DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN350

DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN350

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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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· 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 pipe be used for underground applications?: Yes, ductile iron pipe can be used for underground applications. Ductile iron pipe is known for its strength and durability, making it suitable for various underground applications such as water and sewage systems, gas pipelines, and irrigation systems. Its high resistance to corrosion and external loads makes it a reliable choice for underground installations where long-term performance and structural integrity are important factors. Additionally, ductile iron pipe's flexibility allows it to withstand ground movement and settle without cracking or breaking, making it a suitable option for areas prone to seismic activity.

Q:What is the expected roughness coefficient of ductile iron pipes?: The roughness coefficient of ductile iron pipes can differ based on different factors like pipe diameter, age, and condition, resulting in variations. However, typically, the roughness coefficient for ductile iron pipes falls within the range of 0.01-0.015 mm. This value signifies the average roughness of the pipe's internal surface and plays a crucial role in hydraulic calculations for establishing the flow characteristics and pressure losses within the pipe network. It is worth mentioning that these values are approximate and subject to change depending on specific pipe conditions and applications.

Q:Are ductile iron pipes suitable for installation in areas with high groundwater contamination and soil erosion?: Yes, ductile iron pipes are suitable for installation in areas with high groundwater contamination and soil erosion. Ductile iron pipes are known for their durability and resistance to corrosion, making them highly suitable for such conditions. Additionally, their ability to withstand external pressure and soil movement makes them a reliable choice in areas prone to soil erosion.

Q:How much is the manual installation fee of ductile iron pipes from 100 to 150 per metre?: Upstairs said 9 yuan per meter, about the same, if you use the special (ductile iron pipe installation tool) construction greatly saves the labor cost, very fast and convenient, can search, is a special tool for the new, I hope to help you.

Q:How are ductile iron pipes manufactured?: Ductile iron pipes are manufactured through a process called centrifugal casting. In this process, molten iron is poured into a spinning mold, which creates a centrifugal force. This force helps to distribute the molten iron evenly along the mold's inner surface, resulting in a dense and uniform pipe wall thickness. After cooling and solidification, the pipe is removed from the mold, tested for quality, and then coated with a protective layer to enhance its durability and resistance to corrosion.

Q:What are the different methods for tapping ductile iron pipe?: There are several methods for tapping ductile iron pipe, including hot tapping, mechanical tapping, and electrofusion tapping. Hot tapping involves drilling into the pipe while it is still in service and creating a connection without interrupting the flow. Mechanical tapping uses mechanical equipment to create a threaded or grooved connection on the pipe. Electrofusion tapping uses an electrofusion saddle to create a connection by fusing a fitting onto the pipe.

Q:Can ductile iron pipe be repaired if it gets damaged?: If ductile iron pipe sustains damage, it can indeed be repaired. The process of repair entails the removal of the damaged section and the subsequent substitution with a fresh section. Typically, a pipe cutter, a specialized tool, is utilized to achieve a seamless cut on both ends of the affected area. Once the damaged portion is extracted, a new section of ductile iron pipe is affixed securely by employing mechanical couplings or welding. To safeguard the pipe's integrity and functionality, it is crucial to adhere to the manufacturer's guidelines and industry standards during the repair procedure.

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 do ductile iron pipes handle water hammer in high-rise buildings?: Ductile iron pipes are known for their durability and strength, making them an excellent choice for handling water hammer in high-rise buildings. Water hammer is a common phenomenon that occurs when the flow of water in a pipe is suddenly stopped or changed direction, resulting in a pressure surge. This can cause significant stress on the pipes and potentially lead to damage or failure. Ductile iron pipes are designed to withstand high-pressure situations, making them highly resistant to water hammer. They have a high tensile strength and can handle the sudden changes in pressure without deforming or fracturing. This is particularly important in high-rise buildings where the water supply needs to be delivered to various floors with different pressures. Moreover, ductile iron pipes have excellent corrosion resistance properties, which further enhances their ability to handle water hammer. Corrosion can weaken pipes over time and make them more susceptible to failure during pressure surges. However, the corrosion resistance of ductile iron pipes ensures that they remain structurally sound even in high-pressure situations. Additionally, the flexibility of ductile iron pipes allows them to absorb and dissipate the energy generated by water hammer. This helps to minimize the impact on the overall system and reduce the potential for damage. The ability to absorb energy also helps to reduce noise and vibrations associated with water hammer, creating a more comfortable and efficient water supply system. In conclusion, ductile iron pipes are well-equipped to handle water hammer in high-rise buildings. Their strength, corrosion resistance, and flexibility make them a reliable choice for delivering water under varying pressures without compromising the integrity of the system.

Q:What are the different methods for repairing ductile iron pipe?: There are several methods available for repairing ductile iron pipes, depending on the extent and location of the damage. One common method is the use of repair clamps or couplings. These are designed to provide a temporary or permanent solution for leaks or cracks in the pipe. Repair clamps are typically made of stainless steel and are fitted around the damaged area, sealing it off and preventing further leakage. Another method is the use of epoxy lining or patching. This involves applying a specialized epoxy material to the inside of the pipe, which forms a protective barrier over the damaged area. This method is often used for smaller cracks or leaks and can provide a long-lasting solution. For more extensive damage, such as large cracks or fractures, the damaged section of the pipe may need to be cut out and replaced. This process typically involves excavating the area around the damaged pipe, removing the damaged section, and installing a new piece of ductile iron pipe. In some cases, trenchless repair methods may be used. This involves using advanced techniques such as pipe bursting or cured-in-place pipe lining to repair the pipe without the need for extensive excavation. These methods can be more cost-effective and less disruptive compared to traditional repair methods. It is important to note that the specific method chosen for repairing ductile iron pipes will depend on factors such as the extent of the damage, the location of the pipe, and the available resources and expertise. Consulting with a professional pipe repair service is recommended to determine the most suitable method for a specific repair situation.

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