DUCTILE IRON PIPE AND PIPE FITTINGS K9 CLASS DN1100

DUCTILE IRON PIPE AND PIPE FITTINGS K9 CLASS DN1100

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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: Ways of connecting ductile iron pipes: In accordance with the wall thickness or pressure capacity, ductile iron pipe is divided into K8, K9, K10, K11, K12 four class, where the contract does not indicate, according to K9 supply.

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: How are ductile iron pipes protected against internal corrosion?: To safeguard ductile iron pipes from internal corrosion, a range of preventive measures are implemented. The foremost technique involves the application of a protective coating on the pipe's inner surface. This coating acts as a barrier that separates the pipe from the conveyed fluid, thereby minimizing the risk of direct contact and corrosion. Another commonly employed method is the usage of a cement mortar lining, which fortifies the protective barrier, thereby reducing the possibility of corrosion, even in aggressive environments. Moreover, this lining ensures a smoother surface, enhancing fluid flow by diminishing friction. Apart from coatings and linings, ductile iron pipes are often designed with corrosion-resistant alloys or additives. These alloys, such as zinc or epoxy, are incorporated during the manufacturing process, offering an additional layer of defense against internal corrosion. They function as sacrificial anodes, corroding over time to shield the underlying iron from degradation. Regular maintenance and inspection play a vital role in safeguarding ductile iron pipes against internal corrosion. Monitoring the condition of protective coatings, identifying any signs of degradation or damage, and promptly addressing such issues are imperative to ensure the long-term integrity of the pipes. In summary, a combination of protective coatings, cement mortar linings, corrosion-resistant alloys, and regular maintenance efforts collaboratively safeguard ductile iron pipes against internal corrosion. This approach prolongs their lifespan and guarantees the secure transportation of fluids.

Q: Can ductile iron pipe be used for nuclear power plants?: Yes, ductile iron pipe can be used for certain applications in nuclear power plants, particularly in non-safety-related systems such as cooling water, fire protection, or ancillary service pipelines. However, for safety-related systems that involve high-pressure or high-temperature conditions, materials with higher performance characteristics such as stainless steel or alloy materials are typically preferred.

Q: What are the typical joint restraint requirements for ductile iron pipes in seismic zones?: In seismic zones, the typical joint restraint requirements for ductile iron pipes are designed to ensure the structural integrity and prevent displacement or separation of the pipes during seismic events. These requirements are crucial to maintain the reliability and functionality of the pipeline system. One common joint restraint requirement for ductile iron pipes in seismic zones is the use of flexible or mechanical joint systems. Flexible joints, such as rubber gasket joints, can absorb and accommodate the movement caused by seismic activity. These joints allow for axial movement, angular deflection, and expansion/contraction of the pipes, reducing the risk of pipe failure or damage. Another important requirement is the use of adequate anchoring systems. This involves securing the pipes to the surrounding structures or embedding them in concrete thrust blocks to prevent excessive movement or displacement during seismic events. Anchoring systems help distribute the forces generated by the earthquake and minimize the risk of pipe separation or breaking. Additionally, seismic design standards often require the use of seismic restraints, such as seismic joint restraints or bracing systems, to further enhance the stability and integrity of the ductile iron pipes. These restraints are designed to limit the movement of the pipes in specific directions, reducing the potential for damage and maintaining the overall system performance. It is important to note that the specific joint restraint requirements for ductile iron pipes in seismic zones may vary depending on local building codes, seismic activity levels, and engineering considerations. It is crucial to consult the relevant regulations and work with experienced professionals in the design and installation process to ensure compliance with the necessary requirements for seismic resistance.

Q: Are ductile iron pipes suitable for use in cooling water systems?: Ductile iron pipes are indeed appropriate for utilization in cooling water systems. They exhibit remarkable strength and durability, rendering them impervious to the intense pressure and corrosive properties inherent in such systems. Furthermore, they possess the ability to withstand extreme fluctuations in temperature while delivering enduring performance. Additionally, ductile iron pipes exhibit commendable resistance to the proliferation of microorganisms, a crucial aspect in preserving the quality of the cooling water. Moreover, these pipes facilitate effortless installation and necessitate minimal maintenance, thereby constituting a cost-effective alternative for cooling water systems. In summary, ductile iron pipes represent a dependable and suitable choice for employment in cooling water systems.

Q: How can the old water pipe ductile iron pipe be opened with three flanges?: First, the new process adopted; groove connection. With groove pieces, of course, ductile iron pipes should also be grooved pipes.Two, the old process1. dozen to lead lead; cut into strips, with a file play in the interface2. use expanded cement with asbestos3 use the asphaltBecause the interface material used in the old process is poisonous, especially in the water supply pipeline, environmental protection requires a new process now.

Q: Can ductile iron pipes be used for submarine pipelines?: Yes, ductile iron pipes can be used for submarine pipelines. Ductile iron is known for its high strength and durability, making it suitable for various applications, including underwater installations. Ductile iron pipes have been successfully used in the construction of submarine pipelines for several decades. They can withstand the harsh conditions of underwater environments, such as corrosion, pressure, and shifting seabed. Additionally, ductile iron pipes have excellent resistance to external loading, making them ideal for submarine pipelines that need to withstand the weight of water and potential impacts. However, it is important to consider factors such as coating, cathodic protection, and proper installation techniques to ensure the long-term performance and integrity of the submarine pipeline.

Q: Can ductile iron pipes be used for cooling water systems?: Yes, ductile iron pipes can be used for cooling water systems. Ductile iron pipes are known for their durability, strength, and corrosion resistance, making them suitable for a wide range of applications, including cooling water systems. These pipes have the capacity to handle high pressure and temperature fluctuations, making them ideal for circulating and transporting cooling water. Additionally, ductile iron pipes have a smooth internal surface that reduces friction and minimizes the risk of scaling or clogging, ensuring efficient flow of the cooling water. Therefore, ductile iron pipes can be a reliable and efficient choice for cooling water systems.

Q: Can ductile iron pipes be used in areas with high water velocity?: Yes, ductile iron pipes can be used in areas with high water velocity. Ductile iron pipes are known for their strength and durability, making them suitable for handling high water velocities and pressures. They have a high resistance to corrosion and can withstand the forces generated by fast-moving water. Additionally, ductile iron pipes are designed to have smooth internal surfaces, which helps in reducing friction and minimizing the impact of high water velocity on the pipe. However, it is important to ensure proper installation and maintenance practices to maximize the performance and longevity of the ductile iron pipes in high water velocity areas.

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