DUCTILE IRON PIPE DN500

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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: How do ductile iron pipes perform in high-temperature water applications?: Ductile iron pipes perform well in high-temperature water applications due to their inherent strength and durability. They can withstand the elevated temperatures without losing their structural integrity, making them an ideal choice for conveying hot water.

Q: What are the typical applications for ductile iron pipes?: Ductile iron pipes are commonly used in various applications due to their unique properties and advantages. Some of the typical applications for ductile iron pipes include: 1. Water Supply Systems: Ductile iron pipes are extensively used in water supply systems, including municipal water distribution networks, as they provide excellent resistance against corrosion and have high durability. They can withstand high pressure and offer long service life, making them ideal for transporting potable water. 2. Wastewater and Sewage Systems: Ductile iron pipes are also widely utilized in wastewater and sewage systems. They can handle the transportation of sewage and other wastewater effectively due to their strength and resistance to chemical corrosion. These pipes are commonly used in underground sewer lines, sewer force mains, and wastewater treatment plants. 3. Industrial Applications: Ductile iron pipes find applications in various industrial sectors. They are commonly used for transporting different types of fluids, such as chemicals, slurries, and abrasive substances. Their strength, toughness, and resistance to external loads make them suitable for industrial pipelines, including those in power plants, refineries, and mining operations. 4. Irrigation Systems: Ductile iron pipes are frequently employed in irrigation systems for agriculture, landscaping, and golf courses. These pipes can withstand high water pressure and provide a reliable solution for transporting water over long distances. Their corrosion resistance ensures water quality is maintained, and their durability reduces the need for frequent maintenance. 5. Fire Protection Systems: Ductile iron pipes are widely used in fire protection systems, including sprinkler systems and fire hydrants. Their strength and ability to withstand high pressure make them suitable for delivering water rapidly in case of fire emergencies. These pipes are also resistant to heat, making them a reliable choice for fire protection applications. In summary, ductile iron pipes are versatile and widely used in various applications, including water supply systems, wastewater and sewage systems, industrial pipelines, irrigation systems, and fire protection systems. Their durability, corrosion resistance, and ability to withstand high pressure make them a preferred choice for these applications.

Q: What is the difference between spheroidal graphite cast iron QT400-15 and QT400-15A? What does the A mean later?: This should be said in front of the material, and later add A, should refer to the grade

Q: How do ductile iron pipes handle heavy traffic loads?: Ductile iron pipes possess exceptional durability and have the ability to effortlessly withstand heavy traffic loads. This is primarily attributed to their remarkable strength and flexibility. The incorporation of graphite nodules in the composition of ductile iron allows for greater flexibility compared to traditional cast iron pipes. This enhanced flexibility empowers the pipes to endure substantial traffic loads, including the weight of vehicles traversing over them. Moreover, ductile iron pipes exhibit an elevated load-bearing capacity, enabling them to bear significant weights without experiencing any deformation or structural failure. Consequently, they are well-suited for deployment in areas characterized by heavy traffic, such as highways, bridges, and industrial sites. Furthermore, ductile iron pipes showcase exceptional resistance to external forces, such as vibrations and impacts. These pipes can effectively absorb and distribute these forces across the entire pipe network, thereby averting any potential damage and preserving the overall structural integrity. In conclusion, ductile iron pipes are explicitly engineered to manage the demands imposed by heavy traffic loads. Their strength, flexibility, and load-bearing capacity render them a dependable choice for infrastructure projects where durability and longevity are of utmost importance.

Q: The benefits of ductile iron castings: Nodular cast iron has developed rapidly to be second only to grey cast iron and widely used as cast iron material. The so-called "iron instead of steel", mainly refers to ductile iron

Q: What are the typical joint restraint requirements for ductile iron pipes under pressure?: In order to meet the joint restraint requirements for ductile iron pipes under pressure, there are two common options available: mechanical joint restraints and restrained joint systems. These restraints are essential to prevent separation or pulling apart of the pipes caused by internal pressure. A mechanical joint restraint, which is widely used, involves a series of bolts and clamps that securely hold the pipes together. These restraints are applied at each joint of the ductile iron pipes to ensure a tight and secure connection. By providing axial restraint, they prevent the pipes from separating along the pipe axis. Another option is the restrained joint system, which offers both axial and angular restraint. This system includes a specially designed joint that consists of a gasket, a restraining gland, and a series of bolts or wedges. The gasket ensures a watertight seal, while the restraining gland and bolts/wedges restrain the pipe joints, preventing separation under pressure. The specific requirements for joint restraints may vary depending on factors such as the pipe's diameter, wall thickness, and operating conditions. To determine the appropriate joint restraint system for a specific application, it is crucial to consult the manufacturer's guidelines and industry standards. Furthermore, proper installation and maintenance of the joint restraints are essential to ensure their effectiveness and longevity in restraining the pipes.

Q: What are the different types of thrust restraints for ductile iron pipe?: There are several different types of thrust restraints that can be used for ductile iron pipe installations. These thrust restraints are designed to prevent the pipe from moving or separating under the forces generated by internal pressure, external loads, or changes in temperature. 1. Thrust blocks: Thrust blocks are concrete structures that are typically installed at bends, tees, and other changes in direction in the pipeline. They are designed to resist the thrust forces by transferring them to the surrounding soil or foundation. 2. Mechanical restraints: Mechanical restraints, such as tie rods or harnesses, are used to restrain the pipe by exerting an external force on it. These restraints are typically made of steel and can be adjusted to accommodate changes in pipe length or alignment. 3. Pipe anchors: Pipe anchors are devices that are installed at specific intervals along the pipeline to provide resistance against axial movement. They are usually made of steel and are embedded into the surrounding soil or concrete to provide a secure anchor point for the pipe. 4. Thrust collars: Thrust collars are devices that are installed around the pipe to prevent it from moving or separating. They are typically made of steel and are placed at strategic locations along the pipeline to absorb the thrust forces. 5. Restrained joint systems: Restrained joint systems are specialized pipe joints that are designed to resist axial forces. These joints typically have additional features, such as keyways or wedges, that provide resistance against movement. It is important to select the appropriate type of thrust restraint based on the specific requirements of the ductile iron pipe installation. Factors such as the pipe diameter, operating pressure, soil conditions, and potential external loads should be considered when determining the most suitable thrust restraint system. Consulting with a qualified engineer or pipe manufacturer can help ensure the proper selection and installation of thrust restraints for ductile iron pipe.

Q: What is the expected hydraulic performance of ductile iron pipes?: The expected hydraulic performance of ductile iron pipes is generally excellent due to their smooth internal surface, which minimizes friction and pressure drop, allowing for efficient flow of water or other fluids. Additionally, their high strength and durability ensure long-term reliability and minimal leakage, making ductile iron pipes a preferred choice for water supply and drainage systems.

Q: Advantages and disadvantages of ductile iron pipes: Generally not used in high pressure pipe network (6MPa or more). Because the pipe is relatively bulky, the machine must be used when installing. When the water leak occurs after the test, all the pipes must be dug out, and the pipe can be hoisted to the height of the clamps. The clamps can be installed to prevent leakage.

Q: Do ductile iron pipes have inner enamel?: Internal enamel ductile iron pipe is yes, but now there is almost no market (except for special process requirements), in the civil construction market, new materials, new technologies, new technologies can be replaced, there are many.

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