DUCTILE IRON PIPE DN300 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:Are ductile iron pipes suitable for power plant applications?: Ductile iron pipes are a suitable choice for power plant applications. Unlike traditional cast iron pipes, ductile iron pipes have improved strength, durability, and flexibility. These properties make them ideal for power plants, where they face high pressure, extreme temperatures, and corrosive environments. Power plants require a reliable and strong piping system to transport various fluids, including water, steam, and chemicals. Ductile iron pipes have a high tensile strength and can withstand high pressure, ensuring the safe and efficient flow of fluids within a power plant. They are particularly suitable for power generation applications that involve high-pressure steam. Moreover, ductile iron pipes have excellent corrosion resistance, which is crucial in power plants where many fluids are highly corrosive. The internal and external linings of these pipes protect them from corrosion, ensuring a longer service life and reducing maintenance costs. This corrosion resistance also makes them suitable for transporting chemicals and wastewater within a power plant. In addition, ductile iron pipes can withstand extreme temperatures. Power plants often operate at high temperatures, and ductile iron pipes can handle these conditions without compromising their structural integrity. They have a high melting point and can resist thermal expansion and contraction, making them a suitable choice for applications involving hot fluids and steam. Furthermore, ductile iron pipes are cost-effective compared to other commonly used materials in power plants, such as stainless steel or carbon steel. They offer a balance between performance and cost, making them an attractive choice for power plant applications. In conclusion, ductile iron pipes have the necessary characteristics to meet the demands of power plant applications. Their strength, durability, flexibility, corrosion resistance, and ability to withstand high pressures and extreme temperatures make them well-suited for such environments. Additionally, their cost-effectiveness makes them a practical choice for power plant piping systems.

Q:How do ductile iron pipes perform in extreme weather conditions?: Ductile iron pipes have excellent performance in extreme weather conditions. Their high tensile strength and flexibility allow them to withstand freezing temperatures, heavy snow loads, and extreme heat without cracking or breaking. Additionally, their corrosion-resistant properties make them highly durable and reliable in harsh weather environments, ensuring long-term performance and minimal maintenance requirements.

Q:Are ductile iron pipes suitable for irrigation systems?: Yes, ductile iron pipes are suitable for irrigation systems. Ductile iron pipes are known for their durability, strength, and resilience, making them an ideal choice for various applications, including irrigation systems. These pipes can withstand high water pressure and are resistant to corrosion, which is essential for ensuring the efficiency and longevity of an irrigation system. Additionally, ductile iron pipes have a smooth interior surface, minimizing friction and allowing for efficient water flow, ensuring that the irrigation system operates optimally. Moreover, ductile iron pipes have a long lifespan, reducing the need for frequent replacements and maintenance, making them a cost-effective option for irrigation systems. Overall, due to their durability, strength, corrosion resistance, and efficient water flow, ductile iron pipes are highly suitable for use in irrigation systems.

Q:What are the common methods for cutting ductile iron pipes?: There are several common methods for cutting ductile iron pipes, depending on the specific requirements and tools available. 1. Hand Saw: A hand saw with a carbide-tipped blade is commonly used for cutting smaller diameter ductile iron pipes. This method requires physical effort and may be time-consuming. 2. Reciprocating Saw: A reciprocating saw with a diamond or carbide abrasive blade is a more efficient option for cutting ductile iron pipes. This power tool allows for faster cutting and requires less physical effort. 3. Cut-Off Saw: A cut-off saw, also known as a chop saw or disc cutter, equipped with a diamond or abrasive blade is a popular method for cutting ductile iron pipes. This power tool provides precise and fast cuts, making it suitable for both small and large diameter pipes. 4. Band Saw: A band saw with a bi-metal or carbide-tipped blade is commonly used for cutting larger diameter ductile iron pipes. This method allows for clean and precise cuts, but it may require specialized equipment and expertise. 5. Grinding Wheel: In some cases, a grinding wheel with a diamond or abrasive disc can be used to cut ductile iron pipes. This method is suitable for smaller diameter pipes or when other cutting tools are not available. It is important to note that regardless of the method used, proper safety precautions should always be followed, including wearing appropriate protective gear and using clamps or vices to secure the pipe during cutting. Additionally, it is recommended to consult with professionals or manufacturers' guidelines for specific recommendations on cutting ductile iron pipes.

