DUCTILE IRON PIPE K8 DN300

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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 do ductile iron pipes handle traffic vibrations?: Ductile iron pipes are highly resistant to traffic vibrations due to their inherent strength and flexibility. These pipes have the ability to absorb and dissipate the energy generated by traffic vibrations, minimizing any potential damage or stress on the pipes. Additionally, their sturdy construction and high tensile strength make them less susceptible to cracking or breaking under the impact of traffic-induced vibrations. Overall, ductile iron pipes provide excellent performance and durability in handling traffic vibrations.

Q: Can ductile iron pipes be used for stormwater management systems?: Indeed, stormwater management systems can utilize ductile iron pipes. Renowned for their robustness and lastingness, ductile iron pipes prove fitting for diverse purposes, including stormwater management. These pipes exhibit resistance against corrosion and possess the ability to endure immense pressure, rendering them perfect for transporting stormwater runoff. Moreover, ductile iron pipes boast an extended lifespan, thereby minimizing the necessity for frequent replacements and upkeep. All in all, when it comes to stormwater management systems, ductile iron pipes serve as a dependable option.

Q: How do ductile iron pipes handle thermal cycling in industrial applications?: Ductile iron pipes are known for their exceptional ability to handle thermal cycling in industrial applications. Thermal cycling refers to the fluctuation in temperature that occurs during the operation of various industrial processes. These pipes are designed to withstand the stresses caused by thermal expansion and contraction, making them highly suitable for environments with significant temperature variations. One of the key characteristics of ductile iron pipes is their high thermal conductivity. This means that they can efficiently conduct heat away from the hot areas, minimizing the impact of thermal cycling. Additionally, ductile iron pipes have a low coefficient of thermal expansion, which means that they expand and contract at a slower rate compared to other materials. This helps to reduce the stresses imposed on the pipes during thermal cycling. Furthermore, ductile iron pipes have excellent mechanical properties, including high tensile strength and impact resistance. These properties enable the pipes to withstand the mechanical stresses that may arise due to thermal cycling. They can resist the formation of cracks or fractures, ensuring the integrity and longevity of the pipes in industrial applications. Moreover, ductile iron pipes have a high resistance to corrosion and oxidation. This is particularly important in industrial settings where the pipes may be exposed to aggressive chemicals or harsh environments. The corrosion resistance of ductile iron pipes ensures that they can withstand the corrosive effects of the process fluids and gases, even during thermal cycling. In summary, ductile iron pipes are well-equipped to handle thermal cycling in industrial applications. Their high thermal conductivity, low coefficient of thermal expansion, excellent mechanical properties, and resistance to corrosion make them a reliable choice for environments with significant temperature variations. These pipes can effectively withstand the stresses caused by thermal cycling, ensuring their durability and longevity in industrial settings.

Q: What is the wall thickness of K10 grade dn=400 ductile iron pipe?: Ductile iron pipe, class K10, DN400 theoretical weight table:Grade K10, DN400 ductile iron pipe wall thickness (T):9mm.Nominal diameter (DN) 400mm, its outer diameter (DE) 429mm.The approximate weight (kg) 29.5. of the crown of the socket;Straight part weight per meter (kg) 83.7.Total quality (kg) (length standard 6000mm) 532.Total mass (kg) (standard work length 5000mm) 448.The main characteristics of ductile iron pipes: ductile iron pipe is a kind of cast iron pipe. Having the nature of iron; 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: What is the expected internal lining material for ductile iron pipes?: Typically, the anticipated internal lining materials for ductile iron pipes are either cement mortar lining or polyethylene lining. Cement mortar lining serves as a protective layer on the inner surface of the ductile iron pipe, shielding it from corrosion and prolonging its lifespan. Conversely, polyethylene lining is a thermoplastic substance that possesses resistance against corrosion, abrasion, and chemicals, making it well-suited for situations involving aggressive substances or poor water quality. Depending on the project's specific requirements and conditions, both lining materials offer their own advantages and are commonly utilized within the industry.

Q: What is the expected roughness coefficient of ductile iron pipes?: The expected roughness coefficient of ductile iron pipes can vary depending on various factors such as pipe diameter, age, and condition. However, in general, the roughness coefficient for ductile iron pipes is typically around 0.01-0.015 mm. This value represents the average roughness of the internal surface of the pipe and is used in hydraulic calculations to determine the flow characteristics and pressure losses within the pipe network. It is important to note that these values are approximate and can vary based on specific pipe conditions and applications.

