K Type Ductile Iron Pipe DN800 socket spigot pipe

K Type Ductile Iron Pipe DN800 socket spigot pipe

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 200 m.t

Supply Capability:: 30000 m.t/month

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Specification:

1) The standard of pipe: ISO2531:1998, EN545:2006，K9 K8

2) Effective length: 6m/5.7m

3) Inner cement line: Portland cement lineas per ISO4179

4) Zinc coating: at least 130g/m² as per ISO8179

5) Bitumen painting: at least 70μm as per ISO8179

6)With 102% quantity of NBR, SBR, or EPDM ring asper ISO4633

7) DN80-DN1200

8) Highstrength, lighter than grey iron, good corrosion resistance, no furring, smallflow resistance, easy fixing, long life tome about 100 yeas

9)Checked by automatic inspection equipment

10) 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

11) 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

12) T type mechanical joint

13) Packing: in bulk or container

PACKING: 1) Pipesare bundled together with the steel belt.

2) Wooden pieces are put between the pipes.

Q: Are ductile iron pipes resistant to alkali attacks?: Ductile cast iron, commonly used in ductile iron pipes, has demonstrated its remarkable resistance to alkali attacks. This is achieved through the inclusion of specific chemical compositions that provide exceptional corrosion resistance. Alkali attacks, which arise from the interaction between alkaline substances and metals or other materials, are effectively countered by the dense and protective oxide film present on both the inner and outer surfaces of ductile iron pipes. This oxide film forms naturally over time and possesses a composition and structure that offer excellent resistance to alkali attacks. Moreover, to further enhance their ability to withstand corrosion and chemical reactions, ductile iron pipes are frequently coated with various protective layers, such as epoxy or zinc. It should be emphasized that although ductile iron pipes exhibit a high resistance to alkali attacks, the severity and concentration of the alkali substances can still impact their overall performance. In extreme instances, where there are exceedingly high concentrations of alkali substances or prolonged exposure to aggressive alkaline environments, some damage may occur to the protective layers of the pipes. Nonetheless, within normal conditions and acceptable parameters, ductile iron pipes are widely regarded as possessing outstanding resistance to alkali attacks.

Q: How does ductile iron pipe perform in seismic areas?: Due to its inherent strength and flexibility, ductile iron pipe is highly effective in seismic areas. Seismic activity can cause significant ground movements and vibrations, but ductile iron pipes have shown great resilience in such conditions. The exceptional performance of ductile iron pipe in seismic areas can be attributed to its unique properties, such as its high tensile strength and ductility. These properties enable it to absorb the energy generated during seismic events. Its ability to flex and bend without breaking or fracturing makes it an ideal choice for earthquake-prone regions. Furthermore, ductile iron pipes are specifically designed and manufactured to withstand external forces and ground movements. They are often equipped with flexible joints that can accommodate ground shifts and maintain the integrity of the pipeline system. These joints effectively absorb lateral and angular movements, minimizing the risk of pipe failure. Moreover, ductile iron pipes have a long-standing history of successful performance in seismic areas. They have undergone extensive testing and have consistently met or exceeded industry standards for seismic resistance. This reliability is crucial in ensuring the safety and functionality of water and wastewater systems, even during seismic events. In conclusion, ductile iron pipe is a reliable and durable choice for pipelines in seismic areas. Its ability to withstand ground movements, its flexibility, and its proven track record make it an excellent option for ensuring the integrity and functionality of water and wastewater systems in regions prone to earthquakes.

