DUCTILE IRON PIPES AND PIPE FITTINGS K8CLASS DN300

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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:Ductile iron and gray iron is what are the advantages and disadvantages of it: Comparison of ductile iron and cast iron (gray iron)Compared with cast iron, ductile iron has an absolute advantage in strength. The tensile strength of ductile iron is 60K, while the tensile strength of cast iron is only 31k. The yield strength of ductile iron is 40K, while the cast iron does not show yield strength, and eventually breaks. The strength to cost ratio of ductile iron is far superior to that of cast iron. Ductile iron is the same as cast iron in corrosion resistance.

Q:Can ductile iron pipes be used for drainage systems in airports?: Yes, ductile iron pipes can be used for drainage systems in airports. Ductile iron pipes are known for their durability, strength, and resistance to corrosion, making them suitable for various applications, including drainage systems. They are capable of withstanding heavy loads, which is important in airports due to the constant movement of aircraft and vehicles. Ductile iron pipes are also flexible, allowing for easy installation and modification when necessary. Additionally, they have a long lifespan, reducing the need for frequent maintenance or replacement. Therefore, ductile iron pipes can be a reliable choice for drainage systems in airports, ensuring efficient water flow and preventing water accumulation, which is crucial for maintaining safe and operational airport facilities.

Q:How are ductile iron pipes protected against external corrosion?: Ductile iron pipes are protected against external corrosion through the application of protective coatings such as polyethylene, epoxy, or zinc. These coatings act as a barrier between the pipe and the surrounding environment, preventing contact with corrosive elements such as water, soil, or chemicals. Additionally, cathodic protection techniques, such as sacrificial anodes or impressed current systems, may also be employed to further enhance the corrosion resistance of ductile iron pipes.

Q:QT400-10 nodular cast iron requires hardness of HRC47~51. Why can't quench hardness be reached?: Quenching temperature: when the silicon content of nodular cast iron is 2.0-3.0%, the quenching temperature is 860-900 DEG C, the silicon content is low, and the upper limit is taken when the lower limit is high.2. holding time: because of the consideration of diffusion graphite cast iron, alloy steel is therefore the holding time, holding time longer than carbon steel.3. oil quenching.

Q:How does ductile iron pipe perform in areas with high soil movement?: Ductile iron pipe possesses notable attributes of strength, durability, and flexibility, rendering it an optimal selection for locales with substantial soil movement. Differing from alternative piping materials, like PVC or concrete, ductile iron pipe demonstrates the capability to endure significant ground shifts without undergoing catastrophic failure. The inherent robustness of ductile iron pipe empowers it to withstand the external forces imposed by soil movement, encompassing settlement, lateral displacement, and ground heave. Its elevated tensile strength and capacity to endure bending stresses render it less prone to developing cracks, fractures, or leaks, thereby ensuring the pipeline system's integrity. Moreover, ductile iron pipe exhibits remarkable deflection capabilities, imparting the capacity to flex and accommodate ground movement without succumbing to breakage. This flexural aptitude enables the pipe to disseminate the stress engendered by soil movement along its length, thereby diminishing the concentration of forces at any specific juncture. In regions characterized by pronounced soil movement, ductile iron pipe also reaps the advantages of its corrosion resistance properties. Typically coated with a protective layer, such as cement-mortar lining or polyethylene encasement, the pipe serves as a barrier against corrosive elements found in the soil. This protective coating effectively mitigates damage and deterioration, ensuring the pipe's endurance and performance, even in demanding soil conditions. All in all, ductile iron pipe is highly recommended for locales with substantial soil movement due to its exceptional strength, flexibility, and corrosion resistance. Its ability to withstand ground shifts and distribute stress establishes it as a dependable choice for long-term performance, necessitating minimal maintenance.

Q:Why is the cast iron tube lined with cement? Under what circumstances are ductile iron pipes lined with cement, and under what circumstances do not have to be lined with cement?: Cement lining to protect water quality, reduce loss, improve the service life of the pipeline ductile, ductile iron pipes are generally lined, which the en545 standard specifies the quality of what kind of what kind of cement.

Q:What is the average diameter range of ductile iron pipes?: The diameter of ductile iron pipes can vary depending on the application and industry standards. In general, there is a wide range of diameters available to meet different requirements. Ductile iron pipes can start from as small as 4 inches (100 mm) and go up to 64 inches (1600 mm) or even larger. These sizes are commonly used for water distribution, sewer systems, and infrastructure projects. It is important to consider factors such as local regulations, project specifications, and engineering considerations when determining the appropriate diameter range. Consult industry standards and relevant authorities for specific applications.

Q:Can ductile iron pipe be used in corrosive environments?: Yes, ductile iron pipe can be used in corrosive environments. Ductile iron is known for its excellent corrosion resistance due to its protective oxide layer, making it suitable for various corrosive applications such as wastewater, chemical plants, and underground installations.

Q:What are the disadvantages of using ductile iron pipes?: Using ductile iron pipes in various applications comes with several drawbacks. Firstly, these pipes tend to be more expensive compared to other types like PVC or HDPE, which can be problematic for projects with budget constraints. Secondly, their relatively heavy weight makes transportation and installation more labor-intensive and time-consuming. This increases overall project costs, especially when specialized equipment and skilled workers are required. Another disadvantage is their susceptibility to corrosion. Exposure to environmental factors, like soil conditions and water chemistry, can lead to rust and scale formation on the inner and outer surfaces of the pipe. This reduces the pipe's lifespan and potentially affects water quality. Furthermore, ductile iron pipes can crack or break under certain conditions, especially when subjected to heavy loads or significant ground movement. This necessitates costly repairs or replacements, causing additional expenses and disruptions to the water supply. Lastly, ductile iron pipes have relatively low resistance to impact and abrasion compared to other materials. This makes them more vulnerable to damage from external forces, such as construction activities or accidental impacts, resulting in increased maintenance and repair costs. In conclusion, while ductile iron pipes have advantages like high tensile strength and durability, it is crucial to consider these disadvantages before deciding to use them in a specific project.

Q:Can centrifugal cast iron pipe be galvanized or coated with asphalt which is good for corrosion prevention?: By spraying zinc and epoxy coal tar coating of ductile iron pipe wall (or epoxy resin paint, polyurethane, etc.) wall using Portland cement (or epoxy powder, epoxy, polyurethane, ceramics etc.) wall coating can effectively active substances in soil and the formation of an insoluble zinc salt protection tube, the internal coating can inhibit corrosion of pipe body fluid medium.

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