DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN500

DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN500

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 23 pc

Supply Capability:: 3000 pc/month

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Duct Iron Pipe DI Pipe ISO 2531 DN 80-300mm

· 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: What is the cost of ductile iron pipes compared to other pipe materials?: The price of ductile iron pipes can vary depending on a variety of factors, including size, length, and supplier. However, when compared to materials like PVC or steel, ductile iron pipes generally tend to be more expensive. This is primarily due to the manufacturing process and the inherent qualities of ductile iron that make it a durable and dependable choice for various applications. Ductile iron pipes are renowned for their high tensile strength, resistance to corrosion, and durability. These qualities make them suitable for transporting potable water, wastewater, and other fluids under high pressure. The production process for ductile iron involves the addition of magnesium to cast iron, resulting in improved strength and flexibility. This additional step, combined with the quality of the material, contributes to the higher cost. On the other hand, pipes made from materials such as PVC or steel can be less costly. PVC pipes are lightweight, easy to install, and relatively inexpensive, making them a popular choice for low-pressure applications like irrigation or drainage systems. Steel pipes, known for their strength and durability, are often used in high-pressure situations but come with a higher price tag than PVC. In the end, while ductile iron pipes may have a higher initial cost, their longer lifespan and reliability can make up for the investment over time. Other factors, such as project requirements, local regulations, and material availability, can also impact the overall cost comparison between ductile iron pipes and other pipe materials.

Q: What are the recommended bedding and backfill materials for ductile iron pipe?: To ensure proper alignment and prevent damage during installation and operation, ductile iron pipe requires a combination of granular materials such as sand, gravel, or crushed stone for bedding and backfill. Bedding involves using sand to create a level surface, distributing the load evenly and reducing stress concentration. As for backfill, it should be carefully selected to offer good compaction and drainage properties, preventing settling and potential damage. Common choices for backfill are crushed stone or gravel, which provide stability and allow for proper compaction. To ensure the long-term performance and durability of the pipe system, it is crucial to adhere to the recommendations of the pipe manufacturer and relevant industry standards when selecting bedding and backfill materials. These materials must meet specified size and quality requirements. Additionally, local regulations and soil conditions should also be considered when determining the appropriate bedding and backfill materials for ductile iron pipe installations.

Q: What are the different sizes of ductile iron pipes available?: Ductile iron pipes are available in a variety of sizes to cater to different applications and requirements. The sizes of ductile iron pipes typically range from 3 inches to 64 inches in diameter. These different sizes allow for flexibility and adaptability in various industries such as water supply, sewage systems, irrigation, and industrial piping. The smaller diameter ductile iron pipes, such as those in the range of 3 to 12 inches, are commonly used for residential and small-scale applications like household plumbing, fire hydrant systems, and small irrigation projects. These sizes are often found in urban areas and residential neighborhoods. For more extensive applications, larger diameter ductile iron pipes are utilized. They can range from 14 inches up to 64 inches in diameter. These larger pipes are predominantly used in municipal water supply systems, wastewater treatment plants, and industrial facilities where high-volume water flow is required. The availability of a wide range of sizes in ductile iron pipes ensures that they can accommodate various flow rates and pressure requirements. It allows engineers, contractors, and designers to select the appropriate size based on the specific needs of a particular project or application. It is essential to consult industry standards, local regulations, and engineering guidelines to determine the suitable size of ductile iron pipes for any specific project. This ensures that the pipes are capable of meeting the required performance standards and are suitable for the intended use.