Q:Can ductile iron pipes be used for pressure reducing stations?: Ductile iron pipes are indeed capable of being utilized in pressure reducing stations. Renowned for their robustness and resilience, these pipes are well-suited for managing applications involving high pressure. Their exceptional resistance to corrosion allows them to endure the mechanical pressures and strains typically associated with pressure reducing stations. Moreover, the smooth interior surface of ductile iron pipes minimizes friction losses and contributes to maintaining a consistent and regulated pressure within the system. Consequently, it can be concluded that ductile iron pipes are a dependable and frequently employed material in pressure reducing stations.

Q:Are ductile iron pipes suitable for use in wastewater pumping stations?: Yes, ductile iron pipes are suitable for use in wastewater pumping stations. Ductile iron is a strong and durable material that can withstand the harsh conditions and corrosive nature of wastewater. It has excellent resistance to corrosion and can handle high-pressure environments, making it an ideal choice for transporting wastewater in pumping stations. Additionally, ductile iron pipes have a long lifespan and require minimal maintenance, reducing the overall cost of operation and ensuring reliable and efficient wastewater transportation.

Q:What are the typical joint sealing requirements for ductile iron pipes under pressure?: To ensure a secure connection without any leakage, ductile iron pipes under pressure typically require the use of gaskets and mechanical joints. Gaskets, commonly made of rubber or synthetic materials, are positioned between the pipe ends to establish a tight seal. These gaskets are designed to withstand the pressure of the fluid flow and prevent any leaks. They also provide flexibility to accommodate slight misalignment or pipe movement. Another commonly employed method for sealing ductile iron pipes is through mechanical joints, such as push-on joints or restrained joints. These joints securely hold the pipe ends together, eliminating the need for additional gaskets while providing a dependable seal. To guarantee effective joint sealing, proper installation techniques are crucial. This involves correctly aligning the pipes, appropriately tightening bolts or screws, and utilizing suitable lubricants or sealants. It's important to acknowledge that the specific joint sealing requirements for ductile iron pipes under pressure may differ based on the application, the type of fluid being transported, and the relevant industry standards or regulations. Therefore, consulting the manufacturer's guidelines and applicable codes is vital to determine the appropriate joint sealing requirements for a specific project.

Q:What are the disadvantages of using ductile iron pipes?: Using ductile iron pipes in various applications comes with several drawbacks. Firstly, these pipes tend to be more expensive compared to other types like PVC or HDPE, which can be problematic for projects with budget constraints. Secondly, their relatively heavy weight makes transportation and installation more labor-intensive and time-consuming. This increases overall project costs, especially when specialized equipment and skilled workers are required. Another disadvantage is their susceptibility to corrosion. Exposure to environmental factors, like soil conditions and water chemistry, can lead to rust and scale formation on the inner and outer surfaces of the pipe. This reduces the pipe's lifespan and potentially affects water quality. Furthermore, ductile iron pipes can crack or break under certain conditions, especially when subjected to heavy loads or significant ground movement. This necessitates costly repairs or replacements, causing additional expenses and disruptions to the water supply. Lastly, ductile iron pipes have relatively low resistance to impact and abrasion compared to other materials. This makes them more vulnerable to damage from external forces, such as construction activities or accidental impacts, resulting in increased maintenance and repair costs. In conclusion, while ductile iron pipes have advantages like high tensile strength and durability, it is crucial to consider these disadvantages before deciding to use them in a specific project.

Q:How do ductile iron pipes perform in sandy soil conditions?: Ductile iron pipes perform well in sandy soil conditions due to their inherent strength and durability. The material's high tensile strength allows it to withstand the pressure exerted by the surrounding soil, preventing pipe deformation and breakage. Additionally, the corrosion resistance of ductile iron ensures a longer lifespan, even in corrosive sandy soil environments.

Q:Is nodular cast iron pipe filled with Yau Ma Tei?: In many areas of our country, ductile iron pipe in the middle and small diameter to tube connected with the tube, the bearing type or flange interface method; ductile iron, angle limit must be allowed better seismic performance and sealing performance.

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