DUCTILE IRON PIPES AND PIPE FITTINGS K8 CLASS DN250

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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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Ductile Iron Pipe On Sale Made In China DN100

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:Can ductile iron pipes be used in nuclear power plants?: Yes, ductile iron pipes can be used in certain applications within nuclear power plants. However, their use is limited to non-safety-related systems where they are not exposed to radioactive environments or high-pressure conditions. Safety-related systems within nuclear power plants typically require materials with higher resistance to radiation and pressure, such as stainless steel or other specialized alloys.

Q:What is the expected hydraulic efficiency of ductile iron pipes?: The expected hydraulic efficiency of ductile iron pipes is generally high, as they have a smooth interior surface that minimizes friction and allows for efficient flow of water or other fluids.

Q:How is ductile iron pipe protected against external corrosion?: Ductile iron pipe is protected against external corrosion through a variety of methods that ensure its durability and longevity. One common method is the application of protective coatings. The pipe is typically coated with a layer of zinc or asphaltic material, which acts as a barrier between the iron pipe and the surrounding environment. This coating helps to prevent direct contact between the pipe and corrosive elements such as soil, moisture, and chemicals, thereby reducing the risk of corrosion. Additionally, ductile iron pipes are often wrapped with a layer of polyethylene or polypropylene tape. This tape provides an extra layer of protection against external corrosion by serving as a physical barrier that shields the pipe from moisture and other potentially corrosive substances. The tape is applied with care to ensure complete coverage and adherence to the pipe's surface. Furthermore, cathodic protection is commonly employed to safeguard ductile iron pipes against external corrosion. This technique involves the installation of sacrificial anodes or impressed current systems near the pipe. These anodes generate a protective electrical current that counteracts the corrosion process, effectively inhibiting the deterioration of the pipe's surface. Lastly, proper installation practices play a crucial role in preventing external corrosion. It is essential to ensure that the pipe is buried at an appropriate depth, allowing for adequate soil coverage. This helps to minimize exposure to corrosive elements and maintain the integrity of the protective coatings. Additionally, proper backfilling techniques and the use of corrosion-resistant bedding materials can further enhance the pipe's resistance to external corrosion. In conclusion, ductile iron pipe is protected against external corrosion through a combination of protective coatings, tape wrapping, cathodic protection systems, and proper installation practices. These measures work together to provide a robust defense against the corrosive forces that the pipe may encounter, ensuring its longevity and reliability in various applications.

Q:Are there any alternatives to ductile iron pipe for water distribution?: Yes, there are several alternatives to ductile iron pipe for water distribution. Some common alternatives include PVC (Polyvinyl Chloride) pipes, HDPE (High-Density Polyethylene) pipes, and PEX (Cross-linked Polyethylene) pipes. Each of these alternatives has its own advantages and disadvantages in terms of cost, durability, ease of installation, and resistance to corrosion. The choice of alternative pipe material depends on factors such as the specific requirements of the water distribution system, budget constraints, and local regulations.

Q:Can ductile iron pipes be used for potable water systems?: Yes, ductile iron pipes can be used for potable water systems. Ductile iron is a type of iron that has been treated with magnesium to increase its strength and flexibility. These pipes are known for their durability, corrosion resistance, and ability to withstand high pressure. They are commonly used in water distribution systems, including for potable water supply. However, it is important to ensure that the ductile iron pipes used for potable water systems meet the necessary standards and regulations set by local authorities, such as NSF/ANSI 61 for drinking water system components. Regular maintenance and periodic testing are also essential to ensure the continued safety and quality of the potable water system.

