ductile iron pipeDN450 K8 SOCKET SPIGOT PIPE

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t

Supply Capability:: 30000 m.t/month

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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 is the weight of ductile iron pipes compared to other materials?: Ductile iron pipes are generally heavier than other commonly used materials such as PVC or HDPE pipes.

Q: How are ductile iron pipes repaired if they get damaged?: Ductile iron pipes are repaired in a few different ways depending on the extent of the damage. Here are some common methods for repairing ductile iron pipes: 1. Spot Repair: If the damage is minimal and localized, a spot repair can be carried out. This involves cutting out the damaged section of the pipe and replacing it with a new section. The new section is typically joined to the existing pipe using mechanical couplings or flanged connections. 2. Pipe Lining: In cases where the damage is more extensive but the pipe is still structurally sound, pipe lining can be used. This involves inserting a liner into the damaged pipe, which creates a new smooth surface. The liner can be made of various materials such as epoxy or cured-in-place pipe (CIPP). This method avoids the need for excavation and replacement of the entire pipe. 3. Pipe Bursting: For severely damaged or deteriorated pipes, pipe bursting may be the best option. This process involves pulling a new pipe through the existing damaged pipe, simultaneously fracturing the old pipe and replacing it with a new one. This method is typically used when the existing pipe is beyond repair and needs complete replacement. 4. Welding and Patching: In certain cases, small leaks or cracks in ductile iron pipes can be repaired by welding or patching. Welding involves melting and fusing the metal together to seal the damaged area. Patching, on the other hand, involves applying a specialized epoxy or composite material over the damaged section to create a watertight seal. It is important to note that the repair method used will depend on factors such as the extent of the damage, accessibility to the pipe, and the expertise of the repair crew. In all cases, proper assessment, planning, and execution are crucial to ensure a successful and long-lasting repair.

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: How does ductile iron pipe perform in areas with high soil stability?: Ductile iron pipe performs exceptionally well in areas with high soil stability. Its robust and durable nature allows it to withstand the pressures exerted by the stable soil, ensuring a reliable and long-lasting performance. Additionally, the flexibility of ductile iron allows it to accommodate ground movements and settlement without compromising its integrity. Overall, ductile iron pipe is a suitable choice for areas with high soil stability, providing efficient and dependable water distribution and sewerage systems.

Q: Are ductile iron pipes recyclable?: Indeed, it is true that ductile iron pipes possess recyclability. Ductile iron, which belongs to the cast iron family, showcases exceptional sturdiness and endurance, rendering it an ideal selection for a wide array of applications, encompassing water and sewage systems. Once these pipes surpass their lifespan, they can undergo recycling and repurposing. The recycling procedure involves the fusion of the ductile iron pipes, employing the molten metal to generate fresh pipes or alternative iron-based commodities. By recycling ductile iron pipes, not only do we contribute to the conservation of natural resources, but we also curtail the volume of waste that inundates landfills. Hence, ductile iron pipes are perceived as a sustainable and eco-friendly alternative for piping systems.

Q: What is the expected deflection of ductile iron pipes under load?: The expected deflection of ductile iron pipes under load can vary depending on several factors such as the diameter, wall thickness, material properties, and the magnitude and distribution of the load applied. Generally, ductile iron pipes have a relatively high resistance to deflection due to their inherent strength and durability. They are designed to withstand substantial loads and are often used in applications where high pressure and heavy loads are expected. To determine the expected deflection, engineers typically use structural analysis techniques such as finite element analysis or beam theory calculations. These methods take into account the specific geometry and material properties of the ductile iron pipe to predict its behavior under load. In practice, ductile iron pipes are designed with a certain maximum allowable deflection, which is usually specified by industry standards or local regulations. This maximum allowable deflection ensures that the pipe remains structurally sound and maintains its functionality. It is important to note that the expected deflection of ductile iron pipes can also be influenced by external factors such as soil conditions, installation methods, and changes in temperature. Therefore, proper installation techniques and adherence to industry guidelines are crucial to ensure the pipes perform as expected and meet the required deflection limits.

Q: Do ductile iron pipes require concrete encasement for support?: Yes, ductile iron pipes typically require concrete encasement for support. Concrete encasement provides additional stability and strength to the pipes, preventing them from shifting or collapsing under pressure. It helps distribute the load evenly along the length of the pipe and protects it from external forces such as soil movement or heavy vehicle traffic. Concrete encasement also helps to minimize the risk of damage due to corrosion or external impacts, ensuring the longevity and durability of the ductile iron pipes.

Q: What are the common causes of failure in ductile iron pipes?: There are several common causes of failure in ductile iron pipes. One major cause is corrosion. Over time, the exposure to water, soil, and other environmental factors can lead to the formation of rust and corrosion on the pipe's surface. This can weaken the structural integrity of the pipe and eventually lead to failure. Another common cause is improper installation or handling. If the pipes are not installed correctly or if they are mishandled during transportation or installation, it can result in cracks, fractures, or other physical damage. These defects can compromise the functionality of the pipe and contribute to its failure. Inadequate design is another factor that can lead to failure. If the pipe is not designed to withstand the anticipated loads, pressures, or environmental conditions, it can become susceptible to premature failure. The pipe's material properties, wall thickness, and diameter must be carefully considered during the design process to ensure it can handle the expected demands. Poor maintenance and lack of timely repairs can also contribute to failure. Regular inspections, maintenance, and prompt repairs are necessary to identify and address any issues before they escalate. Failure to do so can result in the gradual deterioration of the pipe, making it more prone to failure. Lastly, external factors such as soil movement, seismic activity, or excessive traffic loads can also cause failure in ductile iron pipes. These external forces can exert stress on the pipe, leading to cracks, fractures, or even complete failure. To prevent failure in ductile iron pipes, it is essential to employ proper corrosion protection techniques, follow correct installation procedures, ensure adequate design considerations, implement regular maintenance and repair programs, and account for external factors during the planning and installation process.

Q: Can ductile iron pipe be used for hydropower systems?: Yes, ductile iron pipe can be used for hydropower systems. Ductile iron pipes are known for their strength, durability, and high-pressure capabilities, making them suitable for transporting water in hydropower systems. Additionally, ductile iron pipes have excellent corrosion resistance, which is crucial for long-term use in water-based applications.