DUCTILE IRON PIPE K9 DN1400

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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:What are the advantages and disadvantages of spheroidal graphite cast 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.

Q:Ductile iron pipe converter, steel transition DN100 turn 100, what is the specific accessories name? Can you supply photos?: Strong toughness: the pipe can be stretched to 5 times the original length without fracture, which is suitable for uneven geological conditions without affecting its link performance. In the case of a breach, there is no extension of the mouth due to the breach.

Q:Can ductile iron pipes be used in contaminated groundwater systems?: Yes, ductile iron pipes can be used in contaminated groundwater systems. Ductile iron pipes are known for their high strength and durability, making them suitable for various applications including water and wastewater systems. They have corrosion resistance properties that protect against internal and external corrosion, making them a reliable choice for transporting water, even in contaminated groundwater systems. When dealing with contaminated groundwater, it is essential to consider the level and type of contamination present. Ductile iron pipes are resistant to many common chemicals found in groundwater, such as certain acids and alkalis. However, in cases of severe or specific chemical contamination, it may be necessary to consider alternative pipe materials that offer better resistance to those specific substances. Furthermore, proper installation and maintenance practices are crucial to ensure the long-term performance of ductile iron pipes in contaminated groundwater systems. Regular inspections, cleaning, and the use of appropriate protective coatings can help mitigate any potential risks associated with contamination. Overall, ductile iron pipes can be effectively used in contaminated groundwater systems, provided the level and type of contamination are within acceptable limits and proper installation and maintenance practices are followed. It is always recommended to consult with experts and consider local regulations and guidelines when making decisions regarding the suitability of pipe materials in specific groundwater systems.

Q:Can ductile iron pipes be used for trenchless installations?: Indeed, trenchless installations can utilize ductile iron pipes. Horizontal directional drilling (HDD) and pipe bursting techniques have gained considerable popularity as alternatives to the conventional open-cut trenching method for underground utility installations. Ductile iron pipes possess the necessary qualities of strength, durability, and flexibility, rendering them suitable for trenchless installations. They can endure the formidable forces encountered during HDD and pipe bursting operations without jeopardizing their structural integrity. Moreover, ductile iron pipes exhibit remarkable resistance to corrosion, establishing them as a dependable option for trenchless applications.

Q:How does ductile iron pipe perform in areas with high soil compaction?: Ductile iron pipe performs exceptionally well in areas with high soil compaction. One of the key advantages of ductile iron is its high strength and durability, which allows it to withstand heavy loads and pressures. In areas with compacted soil, where there is a greater likelihood of ground movement and settling, ductile iron pipe's superior structural integrity ensures that it remains intact and can effectively handle the stress. Additionally, ductile iron pipe has excellent resistance to corrosion. This is particularly important in areas with high soil compaction, as the compacted soil can often contain high levels of moisture or chemicals that may accelerate the corrosion process. Ductile iron's inherent resistance to corrosion helps maintain the pipe's integrity over time, even in challenging soil conditions. Another advantage of ductile iron pipe is its flexibility. This material has a high degree of flexibility, allowing it to absorb and distribute external loads more effectively. In areas with high soil compaction, where the ground may shift or settle, ductile iron's flexibility helps to minimize the risk of pipe failure or damage. Furthermore, ductile iron pipe has a smooth interior surface, which helps to improve its hydraulic performance. In areas with high soil compaction, where there may be limited space for proper compaction around the pipe, the smooth interior minimizes the risk of sediment buildup or clogging, ensuring efficient water flow. Overall, ductile iron pipe is an excellent choice for areas with high soil compaction. Its strength, corrosion resistance, flexibility, and hydraulic performance make it a reliable and durable option that can withstand the challenges posed by compacted soils.

Q:What is the weight of ductile iron pipes compared to other materials?: Ductile iron pipes are generally heavier compared to other materials commonly used in the construction industry. The weight of ductile iron pipes can vary depending on the specific size and dimensions, but they are typically heavier than materials such as PVC, HDPE, and steel pipes. This increased weight is primarily due to the dense nature of ductile iron, which provides durability, strength, and resistance to corrosion. However, the weight of ductile iron pipes also contributes to the challenges associated with transportation, installation, and handling, requiring appropriate equipment and techniques to ensure safe and efficient installation. Overall, while ductile iron pipes may be heavier than other materials, they offer numerous advantages in terms of longevity and performance in various applications.

Q:What is the internal lining used in ductile iron pipes?: The internal lining used in ductile iron pipes is typically a cement mortar lining. This lining is applied to the inside surface of the pipe to protect it from corrosion and abrasion. The cement mortar lining helps to extend the lifespan of the pipes and ensures they can withstand the harsh conditions of transporting water or sewage. Additionally, the lining also improves the hydraulic efficiency of the pipes by reducing friction and preventing the formation of biofilms or deposits on the inner surface. Overall, the use of cement mortar lining in ductile iron pipes is essential for maintaining the integrity and functionality of the infrastructure.

Q:Are ductile iron pipes suitable for installation in areas with high groundwater contamination and soil erosion?: Yes, ductile iron pipes are suitable for installation in areas with high groundwater contamination and soil erosion. Ductile iron pipes are known for their durability and resistance to corrosion, making them highly suitable for such conditions. Additionally, their ability to withstand external pressure and soil movement makes them a reliable choice in areas prone to soil erosion.

Q:Can ductile iron pipes be used for industrial applications?: Yes, ductile iron pipes can be used for industrial applications. Ductile iron is a type of cast iron that has significantly improved mechanical properties, including increased ductility and strength, compared to traditional cast iron. These qualities make ductile iron pipes highly suitable for industrial applications where durability, strength, and resistance to external forces are crucial. Industrial applications often involve high-pressure water or fluid transportation, and ductile iron pipes are designed to withstand such conditions. They have excellent tensile strength, which means they can resist deformation and fractures, making them ideal for handling heavy loads and withstanding significant internal and external pressures. Additionally, ductile iron pipes have excellent corrosion resistance properties, making them highly suitable for industrial applications where exposure to harsh chemicals or corrosive substances is common. Their resistance to corrosion ensures a longer service life and reduces maintenance costs associated with pipe replacement or repairs. Furthermore, ductile iron pipes are known for their versatility and adaptability. They can be easily connected and integrated into existing infrastructure, making them a preferred choice for industrial applications. Their high strength-to-weight ratio allows for easy handling and installation, which is essential in industrial settings. In conclusion, ductile iron pipes are suitable for industrial applications due to their improved mechanical properties, corrosion resistance, and versatility. Their ability to withstand high pressures, resist deformation, and adapt to existing infrastructure make them an excellent choice for various industrial applications.

Q:What is the external coating used in ductile iron pipes?: The external coating commonly used in ductile iron pipes is a protective layer made of either cement mortar or polyethylene.

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