DUCTILE IRON PIPES C Class 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: What are the requirements for the hydrostatic test of ductile iron pipes?
- Hydraulic test of pipeline segment length should not be more than 1 kilometers, the test pipe should be in full of water, no pressure under the condition of full immersion, soaking time of ductile cast iron pipe without mortar lining not less than 24 hours, a mortar lining the immersion of not less than 48 hours.
- Q: What is the exterior anticorrosion of nodular cast iron pipes?
- First clean the impurity on the surface of the pipe or fitting, and then sprayed zinc treatment (130g/m and asphalt paint coating fand) not less than 70 m
- Q: Are ductile iron pipes resistant to chemical attacks?
- Generally, ductile iron pipes exhibit resistance to chemical attacks. The high corrosion resistance of ductile iron makes it suitable for a wide range of applications, including water and wastewater systems. To further enhance their resistance to chemical attacks, ductile iron pipes are commonly lined with a protective coating such as cement mortar or epoxy. This lining acts as a barrier between the pipe material and corrosive substances, preventing any degradation of the iron. However, it is important to consider that the level of resistance may vary depending on the specific chemical being transported, as well as the concentration and temperature of the solution. Therefore, it is advisable to seek the guidance of experts or engineers to ensure the appropriateness of ductile iron pipes for specific chemical environments.
- Q: What is the typical wall thickness of ductile iron pipes?
- The typical wall thickness of ductile iron pipes can vary depending on the specific application and diameter of the pipe. However, in general, ductile iron pipes commonly have a wall thickness ranging from around 0.25 inches to 0.5 inches.
- Q: What is the maximum temperature that ductile iron pipe can handle?
- The maximum temperature that ductile iron pipe can handle depends on various factors such as the specific grade of ductile iron, the duration of exposure to high temperatures, and the presence of any external factors like corrosive environments. Generally, ductile iron pipes can handle temperatures up to 400-450 degrees Fahrenheit (204-232 degrees Celsius) for short durations. However, it is important to consult the manufacturer's specifications and guidelines to determine the specific maximum temperature limits for a particular grade of ductile iron pipe. Additionally, it is recommended to consider the effects of thermal expansion, potential loss of mechanical properties, and any additional protective measures that may be required at elevated temperatures.
- Q: How does ductile iron pipe perform in areas with high ground movement?
- Ductile iron pipe performs exceptionally well in areas with high ground movement. Its unique properties and design make it highly resistant to deformation and damage caused by ground shifting, settling, or seismic activities. The ductility of the material allows it to withstand significant stress and strain without fracturing or breaking. Unlike rigid materials such as cast iron or PVC, ductile iron pipe has the ability to flex and absorb ground movement, which prevents catastrophic failures and ensures the integrity of the pipeline system. Additionally, ductile iron pipe is manufactured with a variety of joint configurations that further enhance its performance in areas with high ground movement. Flexible joints, such as restrained joints or mechanical joints, accommodate the movement by allowing limited rotation and translation, minimizing the potential for pipe separation or joint failure. Furthermore, the robust construction of ductile iron pipe, which includes a thick wall thickness and a high tensile strength, provides additional protection against ground movement. This strength helps the pipe withstand external loads and forces induced by the ground, preventing deformation and maintaining its structural integrity. In conclusion, ductile iron pipe is an ideal choice for areas with high ground movement due to its exceptional ductility, joint flexibility, and robust construction. Its ability to absorb ground movement without compromising the pipeline system's functionality or safety makes it a reliable and durable option in such challenging environments.
- Q: Do ductile iron pipes require internal linings or coatings?
- Yes, ductile iron pipes typically require internal linings or coatings in order to prevent corrosion and extend their lifespan.
- Q: How are ductile iron pipes protected against root intrusion?
- Ductile iron pipes are protected against root intrusion through various methods and techniques. One commonly used approach is the application of root inhibitors or growth regulators. These chemicals are typically injected into the soil around the pipes, creating a barrier that inhibits root growth near the pipe. This helps prevent roots from penetrating the pipe and causing damage. Another method involves the use of physical barriers such as root barriers or sleeves. These are installed around the pipes to physically block the roots from accessing them. Root barriers are typically made of materials like plastic or metal and are designed to withstand the pressure exerted by growing roots. Additionally, regular maintenance practices such as periodic inspections and cleaning are essential in preventing root intrusion. By monitoring the condition of the pipes and removing any existing root masses, the risk of further root intrusion can be minimized. It is worth noting that preventative measures are more effective than reactive measures when it comes to protecting ductile iron pipes against root intrusion. Therefore, implementing proactive strategies during the installation phase, such as proper pipe bedding and alignment, can help reduce the likelihood of root intrusion in the first place. Overall, a combination of chemical treatments, physical barriers, and appropriate maintenance practices can significantly enhance the protection of ductile iron pipes against root intrusion, ensuring their long-term durability and functionality.
- Q: How do ductile iron pipes handle concentrated loads?
- Ductile iron pipes are highly resistant to concentrated loads due to their inherent strength and flexibility. They have the ability to distribute the load over a larger area, minimizing the risk of failure or damage. This makes them suitable for handling heavy loads and ensuring long-term durability in various applications.
- Q: Can ductile iron pipes be used in mining applications?
- Yes, ductile iron pipes can be used in mining applications. Ductile iron has high strength, durability, and resistance to corrosion, making it suitable for various underground mining operations. It can withstand the demanding conditions found in mining environments, including high pressure, abrasive materials, and harsh chemicals. Additionally, ductile iron pipes are cost-effective and have a long lifespan, making them a reliable choice for mining applications.
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DUCTILE IRON PIPES C Class DN300
- Ref Price:
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- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
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