DUCTILE IRON PIPE K8 DN250
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Ductile Iron Cast Pipe is without any defects compare with tradition casting tech, which has many advantages particularly as follow:
(1) High density. In the "vertical upward casting" process, the melt iron of centre liquid column in center crystallizer is continuously feeding for volume shrinkage caused by condensation tube at outer circumference , which lead to be free of shrinkage porosity.
(2) High purity. When melt iron pouring, the mixed impurities such as gas, dross, sand grain which are lighter than melt iron could be eliminated at furnace mouth, its impossible to enter into the crystallizer through the channel, so the melt iron into the crystallizer is very pure.
(3) Strength with toughness. The cooling speed provided by continuous crystallizer is 30 times than sand casting and 5 times than centrifugal casting, and doesn't produce white iron, the eutectic cell volume of continuous cast iron is one eighth to one tenth compare with traditional cast iron. The density of graphite nodule in ductile iron can reach 300-700 pcs/mm2. Therefore, all reason above improve the strength and toughness of continuous cast iron.
(4) Free machining. The high speed cooling make the hardening phase (such as boride, steadite) not appear like reticular, massive or thick, but diffuse like fish bone and pane in shape, moreover, there are tiny graphite flakes inlaid hardening phase. It's free machining in BrinellHardness the range of 250-300HB. However, the Brinell Hardness of 250 is top limit to common metal materials.
(5) Uniform composition of tube wall. The convection mixing of liquid column caused by marching type drawing in crystallizer make the composition of tube wall well-distributed, and concentration gradient very little.
(6) High productivity. To the wall thickness of tube under 10mm, the speed of continuous casting is 1 meter/min, to the wall thickness of tube under 20mm, the speed of continuous casting is 0.5 meter/min, which is high efficiency that centrifugal or other casting tech couldn't reach.
- Q: Can ductile iron pipes be used for offshore oil and gas installations?
- Yes, ductile iron pipes can be used for offshore oil and gas installations. Ductile iron is known for its strength, durability, and corrosion resistance, making it suitable for various applications including offshore environments. Additionally, ductile iron pipes are cost-effective and can withstand high pressure and extreme weather conditions, making them a reliable choice for offshore oil and gas installations.
- Q: Are there any special coatings or linings used for ductile iron pipes?
- Ductile iron pipes utilize specialized coatings and linings to protect against corrosion and increase their lifespan. The interior and exterior surfaces of the pipes are treated with these coatings and linings. Several popular options for ductile iron pipes include cement mortar lining, polyethylene encasement, fusion bonded epoxy (FBE) coating, and polyurethane lining. Cement mortar lining is frequently employed to create a safeguarding layer on the inside of ductile iron pipes. This mixture of cement, sand, and water is applied to the pipe's interior surface. By doing so, it effectively prevents corrosion caused by water or other fluids flowing through the pipes. Polyethylene encasement is an additional protective coating used for ductile iron pipes. This method involves enveloping the pipes with a layer of polyethylene material. This barrier protects against environmental factors and inhibits direct contact between the pipe and the surrounding soil, minimizing the risk of corrosion. Fusion bonded epoxy (FBE) coating is a thermosetting epoxy powder coating that is administered to the exterior of ductile iron pipes. This coating provides exceptional corrosion resistance and mechanical protection. FBE coating is often utilized in aggressive environments where pipes are exposed to chemicals or high moisture conditions. Polyurethane lining is another type of lining employed for ductile iron pipes. It offers superior resistance to both corrosion and abrasion. This liquid polymer lining is sprayed onto the interior surface of the pipes, resulting in a smooth and durable protective layer that extends the life of the pipes. These coatings and linings are essential for maintaining the integrity and longevity of ductile iron pipes, ensuring optimal performance in a variety of applications such as water distribution, wastewater management, and industrial processes.
- Q: How does ductile iron pipe perform in high-temperature steam applications?
- Ductile iron pipe performs well in high-temperature steam applications due to its inherent strength and ability to withstand thermal stress. Its high melting point and resistance to corrosion make it a reliable choice for transporting steam at elevated temperatures. Additionally, ductile iron's thermal conductivity helps to dissipate heat efficiently, ensuring the pipe's integrity and preventing potential failures.
- Q: Are ductile iron pipes resistant to UV degradation?
- Ductile iron pipes are not inherently resistant to UV degradation. Exposure to ultraviolet (UV) radiation from the sun can cause the degradation of various materials, including ductile iron. However, it is important to note that the rate of UV degradation in ductile iron pipes is relatively slow compared to other materials such as plastics or rubber. To mitigate the effects of UV degradation on ductile iron pipes, protective measures can be taken. Coating the pipes with a suitable UV-resistant paint or applying an external protective layer can help minimize the impact of UV radiation. Additionally, proper installation and maintenance practices can also contribute to the longevity and durability of ductile iron pipes. It is worth mentioning that while UV degradation may not be the primary concern for ductile iron pipes, other factors such as corrosion, chemical attack, or mechanical stress can still affect their performance and lifespan. Therefore, it is important to consider all potential environmental factors and apply appropriate protective measures accordingly.
- Q: How does ductile iron pipe perform in areas with high groundwater levels?
