DUCTILE IRON PIPE C Class 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: Do ductile iron pipes require internal lining for potable water applications?
- Yes, ductile iron pipes do require internal lining for potable water applications. This is because the iron used in these pipes can react with the water and potentially contaminate it. Internal lining acts as a barrier between the water and the iron, preventing any chemical reactions and ensuring the water remains safe for consumption.
- Q: Can ductile iron pipes be used in areas with high soil acidity?
- To ensure the durability and performance of ductile iron pipes in areas with high soil acidity, certain precautions should be taken. Ductile iron pipes are renowned for their strength, durability, and resistance to corrosion, making them suitable for various soil conditions, including those with high acidity. However, the presence of high soil acidity can still pose a potential risk to ductile iron pipes over time. Acidic soils can accelerate the corrosion process, leading to the degradation of the pipe material. To mitigate this risk, the following measures can be implemented: 1. Protective Coatings: Applying protective coatings, such as epoxy or polyethylene, to the outer surface of the pipes adds an extra layer of defense against soil acidity. These coatings act as a barrier, preventing direct contact between the pipe and the corrosive soil. 2. pH Adjustment: Adjusting the pH levels of the soil can help reduce its acidity. This can be achieved by incorporating lime or other neutralizing agents into the soil, creating a more favorable environment for the ductile iron pipes. 3. Cathodic Protection: Employing cathodic protection systems is an effective method to prevent corrosion in ductile iron pipes. This technique involves utilizing sacrificial anodes or impressed current systems to generate a protective electrical current that counteracts the corrosive effects of the soil. 4. Regular Inspections: Conducting periodic inspections is crucial to monitor the condition of the ductile iron pipes in high soil acidity areas. This enables early detection of any corrosion or degradation, facilitating timely repairs or replacements. By implementing these measures, ductile iron pipes can be effectively utilized in areas with high soil acidity, guaranteeing long-term performance and minimizing the risks associated with corrosive soils. However, it is advisable to consult experts or engineers familiar with local soil conditions and project requirements to determine the most suitable materials and protective measures.
- Q: Can ductile iron pipe be used for sewer and wastewater systems?
- Indeed, sewer and wastewater systems can make use of ductile iron pipe. Ductile iron, a variant of cast iron, boasts enhanced attributes such as heightened durability, strength, and flexibility. These characteristics render it apt for subterranean usage, encompassing sewer and wastewater systems. Ductile iron pipes possess resistance against corrosion and are capable of enduring high-pressure circumstances, rendering them perfect for the conveyance of sewage and wastewater. Furthermore, ductile iron pipes boast an extended lifespan and necessitate minimal upkeep, thereby making them a financially prudent alternative for sewer and wastewater infrastructure.
- Q: Are ductile iron pipes resistant to chemical attacks?
- Yes, ductile iron pipes are generally resistant to chemical attacks. They have a protective lining that prevents the corrosive effects of various chemicals, making them suitable for transporting a wide range of liquids including water, sewage, and industrial waste.
- Q: How does ductile iron pipe handle soil movement?
- Ductile iron pipe is known for its excellent strength and durability, making it highly capable of handling soil movement. When the soil around the pipe shifts or settles, ductile iron pipes have the ability to flex and accommodate such movement without compromising their structural integrity. One of the key features that allows ductile iron pipes to handle soil movement is their inherent ability to withstand bending and stretching. They possess a high degree of flexibility, allowing them to adjust to ground shifts and settle without breaking or cracking. This flexibility is due to the unique material properties of ductile iron, which is a type of cast iron that has been treated with magnesium to enhance its strength and elasticity. Moreover, ductile iron pipes are designed with a thick-walled construction, which adds to their resistance against soil movement. This robust construction helps distribute the forces exerted by the shifting soil, minimizing the impact on the pipe and preventing any significant damage. In addition, ductile iron pipes are usually installed with appropriate bedding and backfill materials to provide additional support and stability. This includes using compacted soil or engineered granular materials around the pipe, which helps to evenly distribute the load and reduce the potential for soil movement. Overall, ductile iron pipe is an ideal choice for areas with high soil movement, such as regions with expansive or unstable soils. Its flexibility, strength, and proper installation techniques make it capable of handling the challenges posed by soil movement, ensuring long-lasting and reliable performance in various applications.
- Q: What is the expected pressure rating for ductile iron pipes?
- The expected pressure rating for ductile iron pipes can vary depending on various factors such as the pipe diameter, wall thickness, and the specific application it is being used for. However, generally speaking, ductile iron pipes are designed and manufactured to withstand high-pressure conditions. They are commonly used in water and wastewater systems, where they can typically handle pressures ranging from 150 psi (pounds per square inch) up to 350 psi or even higher. It is important to consult the manufacturer's specifications or relevant industry standards for specific pressure ratings based on the pipe's size and application to ensure safe and reliable operation.
- Q: What does ductile iron pipe "K" mean?
- K means wall thickness registration, general water supply and drainage, now China uses K9, and some countries in South America, such as Brazil, use K7.The wall is thick =k (DN/1000+0.5), such as K9's DN500 tube, with a wall thickness of =9* (500/1000+0.5) =9mm
- Q: What is the expected abrasion resistance of ductile iron pipes?
- The expected abrasion resistance of ductile iron pipes is generally high. Ductile iron pipes are known for their durability and strength, making them suitable for various applications, including transporting water, sewage, and other fluids. The material composition of ductile iron pipes, which includes a significant amount of carbon and silicon, contributes to their abrasion resistance. Ductile iron pipes are designed to withstand the abrasive forces that can occur during the transportation of fluids. They have a smooth internal surface that reduces friction and minimizes the potential for abrasion. Additionally, the material's inherent toughness and resistance to wear and tear make ductile iron pipes less prone to damage caused by abrasive particles or debris in the flowing fluid. However, it is important to note that the expected abrasion resistance of ductile iron pipes can also depend on various factors such as the velocity and nature of the fluid being transported, the presence of corrosive substances, and the installation conditions. In some cases, additional protective measures such as linings or coatings may be required to enhance the pipes' resistance to abrasion. Overall, ductile iron pipes are known for their excellent abrasion resistance, but it is always advisable to consider specific application requirements and consult with experts to ensure the appropriate selection and installation of the pipes for optimal performance and longevity.
- Q: Can ductile iron pipes be used for cooling water systems?
- Yes, ductile iron pipes can be used for cooling water systems. Ductile iron pipes are known for their durability, strength, and corrosion resistance, making them suitable for a wide range of applications, including cooling water systems. These pipes have the capacity to handle high pressure and temperature fluctuations, making them ideal for circulating and transporting cooling water. Additionally, ductile iron pipes have a smooth internal surface that reduces friction and minimizes the risk of scaling or clogging, ensuring efficient flow of the cooling water. Therefore, ductile iron pipes can be a reliable and efficient choice for cooling water systems.
- Q: Can ductile iron pipes be used for rainwater harvesting systems?
- Yes, ductile iron pipes can be used for rainwater harvesting systems. Ductile iron pipes are known for their durability and strength, making them suitable for various applications, including rainwater collection and storage. They can effectively transport rainwater from collection points to storage tanks, ensuring a reliable and efficient rainwater harvesting system.
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DUCTILE IRON PIPE C Class DN150
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
OKorder Financial Service
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