DUCTILE IRON PIPE K9 DN150

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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 pipe be used for water treatment plants?: Yes, ductile iron pipe can be used for water treatment plants. Ductile iron pipes are known for their strength, durability, and corrosion resistance, making them suitable for transporting water and other fluids in various industrial applications, including water treatment plants.

Q: How are ductile iron pipes repaired if they get damaged?: There are several methods available for repairing ductile iron pipes, each dependent on the severity of the damage. Below are some commonly used techniques: 1. Spot Repair: When the damage is minimal and localized, a spot repair can be performed. This involves removing the damaged section of the pipe and replacing it with a new one. The new section is typically connected to the existing pipe using mechanical couplings or flanged connections. 2. Pipe Lining: If the damage is more extensive but the pipe remains structurally sound, pipe lining is a suitable option. This method entails inserting a liner into the damaged pipe, creating a new smooth surface. Various materials like epoxy or cured-in-place pipe (CIPP) can be used as liners. The advantage of this technique is that it eliminates the need for excavation and complete replacement of the pipe. 3. Pipe Bursting: In situations where the pipes are severely damaged or deteriorated, pipe bursting may be the most optimal solution. This process involves pulling a new pipe through the damaged one, simultaneously fracturing the old pipe and substituting it with a new one. Pipe bursting is typically employed when the existing pipe is irreparable and necessitates complete replacement. 4. Welding and Patching: In certain cases, small leaks or cracks in ductile iron pipes can be rectified through welding or patching. Welding involves melting and fusing the metal to seal the damaged area. Patching, on the other hand, involves applying a specialized epoxy or composite material over the affected section to create a watertight seal. It is essential to consider factors such as the extent of the damage, accessibility to the pipe, and the proficiency of the repair crew when selecting the appropriate repair method. Regardless of the technique chosen, a thorough assessment, meticulous planning, and skillful execution are necessary to ensure a successful and long-lasting repair.

Q: Can ductile iron pipes be used for underground parking lot drainage?: Yes, ductile iron pipes can be used for underground parking lot drainage. Ductile iron is a strong and durable material that is commonly used for underground piping systems. It has excellent resistance to corrosion, making it suitable for applications where the pipes will be exposed to moisture and water. Additionally, ductile iron pipes have high tensile strength, which allows them to handle heavy loads and withstand the pressure exerted by vehicles in a parking lot. Therefore, using ductile iron pipes for underground parking lot drainage is a reliable and long-lasting solution.

Q: How does ductile iron pipe perform in areas with high soil erosion?: Ductile iron pipe is known for its exceptional strength and durability, making it a reliable choice for areas with high soil erosion. Its unique composition, which includes graphite nodules, allows it to be both flexible and resistant to fractures or cracks, even in challenging environments. This makes ductile iron pipe highly capable of withstanding the impact of soil erosion. In areas with high soil erosion, the soil particles can scrape against the surface of the pipe, potentially causing abrasions or damage. However, ductile iron pipe's thick wall thickness and corrosion-resistant coating provide an effective barrier against these abrasive forces. This means that even in areas with significant soil erosion, ductile iron pipe can maintain its structural integrity and functionality. Moreover, ductile iron pipe's ability to resist corrosion further enhances its performance in areas with high soil erosion. Soil erosion often leads to an increased presence of moisture, which can accelerate the corrosion process of certain materials. However, ductile iron pipe's protective coating, typically made from zinc or epoxy, acts as a shield against corrosion, ensuring its long-term performance and reliability. In summary, ductile iron pipe demonstrates excellent performance in areas with high soil erosion due to its strength, flexibility, and resistance to fractures or cracks. Its thick wall thickness and corrosion-resistant coating make it highly durable against abrasive forces and corrosion, allowing it to withstand the challenges posed by soil erosion. As a result, ductile iron pipe is a dependable choice for infrastructure projects in such areas, providing long-lasting and efficient water and wastewater transportation systems.

