DUCTILE IRON PIPE K9 DN80

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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:How does ductile iron pipe perform in areas with high groundwater salinity?: Ductile iron pipe performs well in areas with high groundwater salinity due to its inherent corrosion resistance properties. The high levels of salinity in the groundwater can cause corrosion and deterioration of certain materials, but ductile iron is highly resistant to this type of corrosion. Its composition and manufacturing process make it less susceptible to damage from corrosive elements, such as salt and minerals present in high salinity water. The corrosion resistance of ductile iron pipe is primarily attributed to its protective iron oxide coating, which forms naturally on the interior and exterior surfaces of the pipe. This coating acts as a barrier, preventing direct contact between the pipe and the corrosive elements in the groundwater. Additionally, ductile iron pipes are often lined with cement mortar or a protective epoxy coating, which further enhances their resistance to corrosion and provides an additional layer of protection. Furthermore, ductile iron pipe has a long lifespan, often exceeding 100 years, which makes it ideal for areas with high groundwater salinity. Its durability and resistance to corrosion ensure that it can withstand the harsh conditions associated with high salinity environments, minimizing the need for frequent repairs or replacements. In summary, ductile iron pipe is an excellent choice for areas with high groundwater salinity due to its corrosion resistance properties. Its protective iron oxide coating, coupled with optional linings, provides a reliable and long-lasting solution, ensuring the integrity and performance of the pipe system even in challenging environments.

Q:Are ductile iron pipes suitable for use in sewage pumping stations?: Yes, ductile iron pipes are suitable for use in sewage pumping stations. Ductile iron is known for its high strength, durability, and corrosion resistance, making it an ideal material for handling the challenging and corrosive conditions found in sewage systems. Additionally, ductile iron pipes have excellent hydraulic performance and can withstand the high pressures and flow rates typically encountered in sewage pumping stations.

Q:Is ductile iron pipe breakable?: The ductile iron pipe has many uses in our city construction, for our city water supply, gas supply and so on. But ductile iron pipes are also very useful in sewage disposal. As we all know, ductile iron pipe has many excellent properties, such as high strength, corrosion resistance, high pressure resistance, low accident rate, long service life and Gao Yanshen rate. It is an excellent water supply pipe.

Q:What is the expected deflection of ductile iron pipes under load?: The deflection of ductile iron pipes under load can vary depending on several factors, including diameter, wall thickness, material properties, and the magnitude and distribution of the load applied. Ductile iron pipes generally possess a high resistance to deflection due to their inherent strength and durability. They are designed to withstand substantial loads and are commonly used in applications where high pressure and heavy loads are anticipated. Engineers typically employ structural analysis techniques such as finite element analysis or beam theory calculations to ascertain the expected deflection. These methods consider the specific geometry and material properties of the ductile iron pipe to predict its behavior under load. In practice, ductile iron pipes are designed with a maximum allowable deflection, which is usually specified by industry standards or local regulations. This maximum allowable deflection ensures the pipe's structural integrity and functionality. It is worth noting that the expected deflection of ductile iron pipes can also be influenced by external factors like soil conditions, installation methods, and temperature fluctuations. Therefore, it is crucial to employ proper installation techniques and adhere to industry guidelines to ensure the pipes perform as expected and meet the required deflection limits.

Q:Are ductile iron pipes suitable for use in oil refineries?: Yes, ductile iron pipes are suitable for use in oil refineries. Ductile iron is a type of cast iron that offers a unique combination of strength, durability, and flexibility, making it an excellent choice for various applications, including oil refineries. One of the key advantages of ductile iron pipes is their high tensile strength, allowing them to withstand the high pressure and stress commonly found in oil refining processes. This strength is crucial for the transportation of various fluids, including crude oil, refined petroleum products, and chemicals within the refinery. Additionally, ductile iron pipes have excellent corrosion resistance properties, making them highly resistant to the corrosive effects of oil, chemicals, and other substances typically present in oil refineries. This corrosion resistance ensures the longevity and reliability of the pipes, reducing the need for frequent maintenance and replacement. Furthermore, ductile iron pipes have exceptional ductility, which means they can absorb and withstand significant impacts and vibrations without fracturing or breaking. This quality is advantageous in oil refineries where there may be frequent movement or potential stressors due to machinery, equipment, or ground settlement. Moreover, ductile iron pipes have a smooth interior surface that reduces friction, allowing for efficient fluid flow and minimizing pressure loss. This characteristic is essential in oil refineries, as it helps optimize the transportation of fluids, ensuring a smooth and reliable production process. In conclusion, ductile iron pipes are suitable for use in oil refineries due to their high tensile strength, corrosion resistance, ductility, and smooth interior surface. These pipes provide a reliable and durable solution for transporting various fluids within the refinery, contributing to the efficient and safe operation of oil refining processes.

