DUCTILE IRON PIPES AND PIPE FITTINGS c25 DN900

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t

Supply Capability:: 30000 m.t/month

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Ductile Iron Pipe On Sale Made In China DN350

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 are the common methods for cutting ductile iron pipes?: Some common methods for cutting ductile iron pipes include using a handheld reciprocating saw with a metal-cutting blade, using a portable bandsaw, using a chop saw with a diamond-tipped blade, and using a pipe cutter specifically designed for ductile iron pipes. Additionally, some professionals may also use oxy-fuel or plasma cutting methods for larger diameter pipes.

Q: How are ductile iron pipes restrained against axial thrust forces?: Axial thrust forces are effectively restrained in ductile iron pipes by utilizing both mechanical restraints and soil resistance. A commonly employed method involves the use of thrust blocks, which are concrete structures constructed at bends, tees, and other directional changes in the pipeline. These blocks are specifically designed to withstand axial forces and prevent any shifting or movement of the pipes caused by the pressure exerted by the flowing fluid. Furthermore, additional support and prevention of axial movement are achieved through the implementation of mechanical restraints, such as pipe restraints, thrust collars, and anchor blocks. Pipe restraints are devices installed around the pipe and connected to adjacent structures, such as walls or concrete collars, in order to prevent any sort of movement. Thrust collars, on the other hand, are utilized to absorb and distribute the thrust forces generated by the flowing fluid. These collars, typically made of ductile iron or steel, are securely fastened around the pipe to counteract axial movement. Moreover, soil resistance plays a crucial role in restraining axial thrust forces. The weight of the soil surrounding the pipe creates frictional resistance, which effectively counteracts the axial forces. In order to ensure effective soil resistance, it is vital to properly backfill the trench, compact the soil, and adequately embed the pipe in the soil. In conclusion, a comprehensive approach involving the use of mechanical restraints such as thrust blocks, pipe restraints, and thrust collars, along with the soil resistance provided by proper trench backfilling and compaction, is employed to restrain axial thrust forces in ductile iron pipes. This approach guarantees the secure placement of the pipes and their ability to withstand the axial forces exerted by the flowing fluid.

Q: Are ductile iron pipes suitable for gravity sewer systems?: Yes, ductile iron pipes are suitable for gravity sewer systems. Ductile iron pipes have high strength, durability, and flexibility, making them an excellent choice for underground sewer networks. They can withstand the pressure and weight of the soil above them, making them ideal for gravity flow systems where wastewater flows naturally due to gravity. Additionally, ductile iron pipes have a long lifespan and are resistant to corrosion, making them a reliable and cost-effective solution for gravity sewer systems.

Q: Can ductile iron pipe be used for fire protection systems?: Ductile iron pipe is indeed applicable for fire protection systems. Renowned for its robustness and longevity, ductile iron pipe proves to be an apt choice for multiple purposes, such as fire protection systems. Its remarkable tensile strength and ability to withstand cracking and fracture make it a dependable option for the conveyance of water and other fire suppression agents. Moreover, the corrosion resistance properties of ductile iron pipe guarantee enduring effectiveness and dependability within fire protection systems. Consequently, ductile iron pipe emerges as a fitting and frequently employed material for fire protection systems, owing to its strength, durability, and resistance to corrosion.

Q: Can ductile iron pipe be used for pump stations?: Yes, ductile iron pipe can be used for pump stations. Ductile iron pipe is a commonly used material for underground water and wastewater systems, including pump stations. It offers several advantages such as high strength, durability, and corrosion resistance, making it suitable for such applications. Additionally, ductile iron pipe is compatible with various types of pumps and is known for its long service life, making it an ideal choice for pump station projects.

Q: The difference between spheroidal graphite cast iron pipe and HDPE water supply pipe: As the HDPE pipe is made of hot melt connection, the construction is more difficult, and the installation cost is about 40% higher than that of the nodular cast iron pipe.

Q: Are ductile iron pipes suitable for industrial applications?: Ductile iron pipes are highly suitable for industrial applications, given their exceptional mechanical properties and durability. This material is strong and sturdy, making it ideal for high-pressure and heavy-duty tasks. These pipes possess a high tensile strength, enabling them to withstand extreme conditions like high temperatures and corrosive environments. Moreover, ductile iron pipes exhibit superior resistance to cracking and fracturing, resulting in a longer lifespan and reduced maintenance costs. They can also handle external loads effectively, making them perfect for underground installations and industrial settings where heavy loads or vibrations may be present. Furthermore, these pipes offer excellent flow characteristics due to their smooth interior surface, ensuring efficient fluid transportation in industrial systems. Their resistance to wear and abrasion guarantees a consistent flow rate over time. Additionally, ductile iron pipes are versatile and can be utilized in various industrial applications, including water supply, wastewater treatment, industrial processes, and mining operations. They are available in a wide range of sizes to meet different requirements and can be easily connected using various jointing methods. In conclusion, ductile iron pipes provide the reliability, strength, and longevity required for industrial applications, making them an ideal choice for industries where durability and performance are essential.

