DUCTILE IRON PIPE DN500 K8

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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: What are the differences between ductile cast iron pipes and centrifugal ductile iron pipes?: Centrifugal casting is a casting method. Ball milling cast iron pipe is a kind of material.

Q: What are the different types of coatings available for ductile iron pipe?: There are several different types of coatings available for ductile iron pipe, each with unique properties and advantages. 1. Cement Mortar Coating: This is a commonly used coating for ductile iron pipe. It involves applying a layer of cement mortar to the interior and exterior surfaces of the pipe. This coating provides protection against corrosion and abrasion, as well as improving the hydraulic efficiency of the pipe. 2. Polyethylene Encasement: Another popular coating for ductile iron pipe is polyethylene encasement. This involves wrapping the pipe with a layer of polyethylene material. This coating provides excellent corrosion resistance and is particularly effective in protecting against soil and water contaminants. 3. Fusion-Bonded Epoxy (FBE) Coating: FBE coating involves applying a layer of epoxy powder to the pipe surface, which is then heated to create a strong bond. This coating provides excellent corrosion resistance and is commonly used in aggressive environments such as wastewater treatment plants and chemical processing facilities. 4. Zinc Coating: Zinc coating, also known as galvanization, involves applying a layer of zinc to the surface of the ductile iron pipe. This coating provides excellent corrosion resistance and is often used in outdoor applications where the pipe is exposed to moisture and humidity. 5. Bituminous Coating: Bituminous coating is a black, tar-like substance that is applied to the surface of the pipe. It provides protection against corrosion and is commonly used in underground applications where the pipe is in contact with soil or water. 6. Polyurethane Coating: Polyurethane coatings provide excellent resistance to abrasion, impact, and chemical corrosion. They are often used in aggressive environments such as oil and gas pipelines. These are just a few examples of the different types of coatings available for ductile iron pipe. The choice of coating depends on factors such as the intended application, environmental conditions, and the level of corrosion protection required. It is important to consult with industry experts and adhere to relevant standards and specifications when selecting a coating for ductile iron pipe.

Q: What is the expected joint deflection capability of ductile iron pipes?: The expected joint deflection capability of ductile iron pipes is typically around 2 to 5 degrees per joint, allowing for flexibility and accommodating slight changes in alignment during installation and operation.

Q: Does centrifugal cast iron pipe work well with lining cement? Will it scale and breed bacteria?: Poor hydraulic performance and high energy consumption. The roughness coefficient of the prestressed reinforced concrete pipe is between 0.013 - 0.014, so that the pipeline resistance of the pipeline with the same pipe diameter is higher than that of the same water content. Because of its high roughness, after a period of use, the pipeline will be blocked by bacteria, shellfish breeding and reproduction. As the service life increases, the inner diameter of the pipe will gradually shrink and the resistance will increase.

Q: Can ductile iron pipes be used in areas with high levels of hydrogen sulfide gas?: Ductile iron pipes can generally be used in areas with high levels of hydrogen sulfide gas, but it is important to consider certain factors before making a decision. Hydrogen sulfide gas is corrosive and can potentially cause damage to metal pipes over time. While ductile iron is known for its durability and corrosion resistance, prolonged exposure to high levels of hydrogen sulfide gas can still lead to corrosion and deterioration. To mitigate the risks associated with hydrogen sulfide gas, it is advisable to assess the specific conditions of the area beforehand. This includes conducting a comprehensive analysis of the hydrogen sulfide gas concentration, pH levels, temperature, and other factors that may influence corrosion. Consulting with experts or engineering professionals who specialize in corrosion control can provide valuable insights and guidance. In some cases, additional measures may be necessary to protect ductile iron pipes. Coating the interior and exterior surfaces of the pipes with protective materials, such as epoxy or polyethylene, can provide an extra layer of defense against corrosion. Alternatively, cathodic protection systems can be employed to protect the pipes by applying a low voltage electrical current that mitigates the corrosion process. Ultimately, the decision to use ductile iron pipes in areas with high levels of hydrogen sulfide gas should be based on a thorough understanding of the specific conditions and implementing appropriate corrosion prevention measures. Regular monitoring and maintenance should also be conducted to ensure the pipes are functioning optimally and to address any potential issues before they escalate.