Q:Can ductile iron pipes be used in sewage treatment plants?: Indeed, sewage treatment plants can utilize ductile iron pipes. Given their durability, strength, and resistance to corrosion, ductile iron pipes are frequently employed in sewage systems. They exhibit exceptional resilience against the challenging circumstances commonly encountered in sewage treatment plants, including corrosive wastewater and high-pressure environments. Moreover, ductile iron pipes boast remarkable crack resistance and offer long-term reliability, rendering them an ideal option for sewage treatment plants where a dependable and efficient sewage system is of utmost importance.

Q:Can ductile iron pipes be used for pressure reducing stations?: Yes, ductile iron pipes can be used for pressure reducing stations. Ductile iron pipes are known for their high strength and durability, making them suitable for handling high-pressure applications. They have excellent resistance to corrosion and can withstand the mechanical stresses and strains associated with pressure reducing stations. Additionally, ductile iron pipes have a smooth interior surface, which reduces friction losses and helps maintain a constant and controlled pressure within the system. Therefore, ductile iron pipes are a reliable and commonly used material for pressure reducing stations.

Q:How much water seepage is allowed in the water pressure test for water hose DN300?: For water polo hose DN300, hydraulic pressure test allows water penetration to be 17.60 m3 / (24h km).The water pressure test of the indoor water supply pipeline must meet the design requirements. When the design is not specified, the test pressure of all kinds of material supply piping system is 1.5 times of the work pressure, but not less than 0.6MPa.

Q:Can ductile iron pipe be used for hot water applications?: Yes, ductile iron pipe can be used for hot water applications. Ductile iron pipe is known for its strength, durability, and high resistance to corrosion, which makes it suitable for a wide range of applications, including hot water systems. It can handle high temperatures and pressure, making it a reliable choice for transporting hot water. Additionally, ductile iron pipe's thermal conductivity properties allow for efficient heat transfer, ensuring that hot water is delivered effectively throughout the system. Therefore, when considering materials for hot water applications, ductile iron pipe is a suitable option.

Q:Are ductile iron pipes suitable for desalination plants?: Ductile iron pipes are the perfect fit for desalination plants. These plants typically need to move large amounts of water, and using ductile iron pipes has numerous advantages that make them an ideal choice for this purpose. To begin with, ductile iron pipes possess exceptional strength and durability, which are crucial for withstanding the high pressure and corrosive nature of desalinated water. They can easily handle the rapid flow rates and maintain their structural integrity over long distances, ensuring a dependable and efficient water transportation system. Furthermore, ductile iron pipes exhibit excellent resistance to corrosion, a key factor in desalination plants where the water often contains high levels of salt and other minerals. The corrosion-resistant properties of ductile iron pipes ensure that the water quality remains uncompromised and that the pipes have a long service life, ultimately reducing the costs associated with maintenance and replacement. Moreover, ductile iron pipes have a remarkable ability to withstand impacts, making them particularly valuable in desalination plants where pipelines may be exposed to external forces or accidental damage. By being able to endure such impacts, the risk of leaks is significantly reduced, ensuring a steady and uninterrupted supply of water. Additionally, compared to materials like stainless steel or PVC, ductile iron pipes are more cost-effective. They come with a lower initial cost and require less maintenance, making them the more economical choice for desalination plants. In conclusion, ductile iron pipes are undoubtedly the perfect fit for desalination plants due to their strength, durability, resistance to corrosion and impacts, as well as their cost-effectiveness. These pipes are well-equipped to meet the demanding requirements of desalination plants, providing a reliable and efficient water transportation system.

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