DUCTILE IRON PIPES K8 DN200

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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) 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 road and highway crossings?: Yes, ductile iron pipe can be used for road and highway crossings. Ductile iron is a strong and durable material that is well-suited for underground infrastructure projects, including road and highway crossings. It provides excellent resistance to heavy loads, corrosion, and external forces, making it suitable for withstanding the traffic and environmental conditions associated with road and highway crossings. Additionally, ductile iron pipe is available in various sizes and strengths, allowing for customization based on the specific requirements of the crossing. Proper installation techniques and adherence to relevant industry standards are essential to ensure the longevity and performance of ductile iron pipes in road and highway crossings.

Q:Can ductile iron pipes be used for bridge piers?: Yes, ductile iron pipes can be used for bridge piers. Ductile iron pipes are known for their high strength and durability, making them suitable for various applications, including bridge construction. They have excellent resistance to corrosion and can withstand heavy loads, making them a reliable choice for supporting bridge piers. Additionally, ductile iron pipes offer ease of installation and maintenance, which can be advantageous in bridge construction projects. However, it is important to consider the specific requirements and design specifications of the bridge before selecting ductile iron pipes as the material for bridge piers. Proper engineering evaluation and consideration of factors such as load capacity, soil conditions, and environmental factors are essential to ensure the suitability and safety of using ductile iron pipes for bridge piers.

Q:What are the environmental benefits of using ductile iron pipe?: There are several environmental benefits associated with using ductile iron pipe in various applications. Firstly, ductile iron is a highly durable material that can withstand harsh environmental conditions and has a long lifespan. This means that ductile iron pipes require less frequent replacements compared to other pipe materials, reducing the need for resource-intensive manufacturing processes and minimizing the disposal of old pipes. Secondly, ductile iron pipes have excellent corrosion resistance properties, which reduces the risk of leaks and pipe failures. This not only prevents potential water contamination but also minimizes the wastage of water resources. Additionally, ductile iron is a recyclable material. At the end of its useful life, ductile iron pipes can be melted down and used to manufacture new products, reducing the demand for virgin materials and conserving natural resources. Furthermore, the manufacturing process of ductile iron pipe has improved significantly over the years, resulting in reduced energy consumption and emissions. Today, many manufacturers use energy-efficient technologies and practices to produce ductile iron pipes, contributing to a lower carbon footprint and reduced air pollution. Lastly, ductile iron pipes have a smooth internal surface that minimizes friction and allows for efficient water flow. This can lead to energy savings in pumping and distribution systems, as less energy is required to transport water through the pipeline network. Overall, using ductile iron pipe can have a positive impact on the environment by reducing waste, conserving resources, minimizing pollution, and improving energy efficiency in water distribution systems.

Q:What is the expected hydraulic efficiency of ductile iron pipes?: Several factors, including pipe diameter, roughness of the pipe surface, flow rate, and length of the pipe, can affect the expected hydraulic efficiency of ductile iron pipes. However, it is generally acknowledged that ductile iron pipes exhibit exceptional hydraulic efficiency. Ductile iron pipes possess an inner surface that is smooth, thereby reducing frictional losses and facilitating efficient water flow. The smoothness of the pipe surface serves to minimize energy losses caused by turbulence and resistance. Furthermore, ductile iron pipes are engineered to maintain a consistent and uniform internal diameter, which further enhances their hydraulic efficiency. Research has demonstrated that hydraulic efficiencies of ductile iron pipes can range from 85% to 95%. This indicates that a significant portion of the energy inputted into the system is effectively transferred to the water, resulting in minimal losses. It should be noted that the hydraulic efficiency of ductile iron pipes can be influenced by factors like corrosion, scaling, and sediment accumulation over time. Regular maintenance and appropriate cleaning procedures can help preserve the hydraulic efficiency of ductile iron pipes. In summary, ductile iron pipes are widely regarded for their high hydraulic performance and are extensively utilized in water distribution systems due to their ability to convey water with minimal energy losses.