- Ductile iron pipe proves to be highly effective in areas characterized by elevated groundwater levels. A notable advantage of this type of pipe lies in its resistance to corrosion, rendering it particularly suitable for underground applications and areas with high water tables. Unlike alternative materials, ductile iron pipe remains impervious to rust or corrosion caused by groundwater, ensuring its longevity and durability. Moreover, ductile iron pipe is distinguished by its exceptional strength and flexibility, enabling it to withstand the external pressure exerted by high groundwater levels. It effectively resists the buoyant forces exerted by water, thereby preventing any displacement or flotation. Furthermore, the joints of ductile iron pipe are tightly sealed, thus preventing any infiltration of groundwater into the pipe system. This guarantees the absence of leaks or water supply contamination, which is of utmost importance in areas with high groundwater levels. All in all, ductile iron pipe emerges as the optimal choice for areas with high groundwater levels due to its corrosion resistance, strength, and ability to maintain a secure and tightly sealed system. It provides a dependable and long-lasting solution for water distribution and sewer systems, even in challenging environments.
- Q: Can ductile iron pipes be used in acidic environments?
- Ductile iron pipes are capable of being utilized in acidic environments. These pipes possess a strong resistance to corrosion, rendering them suitable for a wide range of applications, including those involving acidic conditions. The heightened carbon content found in ductile iron pipes generates a shielding layer on the pipe's surface, effectively thwarting direct attacks from acid on the iron. Furthermore, the interior lining of the pipe can be coated with epoxy or other protective substances to bolster its resistance to corrosion in acidic settings. Nevertheless, it is crucial to take into account the precise concentration and type of acid present within the environment, as certain acids may still induce corrosion over time. It is highly recommended to seek counsel from professionals or manufacturers to ensure the appropriate selection of materials for specific acidic conditions.
- Q: What is ductile iron pipe?
- Ductile iron pipe is a kind of cast iron pipe. In quality, the spheroidization of cast iron pipes is controlled to be 1-3 (spheroidization rate 80%), so the mechanical properties of the material have been better improved, with the nature of iron and the properties of steel. Ductile cast iron pipe after annealing, the microstructure is ferrite and pearlite, good mechanical properties, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc..
- Q: Are ductile iron pipes suitable for railway crossings?
- Railway crossings can indeed utilize ductile iron pipes. Ductile iron, a robust and long-lasting material, finds extensive use in numerous applications, which include water and sewage systems. Its exceptional tensile strength and flexibility allow it to withstand heavy loads and vibrations, both of which are commonly encountered in the vicinity of railway crossings. Moreover, ductile iron pipes exhibit exceptional resistance to corrosion, making them particularly valuable in areas prone to moisture and exposure to diverse weather conditions. This resistance guarantees the pipes' durability, ultimately reducing the need for maintenance and replacement, thus cutting costs. Furthermore, ductile iron pipes are renowned for their effortless installation and versatility. They seamlessly integrate with other pipe types and fittings, facilitating their incorporation into the overall railway crossing infrastructure. However, it is important to bear in mind that the suitability of ductile iron pipes for railway crossings hinges on various factors, such as load requirements, soil conditions, and specific project specifications. Consulting engineering professionals and adhering to industry standards and regulations is vital to ensure the appropriate selection and installation of ductile iron pipes for railway crossings.
- Q: Are ductile iron pipes suitable for bridge piers or abutments?
- Yes, ductile iron pipes are suitable for bridge piers or abutments. Ductile iron is known for its high strength and durability, making it a reliable choice for supporting heavy loads in bridge construction. Additionally, ductile iron pipes are corrosion-resistant, which is crucial for structures exposed to moisture and environmental factors.
- Q: What are the different methods for cutting ductile iron pipe?
- The cutting of ductile iron pipe can be done in various ways, depending on the project's specific needs and limitations. Some commonly used methods include: 1. Manual Cutting: To cut through the ductile iron pipe, one can employ a handheld saw or grinder equipped with an abrasive cutting wheel. While this method is simple and cost-effective, it can be laborious and time-consuming for larger pipe sizes. 2. Mechanical Cutting: Specialized machinery, such as bandsaws, pipe cutters, or hydraulic cutting machines, can be utilized to mechanically cut through the ductile iron pipe. These machines offer faster and more precise cuts, especially for larger pipe sizes. However, they tend to be more expensive and require skilled operators. 3. Torch Cutting: Also known as oxyfuel cutting, torch cutting involves heating the ductile iron pipe using a torch and then introducing a high-pressure oxygen stream to facilitate a chemical reaction that cuts through the metal. This method is effective for thick-walled ductile iron pipes but necessitates proper safety precautions due to the significant heat and sparks it generates. 4. Plasma Arc Cutting: The utilization of a high-velocity jet of ionized gas (plasma) to melt and cut through the ductile iron pipe characterizes plasma arc cutting. This method is ideal for precision and efficiency when cutting through thick-walled pipes. However, it can be more costly and may require specialized equipment and training. 5. Waterjet Cutting: Waterjet cutting involves using a high-pressure jet of water mixed with an abrasive material to cut through the ductile iron pipe. This method offers high precision and does not generate heat or sparks, making it suitable for sensitive environments. However, it tends to be slower and more expensive compared to other cutting methods. When selecting the appropriate method for cutting ductile iron pipe, factors such as pipe size, project requirements, budget, and safety must be taken into consideration. Consulting professionals or experts in the field can assist in determining the most suitable method for a specific project.
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DUCTILE IRON PIPE K8 DN250
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
OKorder Financial Service
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