DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN1300

DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN1300

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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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Ductile Iron Pipes of China on Chip Price DN400 EN545/EN598/ISO2531

· 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: How are ductile iron pipes connected?: There are several methods commonly used to connect ductile iron pipes, including flanged joints, mechanical joints, and push-on joints. Flanged joints involve connecting two sections of pipe by using a flanged coupling. The pipe ends have flanges that are securely bolted together, creating a connection that is both strong and leak-proof. This method is often used for pipes with larger diameters or in situations where a rigid joint is necessary. Mechanical joints use a mechanical joint gland and rubber gasket to create a seal that is watertight. The ends of the pipes are inserted into the gland, and then bolts are tightened to compress the gasket, ensuring a reliable connection. This method is frequently employed in water distribution systems because it is flexible and easy to install. Push-on joints utilize a rubber gasket to create a tight seal between sections of pipe. The gasket is placed in a groove on one end of a pipe, and then the other pipe is pushed onto it, resulting in a compression seal. This method is quick and straightforward, making it suitable for a variety of applications, such as sewer systems and underground piping. Ultimately, the choice of connection method for ductile iron pipes depends on factors such as pipe diameter, application requirements, and installation conditions. It is of utmost importance to adhere to the manufacturer's recommendations and industry standards to ensure proper installation and dependable performance.

Q: How are ductile iron pipes protected against interior corrosion?: Cement mortar lining is utilized to protect ductile iron pipes against interior corrosion. This process involves the application of a layer of cement mortar to the inner surface of the pipe. By acting as a protective barrier, the cement mortar prevents the corrosive elements in the water or fluid from directly contacting the iron material. To apply the cement mortar lining, the interior surface of the ductile iron pipe is initially prepared by removing any loose scale or debris. Next, a mixture of cement, sand, and water is prepared to create a paste-like consistency. Skilled workers can then manually apply this mixture to the interior surface of the pipe or use a spinning machine. Once the cement mortar lining is applied, it must cure for a specific period, typically around 24 hours. During this curing process, the cement mortar hardens and forms a dense protective layer on the pipe's inner surface. The cement mortar lining provides several advantages in safeguarding ductile iron pipes against corrosion. It creates a smooth and continuous surface that prevents direct contact between the water or fluid and the iron material, thus reducing the risk of corrosion. Additionally, the lining helps to minimize friction within the pipe, thereby enhancing flow efficiency. It is crucial to regularly inspect and maintain the cement mortar lining to ensure its effectiveness in preventing corrosion. Over time, the lining may develop cracks or deteriorate, compromising its protective properties. Therefore, periodic inspections are necessary to repair or replace the lining as required, ensuring the integrity of the ductile iron pipes and preventing interior corrosion.

Q: What is the expected pressure rating of ductile iron pipes?: The expected pressure rating of ductile iron pipes can vary depending on various factors such as pipe diameter, wall thickness, and type of joint used for installation. However, generally speaking, ductile iron pipes are known for their high strength and durability, allowing them to withstand high pressure levels. In most cases, ductile iron pipes are designed and manufactured to meet or exceed the requirements of industry standards such as the American Water Works Association (AWWA) C151 or C115/A21.15. These standards specify the minimum pressure rating for ductile iron pipes, which typically range from 150 to 350 psi (pounds per square inch) for water transmission applications. It is important to note that the pressure rating also depends on the class of the pipe, which refers to the thickness of the pipe's wall. Typically, ductile iron pipes are available in different classes such as Class 50, Class 51, Class 52, etc. Each class has its own pressure rating, with higher classes offering greater strength and resistance to pressure. It is recommended to consult the manufacturer's specifications and guidelines for the specific ductile iron pipes being used to determine the exact pressure rating. It is also essential to consider other factors such as pipe support, installation methods, and operating conditions to ensure the safe and efficient operation of the ductile iron pipe system.

Q: Are ductile iron pipes suitable for irrigation canal systems?: Yes, ductile iron pipes are suitable for irrigation canal systems. Ductile iron pipes are known for their high strength and durability, making them ideal for withstanding the pressure and load requirements of irrigation canal systems. They have a high resistance to external loads, such as heavy machinery, and can handle the stress caused by soil movement and settlement. Additionally, ductile iron pipes are highly resistant to corrosion and provide a smooth inner surface, which minimizes friction and ensures efficient water flow. This is crucial for irrigation systems as it allows for the effective distribution of water to crops, ensuring optimal growth and yield. Ductile iron pipes also have a long service life, typically exceeding 100 years, which makes them a cost-effective option for irrigation canal systems. Their low maintenance requirements further contribute to their suitability for this application. Overall, ductile iron pipes offer the necessary strength, durability, corrosion resistance, and efficiency required for irrigation canal systems, making them a suitable choice for this purpose.

Q: Will nodular cast iron pipes rust?: Ductile iron pipe corrosion process is good, decided whether it will rust. Whether it will rust or not, the key is whether the anti-corrosion process of the nodular cast iron pipe is in place.

Q: Are ductile iron pipes suitable for gravity flow applications?: Yes, ductile iron pipes are suitable for gravity flow applications. Ductile iron pipes have high strength and durability, making them ideal for carrying fluids under gravity. They can withstand the pressure and weight of fluid flow without the need for additional support or reinforcement. Additionally, ductile iron pipes have excellent corrosion resistance, which ensures their long-term performance in gravity flow systems.

Q: What is the difference between flexible joint mechanism and seismic cast iron pipe DN100 and ductile iron pipe?: Nodular cast iron has high strength and strong plasticity. The tensile strength of ductile iron is twice that of gray iron, and the yield strength even exceeds that of cast steel.

Q: How are ductile iron pipes protected against stray electrical currents?: Ductile iron pipes are protected against stray electrical currents through the use of various measures such as applying coatings and linings on the pipes, utilizing cathodic protection systems, and implementing proper grounding techniques. These measures help to prevent corrosion and mitigate the impact of stray electrical currents on the ductile iron pipes, ensuring their long-term durability and functionality.

Q: Ductile iron and gray iron is what are the advantages and disadvantages of it: Comparison of ductile iron and cast iron (gray iron)Compared with cast iron, ductile iron has an absolute advantage in strength. The tensile strength of ductile iron is 60K, while the tensile strength of cast iron is only 31k. The yield strength of ductile iron is 40K, while the cast iron does not show yield strength, and eventually breaks. The strength to cost ratio of ductile iron is far superior to that of cast iron. Ductile iron is the same as cast iron in corrosion resistance.

Q: How do ductile iron pipes perform in high-pressure applications?: Ductile iron pipes perform exceptionally well in high-pressure applications. Due to their superior strength and durability, they can withstand the high-pressure conditions without any significant issues. The ductile iron material is known for its ability to handle high-pressure situations, ensuring the reliability and long-lasting performance of the pipes.

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