Q: Are ductile iron pipes suitable for sewer force mains?: Yes, ductile iron pipes are suitable for sewer force mains. Ductile iron is a type of cast iron that has a higher level of strength and flexibility compared to traditional cast iron pipes. This makes it ideal for applications where the pipes need to withstand high pressure and heavy loads, such as sewer force mains. Ductile iron pipes have excellent resistance to corrosion and are highly durable, which is crucial for sewer systems that are exposed to various corrosive substances and harsh environments. They also have the ability to absorb vibrations and shocks, reducing the risk of pipe failures caused by external forces. Furthermore, ductile iron pipes are known for their long service life, often lasting for more than 100 years. This makes them a cost-effective choice for sewer force mains, as they require minimal maintenance and replacement over their lifetime. Overall, ductile iron pipes offer a reliable and durable solution for sewer force mains, providing the necessary strength, flexibility, and resistance to corrosion to ensure efficient and long-lasting sewer systems.

Q: Can ductile iron pipes be used for gas distribution systems?: Yes, ductile iron pipes can be used for gas distribution systems. Ductile iron pipes are known for their strength and durability, making them suitable for carrying various types of fluids, including natural gas. These pipes have excellent corrosion resistance and can withstand the high pressure and stress typically associated with gas distribution systems. Additionally, ductile iron pipes are cost-effective and have a long lifespan, making them a reliable choice for gas distribution networks.

Q: Can ductile iron pipe be recycled?: Indeed, the recycling of ductile iron pipe is possible. Ductile iron, a variant of iron often employed in pipe production owing to its remarkable robustness and endurance, can be melted down when it reaches the conclusion of its productive lifespan. By utilizing the resultant molten iron, fresh items can be fashioned. This method of recycling not only aids in the preservation of precious natural resources but also lessens the necessity for raw materials and energy-intensive procedures utilized in the fabrication of novel pipes. Furthermore, the recycling of ductile iron pipe serves to diminish waste and contributes to a more sustainable and ecologically conscious approach to the advancement of infrastructure.

Q: Can ductile iron pipes be used for underground chemical transport systems?: Ductile iron pipes are commonly used for various applications due to their strength, durability, and resistance to corrosion. However, when it comes to underground chemical transport systems, there are certain factors that need to be considered before choosing ductile iron pipes as the suitable material. Firstly, the type of chemicals being transported should be evaluated. Ductile iron pipes are generally resistant to a wide range of chemicals, including acids, alkalis, and organic solvents. However, there are some chemicals that can corrode or react with the iron content of the pipes, leading to degradation and potential leakage. Therefore, it is crucial to assess the chemical compatibility and consult with chemical engineers or experts to determine whether ductile iron pipes are suitable for specific chemical transport applications. Secondly, the concentration and temperature of the chemicals should be taken into account. Elevated temperatures and high concentrations of certain chemicals can accelerate the corrosion process, potentially compromising the integrity of the pipes. It is essential to assess the operating conditions and ensure that the ductile iron pipes can withstand the chemical concentration and temperature levels. Additionally, the potential presence of abrasive or erosive chemicals should be considered. If the transported chemicals contain abrasive particles or have erosive properties, it may lead to increased wear and tear on the inner surface of the pipes, reducing their lifespan and potentially causing leaks. In such cases, alternative materials with higher resistance to abrasion or erosion may be more suitable. Lastly, it is important to comply with relevant regulations and standards. Different countries or regions may have specific requirements for underground chemical transport systems, including the choice of materials. It is necessary to ensure that ductile iron pipes meet the necessary standards and are approved for use in such applications. In conclusion, while ductile iron pipes have many desirable properties for various applications, including underground use, their suitability for chemical transport systems depends on several factors. Chemical compatibility, concentration and temperature levels, the presence of abrasive or erosive chemicals, and compliance with regulations should all be carefully evaluated before deciding to use ductile iron pipes for underground chemical transport systems. Consulting with experts in the field is highly recommended to ensure the safety and effectiveness of the chosen piping material.

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