DUCTILE IRON PIPE K8 DN500
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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: Are ductile iron pipes suitable for horizontal auger boring installations?
- Yes, ductile iron pipes are suitable for horizontal auger boring installations. Ductile iron pipes are known for their strength and durability, making them a reliable choice for various installation methods, including horizontal auger boring. This method involves drilling a horizontal hole underground and then pulling the pipe through the hole. Ductile iron pipes can withstand the forces involved in this process and maintain their structural integrity. Additionally, ductile iron pipes have high resistance to corrosion, which is crucial for underground installations where they may be exposed to moisture and other potentially damaging elements. Overall, ductile iron pipes are a suitable and widely used option for horizontal auger boring installations.
- Q: The difference between ductile cast iron pipe and machine-made cast iron pipe
- Different installation methods, ductile iron pipes are common flexible sealing ring, slide into the connection; the main drainage pipe is W and B type, clamp connection and mechanical connection, the inner gasket ring.
- Q: Are ductile iron pipes resistant to acid attacks?
- Generally, ductile iron pipes exhibit resistance to acid attacks. Ductile iron, a form of cast iron which has undergone magnesium treatment to enhance its strength and ductility, produces a more durable material capable of withstanding corrosive conditions, including acids. Nevertheless, it is crucial to acknowledge that the resistance level may vary depending on the specific acid type and concentration involved. In highly corrosive environments, where powerful acids or high concentrations are present, it may be necessary to implement additional protective measures such as applying a lining or coating to the pipes. Moreover, regular inspection and maintenance are vital to ensure the long-term durability and resistance of ductile iron pipes.
- Q: Can ductile iron pipes be used for geothermal systems?
- Yes, ductile iron pipes can be used for geothermal systems. Ductile iron is known for its strength, durability, and corrosion resistance, making it suitable for various applications including geothermal systems. These pipes can handle high temperatures and pressure fluctuations commonly found in geothermal systems. Additionally, ductile iron pipes have excellent thermal conductivity properties, allowing for efficient heat transfer between the geothermal fluid and the surrounding environment. Therefore, ductile iron pipes are a viable option for transporting geothermal fluids in geothermal systems.
- Q: How can the ductile iron pipe depress the elbow so as to prevent it from being opened?
- Elbow materials are cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, nonferrous metals and plastics.
- Q: Can the underground cast iron pipes be connected with clamps to form buttress?
- Best not to, because the use of clamp connection way to connect the poor integrity of the pipeline, the base treatment is not in place or uneven settlement, it is easy to produce deformation, resulting in pipe bending deformation, easily leaked from the junction.
- Q: How do ductile iron pipes handle ground settlement near construction sites?
- Ductile iron pipes are highly resilient and can withstand ground settlement near construction sites. Due to their flexible nature, these pipes can accommodate small movements and settlement without incurring significant damage or failure. The ductility of the material allows the pipes to bend and adjust to the changing ground conditions, ensuring their integrity and minimizing the risk of leaks or breakage. Additionally, the strong and durable properties of ductile iron make it a reliable choice for underground infrastructure, providing long-term stability even in challenging environments.
- Q: Can ductile iron pipes be used for road and highway drainage?
- Yes, ductile iron pipes can be used for road and highway drainage. Ductile iron pipes have excellent strength and durability, making them suitable for handling the heavy loads and traffic associated with road and highway drainage systems. Additionally, they have high resistance to corrosion and provide a smooth internal surface, minimizing the chances of blockages and ensuring efficient water flow.
- Q: Ductile iron and gray iron is what are the advantages and disadvantages of it
- Comparison of nodular cast iron and cast steelThe strength of nodular cast iron is comparable to that of cast steel. Ductile iron has higher yield strength, the lowest yield strength is 40K, while the yield strength of cast steel is only 36k. In most municipal applications, such as water, brine, steam, ductile iron has more corrosion resistance and oxidation resistance than cast steel. Because of the spheroidal graphite microstructure of nodular cast iron, nodular cast iron is superior to cast steel in reducing vibration ability, so it is more beneficial to reduce stress. An important reason for choosing ductile iron is that ductile iron costs less than cast steel. The low cost of ductile iron makes this material more popular, more efficient and less costly for ductile iron.
- Q: How are ductile iron pipes inspected for quality control?
- To guarantee compliance with industry standards, ductile iron pipes undergo a series of rigorous tests and inspections for quality control. Trained inspectors conduct visual inspections, carefully examining the pipes for visible defects like cracks, pits, or surface irregularities. This process aims to identify any visual flaws that could compromise the overall quality of the pipes. Dimensional inspection is another crucial quality control measure. Specialized tools and equipment are used to measure the pipes' dimensions, including diameter, wall thickness, and length. By comparing these measurements to specified tolerances, any deviations can be detected, and necessary corrective actions can be taken. Hydrostatic pressure testing is an important step in quality control. The pipes are subjected to internal pressure higher than their intended operating pressure to ensure they can withstand the required pressure without any leakage or failure. This test involves filling the pipes with water and gradually increasing the pressure while closely monitoring for any signs of leakage or deformation. Furthermore, mechanical tests such as tensile strength testing and impact testing are conducted to evaluate the pipes' mechanical properties. Controlled forces or impacts are applied to the pipes, and their response is measured. This allows for the assessment of the pipes' strength, toughness, and durability, ensuring they meet the necessary requirements. Metallurgical examinations are also carried out to analyze the microstructure of the ductile iron pipes. Samples are taken from the pipes, and microscopy techniques are used to examine the grain structure, phase distribution, and any potential defects at a microscopic level. This process helps identify any issues that may not be visible to the naked eye but could affect the overall quality of the pipes. Overall, the inspection process for ductile iron pipes encompasses a combination of visual, dimensional, hydrostatic, mechanical, and metallurgical tests. These quality control measures ensure that the pipes meet the required standards, providing reliable and durable infrastructure for various applications.
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DUCTILE IRON PIPE K8 DN500
- Ref Price:
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- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
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- Supply Capability:
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