Q: What are the different methods for anchoring ductile iron pipe?: Depending on the specific application and requirements, there are various methods available for anchoring ductile iron pipe. One method involves the construction of concrete thrust blocks around the pipe at points where there are changes in direction or diameter. These blocks resist the thrust forces from the flowing water and prevent pipe movement. Another option is to install concrete collars or rings at regular intervals along the pipe. These collars provide additional support and prevent lateral movement. They are created by pouring concrete into a pre-made mold surrounding the pipe. Pipe clamps are metal brackets that can be attached to the pipe and anchored to a structure or support system. They come in different sizes and designs, allowing for flexible installation and adjustment as needed. Pipe restraints are specifically designed devices to restrict the movement of ductile iron pipe. Typically, they consist of a metal band or collar tightened around the pipe and attached to a concrete structure or anchoring system. The bell and spigot joint itself can serve as a means of anchoring the pipe. The bell end of one pipe fits over the spigot end of another, creating a tight connection that resists movement. Properly compacted soil surrounding the pipe can also provide some level of anchoring. The soil should be compacted in layers around the pipe to ensure stability and prevent movement. It is important to consider factors such as soil conditions, pipe diameter, operating pressure, and location when selecting the appropriate anchoring method. Consulting industry standards, guidelines, and a qualified engineer is crucial in determining the best anchoring method for a specific ductile iron pipe installation.

Q: What are the different sizes of ductile iron pipes available?: Ductile iron pipes are available in a variety of sizes to cater to different applications and requirements. The sizes of ductile iron pipes typically range from 3 inches to 64 inches in diameter. These different sizes allow for flexibility and adaptability in various industries such as water supply, sewage systems, irrigation, and industrial piping. The smaller diameter ductile iron pipes, such as those in the range of 3 to 12 inches, are commonly used for residential and small-scale applications like household plumbing, fire hydrant systems, and small irrigation projects. These sizes are often found in urban areas and residential neighborhoods. For more extensive applications, larger diameter ductile iron pipes are utilized. They can range from 14 inches up to 64 inches in diameter. These larger pipes are predominantly used in municipal water supply systems, wastewater treatment plants, and industrial facilities where high-volume water flow is required. The availability of a wide range of sizes in ductile iron pipes ensures that they can accommodate various flow rates and pressure requirements. It allows engineers, contractors, and designers to select the appropriate size based on the specific needs of a particular project or application. It is essential to consult industry standards, local regulations, and engineering guidelines to determine the suitable size of ductile iron pipes for any specific project. This ensures that the pipes are capable of meeting the required performance standards and are suitable for the intended use.

Q: How can stainless steel pipes and ductile iron pipes be joined?: The ductile iron pipe is connected to the ball milling cast iron pipe by spigot and socket

Q: What are the different sizes available for ductile iron pipes?: Ductile iron pipes are available in various sizes, typically ranging from 3 inches to 64 inches in diameter.

Q: Are there any specific standards or regulations for ductile iron pipe?: Ductile iron pipe is subject to specific standards and regulations. It is widely used in water and wastewater systems due to its strength and durability. The American Water Works Association (AWWA) C151 standard is the most well-known standard for ductile iron pipe. This standard outlines the minimum requirements for ductile iron pipe, including materials, dimensions, tolerances, and testing methods. It also provides guidance on the manufacturing, installation, and maintenance of ductile iron pipe systems. Apart from the AWWA C151 standard, there are other standards and regulations that govern the use of ductile iron pipe in different countries. In Europe, for instance, ductile iron pipe is regulated by the EN 545 and EN 598 standards. These standards specify the requirements for ductile iron pipes and fittings used in water supply and wastewater systems. Additionally, government agencies like the Environmental Protection Agency (EPA) in the United States may have specific regulations and guidelines for using ductile iron pipe in certain applications, such as drinking water systems. Manufacturers, contractors, and engineers involved in the design, installation, and maintenance of ductile iron pipe systems must ensure compliance with these standards and regulations. This is crucial to guarantee that ductile iron pipe is manufactured to the highest quality standards and that it is installed and maintained correctly, ensuring its durability and reliability in water and wastewater systems.

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