Q: Can ductile iron pipes be used for gas distribution systems?: Certainly, gas distribution systems can utilize ductile iron pipes. The utilization of ductile iron pipes in various infrastructure applications, such as gas distribution systems, is widespread due to their exceptional qualities, including strength, durability, and resistance to corrosion. These pipes are engineered to withstand the high-pressure flow of gas and are suitable for installations both above and below ground. Furthermore, ductile iron pipes exhibit remarkable resistance to external loads, minimizing the risk of damage or fracture, thereby establishing them as a dependable and secure choice for gas distribution systems. Nevertheless, it is crucial to ensure that the pipes receive proper coating and protection against any potential corrosive elements present in the gas or soil to guarantee their longevity and optimal performance.

Q: How does ductile iron pipe perform in areas with high soil compaction?: Areas with high soil compaction benefit greatly from the exceptional performance of ductile iron pipe. One of its key advantages lies in its high strength and durability, enabling it to withstand heavy loads and pressures. In regions where soil compaction is prevalent, leading to ground movement and settling, ductile iron pipe's superior structural integrity guarantees its intactness and effective handling of stress. Moreover, ductile iron pipe exhibits excellent resistance to corrosion, which is especially crucial in areas with high soil compaction. The compacted soil often contains elevated levels of moisture or chemicals that may accelerate the corrosion process. Ductile iron's inherent resistance to corrosion ensures the pipe maintains its integrity over time, even in challenging soil conditions. Flexibility is another advantage of ductile iron pipe. This material possesses a high degree of flexibility, enabling it to absorb and distribute external loads more efficiently. In areas with high soil compaction, where the ground may shift or settle, ductile iron's flexibility minimizes the risk of pipe failure or damage. Additionally, ductile iron pipe boasts a smooth interior surface, enhancing its hydraulic performance. In regions with high soil compaction, where space for proper compaction around the pipe may be limited, the smooth interior reduces the likelihood of sediment buildup or clogging, ensuring efficient water flow. Overall, ductile iron pipe proves to be an excellent solution for areas with high soil compaction. Its strength, corrosion resistance, flexibility, and hydraulic performance establish it as a reliable and durable choice capable of withstanding the challenges presented by compacted soils.

Q: What are the different types of valves available for ductile iron pipe?: Ductile iron pipe offers a variety of valve options, each with its own unique purpose and function. Among the most commonly used valves are: 1. Gate Valves: These valves are designed to either fully open or fully close the fluid flow in the pipe. They feature a gate-like mechanism that permits or blocks the passage of fluid depending on the valve's position. 2. Butterfly Valves: Butterfly valves are quarter-turn valves that utilize a circular disc to control the flow. When open, the disc aligns parallel to the flow, resulting in minimal pressure drop. Conversely, when closed, the disc aligns perpendicular to the flow, effectively stopping the fluid. 3. Ball Valves: Ball valves consist of a spherical disc with a central hole, known as a ball. When the valve is open, the ball is positioned to allow fluid to pass through the hole. To close the valve, the ball is rotated to obstruct the flow. 4. Check Valves: Check valves are specifically designed to permit fluid flow in one direction only, preventing backflow. They incorporate a flap or disc that opens when the flow is in the correct direction and closes to halt the flow when reversal occurs. 5. Plug Valves: Plug valves feature a cylindrical or conical plug with a through-hole that can be rotated to regulate the flow. When open, the hole aligns with the pipe, enabling fluid to pass. Closing the valve positions the hole perpendicular to the pipe, blocking the flow. 6. Pressure Reducing Valves: These valves serve the purpose of controlling and reducing the pressure of fluid within the pipe. They employ a mechanism that adjusts the flow area to achieve pressure reduction. 7. Pressure Sustaining Valves: Pressure sustaining valves are utilized to maintain a specific pressure level within the pipe. They automatically adjust the flow area to sustain the desired pressure. 8. Air Release Valves: Air release valves are employed to eliminate trapped air within the pipe. They allow air to escape while preventing fluid leakage. These examples demonstrate the diverse range of valve options available for ductile iron pipe. The selection of a suitable valve depends on factors such as the application, flow requirements, and desired functionality.

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