Q: What is the purpose of ductile iron pipes?: Ductile iron pipes serve the crucial function of establishing a dependable and sturdy infrastructure for fluid transportation, including water, sewage, and gas. In comparison to steel or PVC pipes, ductile iron pipes offer notable advantages. One primary objective lies in ensuring the secure and efficient distribution of water to communities. Ductile iron pipes are specifically designed to endure high pressures and endure the challenging conditions found underground, rendering them an excellent choice for water supply systems. With their extended lifespan and minimal maintenance requirements, the necessity for frequent repairs or replacements is greatly reduced. Another purpose involves the efficient conveyance of sewage and wastewater. Ductile iron pipes possess exceptional resistance to corrosion, guaranteeing their ability to withstand the corrosive properties of sewage and other waste materials. Additionally, their structural strength enables them to endure heavy loads and ground movements, making them well-suited for underground sewer systems. Ductile iron pipes are also employed for gas transportation. Their remarkable mechanical properties empower them to withstand applications involving high pressures, making them the ideal choice for gas distribution networks. Furthermore, their durability and resistance to external factors like soil movement or temperature changes establish them as a reliable option for gas transmission systems. In essence, the overarching purpose of ductile iron pipes is to provide a resilient and enduring solution for the safe and efficient transportation of fluids. By contributing to the development and maintenance of essential infrastructure systems, they effectively support the needs of our communities.

Q: Can ductile iron pipe be used for industrial applications?: Yes, ductile iron pipe can be used for industrial applications. Ductile iron pipes are known for their durability, strength, and resistance to corrosion, making them suitable for various industrial settings. They can handle high-pressure and heavy-duty applications, making them ideal for industries such as water and wastewater, oil and gas, and chemical processing.

Q: How does ductile iron pipe handle changes in pipe diameter or size?: Ductile iron pipe offers a convenient solution for dealing with alterations in pipe diameter or size. Its excellent flexibility and capacity to adapt to changes in pipe dimensions without compromising its structural integrity are a result of its unique composition, which contains a significant amount of graphite nodules that provide ductility and elasticity to the material. When faced with adjustments in pipe diameter or size, ductile iron pipe can be easily manufactured or modified to meet specific requirements. It can be cast or fabricated in different diameters and lengths, allowing for seamless integration and adaptability within a pipeline system. This versatility proves particularly advantageous when connecting different pipe sizes or making alterations to the pipeline layout. Furthermore, the superior mechanical properties of ductile iron pipe enable it to withstand the stresses and forces associated with changes in pipe diameter or size. It possesses high tensile strength, impact resistance, and durability, ensuring its ability to handle the internal and external pressures exerted on the pipe during operations. Moreover, the jointing systems employed with ductile iron pipe contribute to its ability to handle changes in diameter or size. Various joint types, including push-on, restrained, or mechanical joints, provide secure and leak-free connections between different pipe sections. These joints facilitate easy assembly and disassembly, enabling efficient adjustments to the pipe diameter or size as required. In conclusion, ductile iron pipe is well-equipped to handle changes in pipe diameter or size due to its inherent flexibility, adaptability, and robustness. Its composition, manufacturing capabilities, and jointing systems all contribute to its capacity to accommodate variations in pipe dimensions without compromising its performance.

Q: The difference between ductile iron pipe and steel pipe used in pipe jacking: The casting processes of nodular cast iron pipes are continuous casting, hot die casting and water-cooled centrifugal casting, in which water cooling is the most advanced process in the world,

Q: What material is ductile cast iron 235A?: Ductile iron is a pig iron

Q: What is the weight of a typical ductile iron pipe?: The weight of a typical ductile iron pipe can vary depending on its size and wall thickness. Generally, ductile iron pipes are available in sizes ranging from 3 inches to 64 inches in diameter. The weight of these pipes can range from a few pounds per foot for smaller sizes to several hundred pounds per foot for larger diameters. Wall thickness also plays a significant role in determining the weight of the pipe. Thicker walls will result in a heavier pipe. For instance, a 10-inch ductile iron pipe with a wall thickness of 0.25 inches may weigh around 26 pounds per foot, whereas a 24-inch ductile iron pipe with a wall thickness of 0.5 inches can weigh approximately 175 pounds per foot. It is important to consult specific manufacturer specifications or engineering references to determine the precise weight of a particular ductile iron pipe.

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