

Q: How can the steel plastic composite pipe be connected with the cast iron pipe?: Use stainless steel clamps to connect.

Q: Do ductile iron pipes require pressure testing before installation?: Yes, ductile iron pipes typically require pressure testing before installation to ensure their integrity and ability to withstand the required pressure and flow conditions.

Q: What is the expected external protection system for ductile iron pipes?: The expected external protection system for ductile iron pipes typically includes a combination of coatings and cathodic protection. Coatings, such as fusion-bonded epoxy (FBE) or polyethylene, are applied to the external surface of the pipe to provide a barrier against corrosion and protect it from the surrounding environment. These coatings are highly resistant to moisture, chemicals, and abrasion, ensuring the longevity of the pipe. In addition to coatings, cathodic protection is often employed to further enhance the external protection of ductile iron pipes. Cathodic protection involves the use of sacrificial anodes or impressed current systems to create a protective electrical current that counteracts the corrosive effects on the pipe's surface. This technique helps prevent corrosion by ensuring that the ductile iron remains in a cathodic state, where it is less prone to degradation. The combination of coatings and cathodic protection provides a robust and comprehensive external protection system for ductile iron pipes. These measures effectively safeguard the pipes from corrosion, extending their service life and minimizing the need for costly repairs or replacements. Regular inspection and maintenance are also essential to ensure the ongoing effectiveness of the external protection system and to address any potential issues promptly.

Q: Are ductile iron pipes suitable for sewage treatment plants?: Yes, ductile iron pipes are suitable for sewage treatment plants. Ductile iron pipes are known for their durability, strength, and corrosion resistance, making them ideal for handling the corrosive and abrasive nature of sewage. They can withstand high pressure and are capable of accommodating heavy loads and ground movements, making them a reliable choice for sewage treatment facilities. Additionally, their smooth interior surface minimizes friction, reducing the risk of clogs and improving the flow of wastewater.

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