Q: What are the different methods for tapping ductile iron pipe?: There are several different methods for tapping ductile iron pipe, depending on the specific requirements of the project. Some of the common methods used include: 1. Mechanical Tapping: This method involves using a mechanical tapping machine to create a hole in the ductile iron pipe. The machine is equipped with a cutting tool that rotates and cuts through the pipe wall, creating a clean hole. This method is commonly used for smaller diameter pipes and is relatively quick and efficient. 2. Hot Tapping: Hot tapping involves creating a hole in a pressurized ductile iron pipe while it is still in service. This method requires specialized equipment and expertise to ensure safety and maintain the integrity of the pipe. Hot tapping is commonly used when it is not feasible or practical to shut down the pipeline for maintenance or repair work. 3. Electrofusion Tapping: Electrofusion tapping is a method that uses an electrofusion saddle and fitting to create a branch connection on a ductile iron pipe. This method involves welding a fitting onto the pipe using an electrofusion machine, which creates a secure and leak-proof connection. Electrofusion tapping is commonly used for larger diameter pipes and is suitable for both water and gas applications. 4. Saddle Tapping: Saddle tapping involves attaching a saddle or clamp onto the ductile iron pipe and drilling a hole through the saddle into the pipe. The saddle is then equipped with a threaded outlet for connecting a branch line. This method is commonly used for smaller diameter pipes and is relatively simple and cost-effective. 5. Split Sleeve Tapping: Split sleeve tapping is a method that involves cutting a section out of the ductile iron pipe and installing a split sleeve over the cut. The split sleeve is then bolted together, creating a secure and watertight connection. This method is commonly used for larger diameter pipes and is suitable for both water and gas applications. It is important to note that the selection of the tapping method should be based on factors such as the pipe size, pressure rating, required branch connection, and the specific requirements of the project. Consulting with a professional engineer or tapping specialist is recommended to ensure the proper method is used for tapping ductile iron pipe.

Q: What is the expected internal lining material for ductile iron pipes?: Typically, the anticipated internal lining materials for ductile iron pipes are either cement mortar lining or polyethylene lining. Cement mortar lining serves as a protective layer on the inner surface of the ductile iron pipe, shielding it from corrosion and prolonging its lifespan. Conversely, polyethylene lining is a thermoplastic substance that possesses resistance against corrosion, abrasion, and chemicals, making it well-suited for situations involving aggressive substances or poor water quality. Depending on the project's specific requirements and conditions, both lining materials offer their own advantages and are commonly utilized within the industry.

Q: Luo what effect of ductile cast iron: It should be chromium, chromium is anti graphitization elements in ductile iron if the content for a long time, will hinder the graphitization of cast iron, the iron cementite microstructure (Fe3C) content increased, the chilling tendency of the cast iron increases, will make iron brittle, hard, affect the mechanical properties and processing properties of nodular cast iron.

Q: What is the expected external protection system for ductile iron pipes?: The expected external protection system for ductile iron pipes typically involves a combination of protective coatings and cathodic protection.

Q: Can ductile iron pipes be used for dam construction?: Yes, ductile iron pipes can be used for dam construction. Ductile iron pipes are known for their strength, durability, and corrosion resistance, making them suitable for a wide range of applications, including dam construction. These pipes can withstand high pressure, making them ideal for transferring water or other fluids within the dam structure. Additionally, their ability to withstand external loads and ground movement makes them a reliable choice for the construction of dams. Ductile iron pipes are also relatively easy to install and maintain, further adding to their suitability for dam construction projects.

Q: What is the expected hydraulic performance of ductile iron pipes?: Ductile iron pipes are known for their exceptional hydraulic performance, boasting a remarkably smooth inner surface that facilitates fluid flow, resulting in reduced friction losses and increased flow rates. With excellent resistance to corrosion and abrasion, these pipes demonstrate long-lasting efficacy in diverse water and wastewater applications. In addition, the high tensile strength of ductile iron pipes enables them to withstand substantial internal and external loads without any deformation or failure. Their versatility allows for usage in both above-ground and below-ground scenarios, encompassing water distribution systems, sewage and wastewater transport, industrial piping, and irrigation systems. Moreover, the flexibility and resilience of ductile iron pipes enable them to adapt to ground movement and settle without any risk of breakage. This attribute proves invaluable in areas with unstable soil conditions or seismic activity, making these pipes a dependable choice. Overall, the hydraulic performance of ductile iron pipes is characterized by efficient flow, minimal pressure losses, durability, and the capacity to withstand various external forces. These exceptional qualities establish them as a favored option for water infrastructure projects, ensuring reliable and efficient fluid transportation over a prolonged service life.

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: What is the expected pressure class for ductile iron pipes?: The expected pressure class for ductile iron pipes can vary depending on the specific application and the requirements of the project. However, generally speaking, ductile iron pipes are designed to handle high-pressure applications and are commonly available in pressure classes ranging from 150 psi (pounds per square inch) to 350 psi. These pressure classes indicate the maximum operating pressure that the pipe can withstand while maintaining its structural integrity. It is important to consult with industry standards and guidelines, as well as the project specifications, to determine the appropriate pressure class for ductile iron pipes in a given situation.

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