DUCTILE IRON PIPES AND PIPE FITTINGS K9 CLASS DN900

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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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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: Are ductile iron pipes resistant to microbiologically induced corrosion?: Yes, ductile iron pipes are generally resistant to microbiologically induced corrosion (MIC). Ductile iron is a type of cast iron that has been treated with magnesium to give it increased strength and flexibility. This treatment creates a protective layer on the surface of the iron, making it less susceptible to corrosion caused by microorganisms. MIC occurs when certain types of bacteria, fungi, or other microorganisms interact with the metal surface of pipes and produce corrosive byproducts. However, ductile iron is generally resistant to MIC because the protective layer formed during the manufacturing process acts as a barrier, preventing microorganisms from directly contacting the metal surface. Additionally, ductile iron pipes are often lined with cement mortar or other protective coatings, which further enhance their resistance to corrosion. These linings provide an additional layer of protection against microorganisms, reducing the potential for MIC. Despite these inherent resistance properties, it is important to note that the resistance to MIC can vary depending on the specific conditions and environment in which the pipes are installed. Factors such as water quality, temperature, and the presence of certain microorganisms can influence the susceptibility of ductile iron pipes to MIC. Therefore, it is essential to consider these factors and take appropriate measures to prevent MIC, such as regular monitoring of water quality, proper maintenance, and the use of corrosion inhibitors or biocides when necessary.

Q: Do ductile iron pipes require internal linings for potable water?: Internal linings are not required for potable water in ductile iron pipes. Ductile iron, a type of iron that has been strengthened and made more flexible, is commonly used in water distribution systems due to its durability and resistance to corrosion. Unlike cast iron or steel, ductile iron pipes have a protective cement-mortar lining. This lining acts as a strong barrier against corrosion and prevents the release of harmful substances into the water. It is applied during the manufacturing process and is designed to withstand the corrosive properties of potable water, eliminating the need for internal linings. Furthermore, the smooth surface of ductile iron pipes ensures the quality and flow of water without the necessity of additional linings.

Q: Is the spigot and socket connection of the ductile iron tube reversed?: The tube is heated, in forming model, and the tube is arranged in the pipe drawing die; under the pressure of the tube is radially compressed, in radial compression in the direction of flow and the formation of metal pipe to pipe in the drawing die.

Q: Can ductile iron pipes be used for wastewater pumping stations?: Indeed, wastewater pumping stations can utilize ductile iron pipes. With their remarkable strength and durability, ductile iron pipes are well-suited for transporting wastewater and effectively managing the immense pressures and corrosive properties of sewage. Furthermore, the smooth interior surface of ductile iron pipes prevents blockages and facilitates the efficient flow of wastewater. Moreover, these pipes exhibit resistance towards external forces like soil displacement or heavy vehicular movement, thereby establishing themselves as a dependable option for wastewater pumping stations.

Q: How do ductile iron pipes handle soil erosion?: Ductile iron pipes are known for their exceptional strength and durability, making them highly resistant to soil erosion. The material used in ductile iron pipes is specifically engineered to withstand the effects of soil erosion, ensuring a long-lasting and reliable infrastructure. The composition of ductile iron pipes includes a mix of iron, carbon, and other alloying elements, which provides the necessary strength and resilience to withstand the forces exerted by soil erosion. These pipes have a higher tensile strength than traditional cast iron pipes, allowing them to resist deformation and cracking under pressure. Furthermore, ductile iron pipes have a protective layer called cement mortar lining, which acts as a barrier between the pipe and the surrounding soil. This lining provides an additional layer of resistance against corrosion and erosion caused by the soil's chemical composition or abrasive particles. As a result, ductile iron pipes remain intact and continue to function effectively even in areas with high soil erosion rates. In terms of installation, ductile iron pipes are designed to be buried underground, ensuring that they are well-protected from direct contact with the soil. Additionally, their jointing systems are designed to provide a secure and watertight connection, minimizing the risk of soil infiltration and subsequent erosion. Overall, ductile iron pipes have a proven track record of effectively handling soil erosion due to their superior strength, protective linings, and appropriate installation techniques. They offer a reliable and long-lasting solution for water and wastewater infrastructure, even in areas prone to soil erosion.

Q: Luo what effect of ductile cast iron: It should be chromium, chromium is anti graphitization elements in ductile iron if the content for a long time, will hinder the graphitization of cast iron, the iron cementite microstructure (Fe3C) content increased, the chilling tendency of the cast iron increases, will make iron brittle, hard, affect the mechanical properties and processing properties of nodular cast iron.

Q: What does "K8" mean in ductile iron pipe grades?: In wall thickness, K is the standard for wall thickness. The smaller the figure, the thinner the wall thickness of the same specification.For example, the K7 wall thickness of K8 is less than K8, and the wall thickness of DN500 is less than K9

Q: What are the interface forms of ductile iron pipes? The best drawings are available. Thank you: There are many kinds of ductile iron pipe interfaces, and the T type interface (sliding type) flexible interface is famous for its fast installation and simple installation.

Q: Method for cutting large diameter ductile iron pipe: When the oxygen and acetylene volume ratio is greater than 1.2, is formed. As more oxygen, burning, the flame length is shortened obviously, cone tapered inner flame almost disappeared, and a strong desire. Making due to oxygen, the oxidation of metal, so are not widely used, only used for welding of brass, to prevent evaporation of zinc.

Q: How do ductile iron pipes handle seismic movements?: Ductile iron pipes are renowned for their exceptional capacity to handle seismic movements, owing to their distinctive properties and construction. This renders them remarkably resistant to stress and deformation caused by ground vibrations during earthquakes. One of the primary merits of ductile iron pipes lies in their superior tensile strength, enabling them to endure substantial forces without succumbing to breakage or rupture. When seismic movements occur, these pipes exhibit flexibility and absorb the energy generated by the ground vibrations, thereby minimizing the risk of damage or failure. Moreover, ductile iron pipes possess exemplary resilience, allowing them to revert to their original shape after being subjected to external forces. This characteristic empowers the pipes to adapt to ground movements during earthquakes, effectively diminishing the likelihood of fractures or leaks. Furthermore, ductile iron pipes boast considerable ductility, enabling them to deform without fracturing. This attribute proves crucial during seismic events, as it enables the pipes to absorb the energy generated by ground vibrations by deforming and subsequently returning to their original shape once the seismic activity subsides. In order to further enhance their capacity to handle seismic movements, ductile iron pipes are frequently designed and installed with flexible joints. These joints grant the pipes the ability to move and adjust to ground movements, offering additional safeguards against damage or failure. In conclusion, ductile iron pipes have demonstrated their extraordinary reliability and resilience in withstanding seismic movements. Their combination of high tensile strength, resilience, and ductility make them an optimal choice for regions prone to earthquakes, ensuring the safety and durability of fluid transportation systems.

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