Q:Can ductile iron pipe be used for water distribution systems in cold climates?: Yes, ductile iron pipe can be used for water distribution systems in cold climates. Ductile iron pipe is known for its strength and durability, making it suitable for various applications, including water distribution systems. It has excellent resistance to external loads, such as freezing temperatures, frost heaving, and ground movement, which are common in cold climates. Additionally, ductile iron pipe has a high tolerance for temperature fluctuations, making it reliable for water transportation even in extreme cold conditions. Its corrosion resistance properties also ensure the longevity and reliability of the pipe, even in harsh environments. Therefore, ductile iron pipe is a suitable choice for water distribution systems in cold climates.

Q:Are there any specific standards or regulations for ductile iron pipe?: Yes, there are specific standards and regulations for ductile iron pipe. The American Water Works Association (AWWA) has established standards such as AWWA C151 for ductile iron pipe, which outlines the minimum requirements for manufacturing, testing, and installation. Additionally, various countries and regions may have their own specific regulations and standards for ductile iron pipe to ensure its quality and performance in different applications.

Q:What are the different types of linings available for ductile iron pipe?: Ductile iron pipes offer various linings with distinct advantages and applications. 1. Cement mortar lining: The most commonly used lining for ductile iron pipes is cement mortar. It involves applying a layer of cement mortar to the pipe's interior surface. This lining excels in resisting corrosion and chemical attacks, making it suitable for potable water distribution, wastewater conveyance, and industrial pipelines. Additionally, it improves flow efficiency by reducing friction and turbulence within the pipe. 2. Polyethylene lining: Ductile iron pipes often utilize polyethylene linings when corrosion resistance is a primary concern. This lining consists of a layer of high-density polyethylene (HDPE), either extruded or sprayed onto the inner surface of the pipe. Polyethylene lining provides exceptional resistance to corrosion, abrasion, and chemical attacks, making it ideal for transporting aggressive fluids such as saltwater, chemicals, or industrial waste. 3. Polyurethane lining: For applications requiring protection against abrasive wear, polyurethane linings are commonly employed in ductile iron pipes. This lining is created by spraying or pouring a layer of polyurethane onto the inner surface of the pipe. Polyurethane lining offers excellent resistance to abrasion, impact, and chemical attacks. It is suitable for conveying abrasive slurries, mining applications, and other high-wear environments. 4. Epoxy lining: To safeguard against corrosion and chemical attacks, epoxy linings are applied to ductile iron pipes. This lining is typically formed by applying a layer of epoxy resin to the pipe's inner surface using centrifugal casting or electrostatic spraying. Epoxy lining demonstrates outstanding adhesion and corrosion resistance, making it suitable for various applications like potable water distribution, wastewater treatment, and industrial pipelines. 5. Zinc lining: Ductile iron pipes employ zinc linings to provide cathodic protection against corrosion. This lining involves applying a layer of zinc to the pipe's inner surface through hot-dip galvanizing or electroplating. Zinc lining acts as a sacrificial anode, corroding preferentially to the iron pipe and shielding it from corrosion. It is commonly used in highly corrosive environments like seawater or acidic soils. Ultimately, the selection of a lining for ductile iron pipes relies on the specific requirements of the application, including the transported fluid, desired corrosion resistance, and potential for abrasive wear. Seeking guidance from industry experts and considering factors like cost, longevity, and maintenance requirements aids in determining the most suitable lining option for a particular project.

Q:How does ductile iron pipe perform in areas with high traffic loads?: Ductile iron pipe performs exceptionally well in areas with high traffic loads. Its high strength and durability make it capable of withstanding heavy loads and traffic without any significant deformation or damage.

Q:Can ductile iron pipes be used for both water and sewage systems?: Yes, ductile iron pipes can be used for both water and sewage systems. Ductile iron pipes are known for their high strength and durability, making them suitable for a wide range of applications, including water supply and sewage systems. These pipes have a high resistance to corrosion, making them ideal for carrying both clean water and sewage. Additionally, ductile iron pipes have excellent mechanical properties, allowing them to withstand the high pressure and stress that can be present in water and sewage systems. Therefore, ductile iron pipes are a reliable and versatile choice for both water and sewage systems.

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