DUCTILE IRON PIPES AND PIPE FITTINGS K9 CLASS DN300

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 22 pc

Supply Capability:: 3000 pc/month

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Material : Ductile Cast Iron
Size Range : DN 80mm to DN 2000mm
Unit Effective Length : 6m or 5.7m
Manufacture Standard: ISO 2531:1998/ EN 545:2006/EN 598:2007
Annual capacity : 200,000 tons
Coating Exterior: Zinc 130g/m2 according to ISO 8179-1 and bitumen coating 70 microns.
Cement Interior: Portland Cement/ High Alumina Cement/ Sulphate Resisting Cement Lining according to ISO 4179
Special requirements on external coating and internal lining can be applied
We also provide accessories such as SBR/EPDM rubber gaskets, lubricant paste, pipe caps, PE sleeves, etc.

Additional Parts:

Each pipe is strictly inspected according to related standard to ensure permanently high performance.
Easy Installation at site and service free for life
Long Service Lifespan
Quotation will arrive you within 24hours once we get your inquiry.
We guarantee offering you a competitive price.
A copy of original inspection reports of pipes will be offered after shipment.
Photos of loading process will be sent to the customer after shipment effect.
We will follow-up the delivery progress after shipment effect and update to the customer on weekly basis.

Q: Why is the sound speed of nodular cast iron lowered after heat treatment?: After the heat treatment, the microstructure of the material changes, the graphite changes, eliminating the internal stress of molecules, thus slowing down the speed.

Q: How do ductile iron pipes handle ground settlement?: Ductile iron pipes have the ability to withstand ground settlement due to their flexibility and resilience. The inherent ductility of the material allows the pipes to absorb and distribute the stress caused by ground movement, minimizing the risk of damage or failure. Additionally, the joints of ductile iron pipes are designed to provide flexibility, allowing for slight movement and accommodating ground settlement without compromising the integrity of the pipeline system.

Q: Do ductile iron pipes require special handling during transportation?: Yes, ductile iron pipes do require special handling during transportation. Ductile iron pipes are known for their strength and durability, but they can be susceptible to damage if not handled properly. These pipes are heavy and can be quite large in size, so it is important to use appropriate lifting and handling equipment during transportation. Special care should be taken to avoid dropping or impacting the pipes, as this can lead to cracks or fractures. Additionally, pipes should be stored and transported in a way that prevents them from rolling or shifting, which could cause damage to the pipe coating or fittings. It is also recommended to protect the pipes from exposure to extreme temperatures or weather conditions during transportation. By following these guidelines and taking the necessary precautions, the risk of damage to ductile iron pipes during transportation can be minimized.

Q: Are ductile iron pipes resistant to microbiologically induced corrosion?: Generally, ductile iron pipes exhibit resistance to microbiologically induced corrosion (MIC). Ductile iron, a variant of cast iron, undergoes treatment involving the addition of magnesium to enhance its strength and flexibility. Consequently, this process forms a protective layer on the iron's surface, rendering it less prone to corrosion initiated by microorganisms. MIC arises when specific bacteria, fungi, or other microorganisms interact with the metal surface of pipes, producing corrosive byproducts. Nevertheless, ductile iron generally resists MIC due to the presence of the protective layer, which acts as a barrier, thus preventing direct contact between microorganisms and the metal surface. Furthermore, ductile iron pipes are often coated with cement mortar or other protective coatings, further bolstering their corrosion resistance. These linings supply an additional layer of defense against microorganisms, reducing the likelihood of MIC. Nevertheless, it is crucial to note that the extent of resistance to MIC can vary depending on the specific conditions and environment in which the pipes are installed. Factors such as water quality, temperature, and the presence of certain microorganisms can influence the susceptibility of ductile iron pipes to MIC. Consequently, it is imperative to consider these factors and implement appropriate measures to prevent MIC. This may include regularly monitoring water quality, maintaining the pipes properly, and employing corrosion inhibitors or biocides when necessary.

Q: Can ductile iron pipe be used for fire protection systems?: Yes, ductile iron pipe can be used for fire protection systems. Ductile iron pipe is known for its strength and durability, making it suitable for various applications, including fire protection systems. Its high tensile strength and resistance to cracking and breaking make it a reliable choice for transporting water and other fire suppression agents. Additionally, ductile iron pipe has excellent corrosion resistance properties, ensuring long-term performance and reliability in fire protection systems. Overall, ductile iron pipe is a suitable and commonly used material for fire protection systems due to its strength, durability, and corrosion resistance.

Q: Can ductile iron pipes be used in areas with high temperature variations?: Yes, ductile iron pipes can be used in areas with high temperature variations. Ductile iron has a high resistance to thermal expansion and contraction, making it suitable for withstanding temperature fluctuations without compromising its structural integrity or performance.

Q: Can ductile iron pipes be used for underground utilities?: Underground utilities can indeed utilize ductile iron pipes. Renowned for their robustness, strength, and ability to withstand external pressure, ductile iron pipes prove to be a fitting option for subterranean applications demanding remarkable load-bearing capacity, such as utility installations. Furthermore, these pipes exhibit resistance to corrosion, a crucial attribute for underground environments that subject the pipes to dampness and soil conditions. Moreover, ductile iron pipes surpass alternative materials in terms of service life, thereby reducing the necessity for frequent replacements and maintenance. Consequently, ductile iron pipes find widespread application in underground utilities, encompassing water distribution, sewage systems, and gas pipelines.

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: Can ductile iron pipe be used for agricultural irrigation systems?: Yes, ductile iron pipe can be used for agricultural irrigation systems. Ductile iron pipe is known for its strength, durability, and corrosion resistance, making it suitable for various applications including agricultural irrigation. It can withstand high pressure and provide a reliable and long-lasting solution for transporting water in irrigation systems. Additionally, ductile iron pipe is resistant to chemicals commonly found in water sources used for irrigation, ensuring the pipe's integrity and preventing degradation over time. Its flexibility allows for easy installation and maintenance, making it a practical choice for agricultural irrigation systems.

Q: How are ductile iron pipes protected against stray current corrosion?: Various preventive measures and protective coatings are employed to safeguard ductile iron pipes from stray current corrosion. Stray current corrosion arises when an electric current flows through the pipe, causing accelerated corrosion and potential harm. To prevent this, the following measures are generally utilized: 1. Electrical isolation: Ductile iron pipes are insulated from other metallic structures by means of insulating materials like rubber gaskets or non-conductive coatings. This insulation obstructs the passage of stray current through the pipe, thereby minimizing the risk of corrosion. 2. Cathodic protection: Cathodic protection is a widely employed technique to shield ductile iron pipes from stray current corrosion. It involves installing sacrificial anodes or impressed current systems near the pipe. These anodes or systems emit a controlled electric current that counters the stray current and guarantees the cathodic protection of the iron pipe. 3. Coatings: Ductile iron pipes are typically coated with protective layers to enhance their resistance against corrosion. A common coating is fusion-bonded epoxy (FBE), which offers a high level of protection against stray current corrosion. FBE coatings act as a barrier, preventing electrical contact between the pipe and the surrounding environment. 4. Monitoring and maintenance: Regular monitoring and maintenance are essential for ensuring the ongoing protection of ductile iron pipes against stray current corrosion. This entails inspecting the protective coatings for any damage or deterioration and promptly repairing or replacing them as required. Additionally, monitoring systems can be installed to detect and measure stray currents, allowing for timely intervention if necessary. By implementing these protection measures, ductile iron pipes can effectively ward off stray current corrosion, thereby prolonging their lifespan and ensuring the integrity of the pipeline infrastructure.

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