Q:Can ductile iron pipes be used for geothermal energy systems?: Certainly, geothermal energy systems can utilize ductile iron pipes. Ductile iron, being a robust and long-lasting substance, possesses the capacity to endure the frequently encountered elevated temperatures and pressures in geothermal energy systems. Its ability to resist corrosion and exhibit high tensile strength renders it a perfect selection for conveying geothermal fluids. Furthermore, the ease of joining ductile iron pipes permits flexibility and adaptability during the design and installation phases. All in all, ductile iron pipes prove to be a trustworthy and economically viable alternative for geothermal energy systems.

Q:Can ductile iron pipe be used for oil and gas pipelines?: Yes, ductile iron pipe can be used for oil and gas pipelines. Ductile iron pipe is known for its strength, durability, and corrosion resistance, making it suitable for a variety of applications including oil and gas transportation. It has been widely used in the industry for many years and has proven to be a reliable choice for pipeline systems. Additionally, ductile iron pipe can handle high pressure and heavy loads, making it suitable for the demands of oil and gas pipelines. However, it is important to ensure that the specific grade and specifications of the ductile iron pipe meet the requirements of the particular oil and gas project to ensure optimal performance and longevity.

Q:What is the acceptance of cast iron pipe material?: Specific acceptance, first of all in line with national standards, followed by the provisions of the contract, and then the project requirements. General contract and drawings will have the requirements and standards of pipe. I hope I can help you.

Q:What are the different methods for tapping ductile iron pipe?: There are several methods for tapping ductile iron pipe, including hot tapping, mechanical tapping, and electrofusion tapping. Hot tapping involves drilling into the pipe while it is still in service and creating a connection without interrupting the flow. Mechanical tapping uses mechanical equipment to create a threaded or grooved connection on the pipe. Electrofusion tapping uses an electrofusion saddle to create a connection by fusing a fitting onto the pipe.

Q:Can ductile iron pipe be used for compressed air systems?: Yes, ductile iron pipe can be used for compressed air systems. Ductile iron pipe is known for its strength, durability, and resistance to cracking, making it suitable for various applications including compressed air systems. It is capable of withstanding high pressure and is less likely to corrode or rust compared to other materials. However, it is important to ensure that the ductile iron pipe is properly sized and installed to handle the specific requirements of the compressed air system. Additionally, regular maintenance and inspection should be conducted to prevent any potential issues or damages.

Q:What are the advantages of using ductile iron pipe?: Using ductile iron pipe in various applications offers several benefits. Firstly, ductile iron pipe is renowned for its strength and durability. It possesses higher tensile and yield strengths compared to other pipe materials, making it highly resistant to cracking, bending, and breaking. This exceptional strength enables the pipe to withstand high-pressure and heavy-load conditions, making it an ideal choice for applications such as water and sewage systems, oil and gas pipelines, and industrial piping. Secondly, ductile iron pipe exhibits excellent corrosion resistance. It is coated with a protective layer, typically zinc or epoxy, which prevents rusting and corrosion. This coating ensures a longer lifespan for the pipe, even in harsh environments or when transporting corrosive fluids. Another advantage of ductile iron pipe lies in its flexibility. Unlike rigid pipes, ductile iron pipes possess a certain level of flexibility, enabling them to endure ground movements and settle without fracturing. This flexibility proves particularly advantageous in areas prone to earthquakes or soil settlements. Additionally, ductile iron pipe boasts a smooth inner surface, minimizing flow resistance and enhancing fluid transportation efficiency. It also reduces the likelihood of sediment accumulation or corrosion within the pipe, resulting in improved flow rates and decreased maintenance requirements. Furthermore, ductile iron pipe proves cost-effective in the long run. Although it may entail higher initial costs compared to other pipe materials, its durability and minimal maintenance needs make it a cost-effective choice over time. The extended lifespan of ductile iron pipe reduces the necessity for frequent replacements and repairs, contributing to lower overall life-cycle expenses. Lastly, ductile iron pipe exhibits environmental friendliness. It is manufactured using recycled materials, and its extended lifespan diminishes the need for frequent replacements, thereby reducing the carbon footprint associated with manufacturing and transportation. In conclusion, the utilization of ductile iron pipe offers numerous advantages, including exceptional strength, corrosion resistance, flexibility, smooth inner surface, cost-effectiveness, and environmental friendliness. These qualities establish it as a reliable and preferred option for various applications across diverse industries.

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