DUCTILE IRON PIPES AND PIPE FITTINGS K8 CLASS DN350

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 22 pc

Supply Capability:: 3000 pc/month

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Ductile Iron Pipe On Sale Made In China DN100

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 pipes be used for fire protection systems?: Yes, ductile iron pipes can be used for fire protection systems. Ductile iron is a type of cast iron that exhibits high strength and flexibility, making it suitable for a wide range of applications, including fire protection systems. It has excellent mechanical properties, including high tensile strength and impact resistance, which are important factors for withstanding the high pressures and stresses that can occur during fire suppression efforts. Ductile iron pipes are known for their durability and longevity, which is crucial for fire protection systems that need to be reliable and functional for extended periods of time. They have a longer lifespan compared to other materials, such as PVC or galvanized steel, and are less prone to corrosion, which is especially important for fire protection systems as they need to remain operational even after long periods of inactivity. Furthermore, ductile iron pipes have excellent fire resistance properties. They can withstand high temperatures without losing their structural integrity, ensuring that the fire protection system remains intact and functional during a fire emergency. This is crucial for ensuring the safety of occupants and minimizing property damage. In addition to their mechanical and fire-resistant properties, ductile iron pipes are also compatible with various types of fittings, valves, and accessories commonly used in fire protection systems. This allows for easy installation and integration into existing fire suppression networks. Overall, ductile iron pipes are a reliable and suitable choice for fire protection systems due to their high strength, durability, fire resistance, and compatibility with other system components.

Q:Are ductile iron pipes suitable for pressure reducing valve stations?: Yes, ductile iron pipes are suitable for pressure reducing valve stations. Ductile iron pipes have excellent strength and durability, making them capable of withstanding high pressure conditions. They also have good corrosion resistance, which is essential for long-term reliability in a pressure reducing valve station.

Q:If the ductile iron pipe is broken, can we use rush repair?: In this way, manpower, material resources and financial resources can be saved, time can be saved, and unnecessary troubles to the citizens' water supply can also be reduced.

Q:Is nodular cast iron pipe filled with Yau Ma Tei?: In many areas of our country, ductile iron pipe in the middle and small diameter to tube connected with the tube, the bearing type or flange interface method; ductile iron, angle limit must be allowed better seismic performance and sealing performance.

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 resistant to acid mine drainage corrosion?: Generally, ductile iron pipes are resistant to corrosion caused by acid mine drainage (AMD). Ductile iron is a highly durable material that has been widely used in various industries, including mining and water distribution, because of its excellent ability to resist corrosion. AMD is a significant environmental issue that occurs when water comes into contact with sulfide minerals in mining areas, resulting in the formation of sulfuric acid. This acid can cause damage to various materials, including pipes, and can contaminate water sources. Ductile iron pipes have a protective layer made of cement mortar or epoxy coating, which acts as a barrier between the corrosive AMD and the pipe material. This protective layer prevents direct contact and reduces the likelihood of corrosion. Moreover, ductile iron pipes have a strong resistance to both internal and external corrosion, making them suitable for environments where AMD may be present. They have a proven track record of reliability and longevity, even in harsh conditions, ensuring the integrity of the water distribution system and minimizing the risk of leaks or failures. However, it's important to note that the resistance of ductile iron pipes to AMD corrosion can depend on other factors, such as the specific composition and concentration of the AMD, the duration of exposure, and the temperature. Therefore, it is recommended to seek advice from experts and conduct thorough material testing and analysis to determine the suitability of ductile iron pipes in specific AMD environments.

Q:What are the different corrosion protection options for ductile iron pipe?: There are several corrosion protection options available for ductile iron pipe to ensure its longevity and durability. These options include: 1. Cement Mortar Lining: This involves coating the inner surface of the pipe with a layer of cement mortar, which acts as a barrier between the pipe and corrosive elements in the water or soil. Cement mortar lining provides excellent corrosion resistance and can last for several decades. 2. Polyethylene Encasement: This method involves wrapping the ductile iron pipe with a layer of polyethylene material. The polyethylene acts as a physical barrier, protecting the pipe from external corrosive elements. Polyethylene encasement is commonly used in aggressive soil conditions and can offer long-lasting protection. 3. Internal and External Coatings: Various types of coatings can be applied to the inner and outer surfaces of the ductile iron pipe to provide corrosion resistance. These coatings can be epoxy, polyurethane, or fusion-bonded epoxy (FBE) coatings. These coatings create a barrier between the pipe and the surrounding environment, preventing corrosion. 4. Cathodic Protection: This method involves using an electrical current to protect the pipe from corrosion. Cathodic protection systems can be either galvanic (sacrificial anode) or impressed current systems. These systems direct the flow of electrons to prevent the oxidation of the ductile iron pipe. 5. Zinc Coating: Zinc coating, also known as galvanizing, involves applying a layer of zinc to the surface of the ductile iron pipe. The zinc acts as a sacrificial anode, corroding instead of the iron pipe. Zinc coating provides effective corrosion protection, particularly in soil conditions with low resistivity. It's important to note that the choice of corrosion protection option for ductile iron pipes depends on various factors such as the environment, water chemistry, soil conditions, and expected service life. Consulting with corrosion protection specialists and engineers can help in selecting the most suitable option for specific applications.

Q:Can ductile iron pipes be used for stormwater management systems?: Yes, ductile iron pipes can be used for stormwater management systems. Ductile iron pipes are known for their strength, durability, and corrosion resistance, making them suitable for handling stormwater runoff. They can effectively transport large volumes of water and withstand the pressure and impact associated with stormwater management.

Q:Are ductile iron pipes suitable for power plant cooling systems?: Yes, ductile iron pipes are suitable for power plant cooling systems. Ductile iron pipes offer several advantages that make them ideal for such applications. Firstly, ductile iron is known for its high strength and durability, making it capable of withstanding the high pressure and heavy loads often associated with power plant cooling systems. Additionally, ductile iron pipes have excellent resistance to corrosion, which is crucial in an environment where water and other cooling fluids are constantly flowing. Furthermore, ductile iron pipes have good thermal conductivity, meaning they can efficiently transfer heat away from the power plant equipment, contributing to the overall cooling process. Lastly, ductile iron pipes are also cost-effective compared to other materials commonly used in power plant cooling systems, making them a practical choice for such applications. Overall, ductile iron pipes are a reliable and suitable option for power plant cooling systems due to their strength, corrosion resistance, thermal conductivity, and cost-effectiveness.

Q:What is the cost of ductile iron pipes compared to other materials?: Several factors, such as size, length, and application, can cause the cost of ductile iron pipes to vary when compared to other materials. Generally, ductile iron pipes are more expensive than PVC or HDPE pipes due to their superior strength, durability, and longevity. Although the initial cost of ductile iron pipes may be higher, they offer a cost-effective solution in the long term because of their extended lifespan. With a life expectancy of over 100 years, ductile iron pipes are reliable and require minimal maintenance for water, sewage, and gas distribution systems. This longevity reduces the need for frequent replacements, repairs, and associated expenses. Additionally, ductile iron pipes are known for their exceptional resistance to external loads, pressure, and corrosion, making them suitable for various applications, including high-pressure water and gas transmission, industrial pipelines, and sewer systems. The inherent strength of ductile iron pipes allows for thinner walls, resulting in reduced material and installation costs compared to other materials. It is important to consider that the cost of ductile iron pipes can also be influenced by market conditions, transportation costs, and the availability of raw materials. Therefore, it is advisable to consult with suppliers and conduct a cost-benefit analysis before making a decision.

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