DUCTILE IRON PIPE DN1000 K9

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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: Are ductile iron pipes suitable for use in irrigation gate systems?: Yes, ductile iron pipes are suitable for use in irrigation gate systems. Ductile iron is known for its durability, strength, and corrosion resistance, making it an ideal choice for applications requiring reliable and long-lasting piping systems like irrigation gate systems. Additionally, ductile iron pipes have excellent flow characteristics, allowing for efficient water distribution in irrigation systems.

Q: Are ductile iron pipes suitable for use in acidic environments?: Highly acidic environments are generally unsuitable for the use of ductile iron pipes. While ductile iron is recognized for its strength and durability, it does have limitations in acidic conditions. Over time, acidic environments tend to corrode and deteriorate ductile iron pipes. Corrosion occurs when the acid in the environment reacts with the iron in the pipe, eventually leading to pipe failure. The rate at which corrosion occurs depends on several factors, including the concentration and type of acid, temperature, and duration of exposure. Acidic environments with pH levels below 4 or 5 can significantly accelerate the corrosion process. To address this limitation, alternative materials such as stainless steel or corrosion-resistant alloys like PVC or HDPE pipes are often recommended for use in acidic environments. These materials exhibit superior resistance to corrosion and can withstand the harsh conditions associated with acidic environments. However, it is worth noting that ductile iron pipes may still be suitable for use in mildly acidic conditions or if protective measures are implemented to prevent corrosion. The application of protective coatings or linings to the pipes can help minimize the corrosive effects of acids. Consulting experts or engineers who are knowledgeable about the specific conditions and requirements of the project is crucial in determining the most appropriate material for use in acidic environments.

Q: What is the expected thermal expansion of ductile iron pipes?: The expected thermal expansion of ductile iron pipes is typically around 0.006 inches per inch per degree Fahrenheit.

Q: How does ductile iron pipe perform in areas with high soil movement?: Ductile iron pipe performs well in areas with high soil movement due to its inherent flexibility and strength. Its ability to withstand soil settlement, ground shifting, and seismic activity makes it a reliable choice for underground pipelines. The pipe's ductility allows it to sustain deformation without fracturing, ensuring continued functionality even in challenging soil conditions. Consequently, ductile iron pipe is an ideal solution for areas prone to soil movement, providing long-lasting and durable performance.

Q: Can the underground cast iron pipes be connected with clamps to form buttress?: Best not to, because the use of clamp connection way to connect the poor integrity of the pipeline, the base treatment is not in place or uneven settlement, it is easy to produce deformation, resulting in pipe bending deformation, easily leaked from the junction.

Q: How does ductile iron pipe perform in corrosive environments?: The exceptional performance of ductile iron pipe in corrosive environments is widely recognized. Its resistance to corrosion has been thoroughly demonstrated, thanks to its distinctive composition and protective coatings. The presence of graphite nodules is the primary factor contributing to this resistance. These nodules serve as a barrier against corrosive agents, effectively inhibiting the spread of corrosion and providing a protective layer for the iron pipe. Furthermore, ductile iron pipes often undergo various external coatings and linings to further enhance their corrosion resistance. Coatings such as cement mortar lining or epoxy coatings are applied to create an additional protective layer. These coatings act as a barrier between the pipe and the surrounding environment, preventing corrosive substances from reaching the iron surface. In addition, ductile iron pipes are highly durable, which greatly enhances their performance in corrosive environments. They have a long life expectancy and can withstand high-pressure conditions, making them suitable for a wide range of applications. The inherent strength of ductile iron makes it less susceptible to damage, even in harsh environments. It is important to note that while ductile iron pipes exhibit excellent resistance to corrosion, the specific performance may vary depending on the nature and concentration of the corrosive substances present. In extremely aggressive environments, additional protective measures such as cathodic protection or sacrificial anodes may be necessary to ensure long-term durability. Overall, ductile iron pipe has a proven record of outstanding performance in corrosive environments. Its unique composition, combined with external coatings and linings, make it a dependable choice for applications where corrosion resistance is crucial.

Q: What is the weight of ductile iron pipes?: The size and wall thickness of ductile iron pipes can cause their weight to differ. Roughly, a 6-inch diameter ductile iron pipe with a length of 10 feet can weigh around 180 pounds. Nevertheless, it is crucial to acknowledge that weight variations may occur among manufacturers due to disparities in their manufacturing techniques and materials. To obtain precise weight information, it is advisable to refer to the product specifications or reach out to the manufacturer.

Q: How are ductile iron pipes connected or jointed together?: Ductile iron pipes are typically connected or jointed together using various methods such as flanged joints, push-on joints, mechanical joints, or restrained joints. These methods ensure a secure and leak-free connection between the pipes, providing a reliable and durable pipeline system.

Q: What are the advantages and disadvantages of spheroidal graphite cast iron?: As a substitute for steel, man developed ductile iron in 1949. The carbon content of cast steel is less than 0.3%, while that of cast iron and ductile iron is at least 3%. The low carbon content in cast steels makes the carbon free of graphite free of structural flakes. The natural form of carbon in cast iron is the form of free graphite flakes. In ductile iron, the graphite flakes change into tiny spheres by special treatment. The improved sphere makes ductile iron more superior in physical properties than cast iron or steel. It is the globular microstructure of this kind of carbon that makes ductile iron more ductile and impact resistant, while the thin form of cast iron causes the cast iron to be free of ductility. The best ductility can be obtained by ferrite matrix.

Q: How much is the installation cost of the ductile iron tube?: Water supply pipe is the first choice, with high cost performance. Compared with the PE pipe, from the installation time, ductile pipe PE pipe installation is simple and rapid, and after the installation of internal and external pressure bearing better tightness and corrosion resistance; from the point of view, ductile pipe sealing better after installation, but also can improve the corrosion resistance through various anti-corrosion methods;

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