DUCTILE IRON PIPE DN1200

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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 pipe be used for directional drilling?: Indeed, it is possible to utilize ductile iron pipe for directional drilling. This method involves the installation of pipes, cables, and conduits beneath the ground in a curved or horizontal trajectory. Ductile iron pipes are renowned for their exceptional strength and flexibility, rendering them apt for this technique. They can be effortlessly bent and maneuvered while drilling, thereby enabling the installation of pipelines in demanding terrains and the traversing of obstacles such as rivers, highways, and buildings. Moreover, the corrosion resistance of ductile iron pipes is superb, thereby ensuring their durability and reliability for directional drilling endeavors.

Q: How are ductile iron pipes protected against freeze-thaw cycles?: Ductile iron pipes are protected against freeze-thaw cycles through several measures. Firstly, the material used in ductile iron pipes is inherently resistant to low temperatures and can withstand freezing conditions without becoming brittle or prone to cracking. Additionally, the pipes are often coated with a protective layer, such as cement mortar lining or polyethylene encasement, to provide an extra barrier against freeze-thaw damage. These coatings serve to insulate the pipe and prevent direct contact between the iron and the surrounding environment. Furthermore, ductile iron pipes are commonly designed with joints that allow for movement and flexibility, which helps to accommodate any expansion or contraction that may occur during freeze-thaw cycles. This flexibility reduces the risk of pipe breakage or damage due to the pressure exerted by freezing water inside the pipe. Moreover, proper installation practices, including adequate bedding and backfilling, are crucial in protecting ductile iron pipes against freeze-thaw cycles. Ensuring that the pipes are properly supported and surrounded by suitable materials helps to minimize the impact of freezing temperatures on the structural integrity of the pipes. Regular inspection and maintenance of ductile iron pipes are also essential in identifying any potential issues caused by freeze-thaw cycles. Periodic assessments can help detect any signs of damage or deterioration, enabling timely repairs or replacement to prevent further damage. In summary, ductile iron pipes are protected against freeze-thaw cycles through the inherent resistance of the material, protective coatings, flexible joints, proper installation practices, and regular maintenance. These measures collectively contribute to the durability and longevity of ductile iron pipes, even in cold weather conditions.

Q: Are ductile iron pipes resistant to biogenic sulfide corrosion?: Yes, ductile iron pipes are generally resistant to biogenic sulfide corrosion. Biogenic sulfide corrosion occurs when hydrogen sulfide gas, produced by the decay of organic matter, reacts with metallic surfaces. However, ductile iron pipes have a protective layer called the cement mortar lining that acts as a barrier against corrosive agents. This lining provides excellent resistance to the corrosive effects of biogenic sulfide, making ductile iron pipes a suitable choice for applications where this type of corrosion is a concern. Additionally, the high strength and durability of ductile iron pipes further contribute to their resistance against biogenic sulfide corrosion.

Q: What is the K9 standard pressure for ductile iron pipes?: Ductile weakness: ductile cast iron pipes connected by human factors such as the operation level of responsibility, influence, construction not convenient. The advantages of PE PE PE pipe has good corrosion resistance and its anti inorganic performance than that of the metal pipe is much stronger in the buried without corrosion, construction convenient. Small diameter PE pipe in the price performance ratio is better than that of steel and ductile iron.PE tube have disadvantages: benzene, gasoline, carbon tetrachloride and other organic solvents have certain effect on pe. If the organic solvent is infiltrated into the polyethylene, the swelling will occur, and its physical properties will be decreased. Its pressure resistance and temperature resistance are poor.

Q: How long does the cast iron pipe of indoor direct buried sewage need to be examined?: Indoor drainage of the majority of households are using cast iron pipe, if the distance from the sewage well is relatively close, and the above does not take the car, you can consider the U-PVC.

Q: How does ductile iron pipe perform in areas with high ground movement?: Ductile iron pipe performs exceptionally well in areas with high ground movement. Its unique properties and design make it highly resistant to deformation and damage caused by ground shifting, settling, or seismic activities. The ductility of the material allows it to withstand significant stress and strain without fracturing or breaking. Unlike rigid materials such as cast iron or PVC, ductile iron pipe has the ability to flex and absorb ground movement, which prevents catastrophic failures and ensures the integrity of the pipeline system. Additionally, ductile iron pipe is manufactured with a variety of joint configurations that further enhance its performance in areas with high ground movement. Flexible joints, such as restrained joints or mechanical joints, accommodate the movement by allowing limited rotation and translation, minimizing the potential for pipe separation or joint failure. Furthermore, the robust construction of ductile iron pipe, which includes a thick wall thickness and a high tensile strength, provides additional protection against ground movement. This strength helps the pipe withstand external loads and forces induced by the ground, preventing deformation and maintaining its structural integrity. In conclusion, ductile iron pipe is an ideal choice for areas with high ground movement due to its exceptional ductility, joint flexibility, and robust construction. Its ability to absorb ground movement without compromising the pipeline system's functionality or safety makes it a reliable and durable option in such challenging environments.

Q: What is the disadvantage of nodular cast iron in excess of silicon?: Silicon has a great influence on the performance of nodular cast iron. It mainly shows that silicon can refine graphite and improve the roundness of graphite ball.

Q: Can ductile iron pipes be used for underground cable conduits?: Ductile iron pipes are well-suited for underground cable conduits. They possess strength, durability, and corrosion resistance, making them suitable for a range of applications, including underground cable conduits. These pipes can handle heavy loads and safeguard cables against external elements. Furthermore, their long lifespan minimizes the need for frequent replacements and maintenance. Nonetheless, it is vital to consider factors like burial depth, soil conditions, and specific cable installation requirements when selecting ductile iron pipes for underground cable conduits.

Q: Which is good for water polo cast iron pipe steel pipe?: Flexible seamless steel pipe is good toughness, good processing, better than ductile iron corrosion resistance, the price is slightly higher;

Q: Can ductile iron pipe be used in corrosive environments?: Yes, ductile iron pipe can be used in corrosive environments. Ductile iron is known for its excellent corrosion resistance due to its protective oxide layer, making it suitable for various corrosive applications such as wastewater, chemical plants, and underground installations.

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