Q: What is the difference between ductile iron and cast iron pipes?: Ductile iron and cast iron pipes are both popular materials used in plumbing systems, but they have distinct differences in terms of composition, strength, and flexibility. 1. Composition: Ductile iron pipes are made from ductile iron, which is a type of cast iron that has been treated with trace amounts of magnesium to enhance its flexibility and strength. On the other hand, cast iron pipes are made from regular cast iron, which is more brittle and less malleable. 2. Strength: Ductile iron pipes are significantly stronger than cast iron pipes. Ductile iron has a higher tensile strength, meaning it can withstand higher levels of internal and external pressure. This makes it more suitable for applications where high strength is required, such as water mains or sewer lines. Cast iron pipes, on the other hand, are more prone to cracking or breaking under pressure. 3. Flexibility: Ductile iron pipes have greater flexibility compared to cast iron pipes. This flexibility allows them to withstand ground movement, making them less susceptible to damage or breakage caused by settling or shifting soil. Cast iron pipes, due to their inherent brittleness, are more likely to crack or separate when exposed to ground movement or vibrations. 4. Installation: Ductile iron pipes are typically joined using a mechanical joint or flanged joint, which provides a secure and leak-proof connection. On the other hand, cast iron pipes are usually joined using a bell-and-spigot joint, which relies on gaskets or lead caulking to create a seal. The mechanical joint used in ductile iron pipes offers better resistance to movement and external forces. 5. Cost: Ductile iron pipes are generally more expensive than cast iron pipes. The additional treatment process and higher strength of ductile iron contribute to the increased cost. However, the added durability and longer lifespan of ductile iron pipes can offset the initial investment, as they may require fewer repairs or replacements over time. In summary, the main differences between ductile iron and cast iron pipes lie in their composition, strength, flexibility, installation methods, and cost. Ductile iron pipes offer superior strength and flexibility, making them more suitable for demanding applications, while cast iron pipes are more brittle and prone to breakage. Ultimately, the choice between the two depends on the specific requirements of the plumbing system and the available budget.

Q: Are ductile iron pipes available in different wall thicknesses?: Ductile iron pipes come in various wall thicknesses, catering to diverse requirements and applications. Manufacturers produce ductile iron pipes with different wall thicknesses, aligning them with specific needs. Determining the wall thickness of a ductile iron pipe involves considering factors such as diameter, internal pressure tolerance, and soil conditions for installation. Pipes with thicker walls are ideal for higher pressure situations or challenging soil conditions. Conversely, thinner-walled pipes may suffice for lower pressure scenarios. The availability of various wall thicknesses offers flexibility in selecting the most suitable ductile iron pipe for individual projects. This ensures efficient and secure transportation of fluids or gases through the pipes.

Q: How are ductile iron pipes made?: Ductile iron pipes are made through a process called centrifugal casting. In this method, molten iron is poured into a rapidly spinning mold, which forces the iron to evenly distribute along the walls of the mold. As the mold continues to spin, the iron cools and solidifies, forming a hollow cylindrical shape. This process allows the iron to retain its strength and flexibility, making it suitable for use in various piping applications.

Q: Are ductile iron pipes suitable for gravity flow applications?: Yes, ductile iron pipes are suitable for gravity flow applications. Ductile iron is a strong and durable material that can withstand the weight of the water and solid waste flowing through the pipes without any issues. It has high tensile strength and can resist damage from external forces such as soil movement or heavy traffic loads. Additionally, ductile iron pipes have smooth inner surfaces that promote efficient flow and minimize friction losses. They are also resistant to corrosion and can last for decades without requiring frequent maintenance or replacement. Overall, ductile iron pipes are a reliable choice for gravity flow applications due to their strength, durability, and resistance to various environmental factors.

Q: Ductile iron pipe connection mode: Jack painted on the outer surface and rubber lubricant: lubricant evenly installed ring inner surface, outer surface coating in the socket to socket socket parts lubricant line all the brush in the socket.

Q: What is the expected external protection system for ductile iron pipes?: The expected external protection system for ductile iron pipes typically includes a combination of coatings and cathodic protection. Coatings, such as fusion-bonded epoxy (FBE) or polyethylene, are applied to the external surface of the pipe to provide a barrier against corrosion and protect it from the surrounding environment. These coatings are highly resistant to moisture, chemicals, and abrasion, ensuring the longevity of the pipe. In addition to coatings, cathodic protection is often employed to further enhance the external protection of ductile iron pipes. Cathodic protection involves the use of sacrificial anodes or impressed current systems to create a protective electrical current that counteracts the corrosive effects on the pipe's surface. This technique helps prevent corrosion by ensuring that the ductile iron remains in a cathodic state, where it is less prone to degradation. The combination of coatings and cathodic protection provides a robust and comprehensive external protection system for ductile iron pipes. These measures effectively safeguard the pipes from corrosion, extending their service life and minimizing the need for costly repairs or replacements. Regular inspection and maintenance are also essential to ensure the ongoing effectiveness of the external protection system and to address any potential issues promptly.

Q: Can ductile iron pipes be used for underground fire protection systems?: Yes, ductile iron pipes can be used for underground fire protection systems. Ductile iron has excellent strength and durability, making it suitable for handling the high pressures and extreme conditions associated with fire protection systems. Additionally, it has good corrosion resistance, allowing the pipes to withstand exposure to moisture and other underground elements.

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