DUCTILE IRON PIPES C Class DN600
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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: Ductile iron pipe in the direction of it?
- The utility model is mainly used for conveying water, and is an ideal choice for tap water pipes.
- Q: Are ductile iron pipes resistant to impact damage?
- Ductile iron pipes are known for their exceptional strength and durability, making them highly resistant to impact damage. Due to their unique composition, which includes a higher percentage of carbon and silicon, ductile iron pipes possess excellent toughness and flexibility. This allows them to withstand external forces and impacts, such as heavy construction equipment or accidental impacts during installation or maintenance activities. Additionally, ductile iron pipes have a high resistance to cracking and fracturing, further enhancing their ability to withstand impact damage. However, it is important to note that while ductile iron pipes are highly resistant to impact damage, they are not completely immune. Extreme or repeated impacts may still cause damage, albeit to a lesser extent than other types of pipes. Regular inspections and maintenance are crucial to identifying and addressing any potential impact damage to ensure the long-term integrity and performance of ductile iron pipes.
- Q: Are ductile iron pipes resistant to abrasion?
- Yes, ductile iron pipes are highly resistant to abrasion.
- Q: Can ductile iron pipes be used in areas with high soil salinity?
- Indeed, areas with high soil salinity can accommodate the use of ductile iron pipes. These pipes possess notable resistance to corrosion, rendering them compatible with different soil conditions, even those with elevated salinity levels. Usually, these pipes are coated with a safeguarding layer, such as polyethylene or zinc, which bolsters their capacity to ward off corrosion caused by saltwater or saline soils. Furthermore, employing appropriate installation methods, such as meticulous backfilling and soil compaction around the pipes, can effectively mitigate the potential consequences of high soil salinity on the durability and effectiveness of ductile iron pipes.
- Q: What are the different types of joints used with ductile iron pipe?
- There are several different types of joints that can be used with ductile iron pipe. These joints are designed to provide a secure and watertight connection between sections of pipe. Some of the most common types of joints used with ductile iron pipe include: 1. Mechanical Joint: This is the most commonly used joint for ductile iron pipe. It consists of a gland and a follower which are tightened using bolts and nuts to provide a tight seal. Mechanical joints are flexible and can accommodate slight misalignments. 2. Push-On Joint: This type of joint does not require any bolts or nuts. It is designed to be easily assembled by simply pushing the pipe sections together. A rubber gasket is used to provide a watertight seal. 3. Restrained Joint: Restrained joints are specifically designed for applications where pipe movement needs to be limited. These joints typically include a mechanical joint with additional features such as thrust collars or tie rods to prevent axial movement. 4. Flanged Joint: Flanged joints are commonly used for larger diameter pipes. The pipe ends are flanged and then bolted together, with a gasket placed in between to create a leak-proof connection. Flanged joints are typically used in applications where frequent disassembly and reassembly may be required. 5. Welded Joint: In some cases, ductile iron pipe sections may be welded together using a fusion welding process. This creates a permanent and strong joint. Welded joints are commonly used in high-pressure applications where a reliable and durable connection is required. It is important to note that the choice of joint type will depend on the specific requirements of the project, such as the pipe diameter, pressure rating, and the nature of the fluid being transported. Additionally, local regulations and standards may also dictate the type of joint that should be used in certain applications.
- Q: What are the common methods for flow control in ductile iron pipes?
- Ductile iron pipes offer various options for flow control. Among them, valves are commonly used. Valves enable the regulation of water or other fluids flowing through the pipes. They can be either manually operated or automated, depending on the system's specific needs. Flow restrictors or flow limiters represent another method for controlling flow in ductile iron pipes. These devices are installed in the pipes to reduce the flow rate and ensure that the system operates within its intended parameters. Flow restrictors are particularly beneficial in situations where flow control is necessary to prevent damage or optimize system efficiency. Pressure regulators also contribute to flow control in ductile iron pipes. By maintaining a specific pressure level within the system, these devices help prevent excessive pressure that can lead to pipe bursts or other forms of damage. Furthermore, pressure regulators aid in maintaining a consistent pressure throughout the system, ensuring predictable and controlled flow. Flow meters provide yet another means of achieving flow control. These devices are installed in the pipes to measure the rate at which fluid passes through them. By monitoring the flow rate, operators can adjust valves or other flow control devices to maintain flow within the desired range. Flow meters are especially valuable in applications where accurate flow measurement is critical, such as industrial processes or water distribution systems. In conclusion, flow control in ductile iron pipes can be achieved through the use of valves, flow restrictors, pressure regulators, and flow meters. These methods can be combined or used individually, depending on the specific requirements of the system.
- Q: Can centrifugal cast iron pipe be galvanized or coated with asphalt which is good for corrosion prevention?
- By spraying zinc and epoxy coal tar coating of ductile iron pipe wall (or epoxy resin paint, polyurethane, etc.) wall using Portland cement (or epoxy powder, epoxy, polyurethane, ceramics etc.) wall coating can effectively active substances in soil and the formation of an insoluble zinc salt protection tube, the internal coating can inhibit corrosion of pipe body fluid medium.
- Q: How can stainless steel pipes and ductile iron pipes be joined?
- The ductile iron pipe is connected to the ball milling cast iron pipe by spigot and socket
- Q: How does ductile iron pipe perform in extreme weather conditions?
- Ductile iron pipes are known for their exceptional performance in extreme weather conditions. These pipes exhibit a high level of durability, resistance, and flexibility, making them suitable for withstanding harsh weather conditions such as extreme temperatures, heavy rain, snow, and even earthquakes. One of the key attributes of ductile iron is its ability to resist damage from freezing temperatures. Unlike other materials, ductile iron pipes have a low coefficient of thermal expansion, enabling them to withstand the expansion and contraction that occurs during freeze-thaw cycles without cracking or breaking. This ensures the pipes remain intact and continue to perform optimally even in frigid conditions. Additionally, ductile iron pipes have excellent corrosion resistance, making them highly resilient against the corrosive effects of extreme weather. They are protected by a durable zinc coating, which acts as a barrier against rust and other forms of corrosion. This coating, combined with the inherent strength of ductile iron, makes these pipes highly resistant to the corrosive effects of rain, snow, and moisture. Moreover, ductile iron pipes possess superior flexibility, allowing them to accommodate ground movement and seismic activity. In regions prone to earthquakes or shifting soil, these pipes can absorb the stress and strain without fracturing, ensuring continuous water supply and sewerage services even in the most challenging weather conditions. Overall, ductile iron pipes excel in extreme weather conditions due to their durability, resistance to freezing, corrosion, and flexibility. Their ability to withstand the elements ensures uninterrupted water supply and sewage systems, providing reliability and peace of mind to utilities and communities even in the harshest environments.
- Q: How do ductile iron pipes perform in freeze-thaw cycles?
- Ductile iron pipes demonstrate exceptional performance in freeze-thaw cycles due to their material properties. With high tensile strength and excellent impact resistance, ductile iron is highly resistant to the stresses caused by freezing and thawing. Unlike other materials, these pipes can withstand the expansion and contraction during temperature changes without cracking or breaking. One of the primary reasons for the success of ductile iron pipes in freeze-thaw conditions is their capacity to absorb and dissipate stresses. The material's high ductility allows for slight deformation under stress, releasing pressure and preventing pipe damage. This characteristic ensures that the pipes can endure repeated freezing and thawing cycles without compromising their structural integrity. Furthermore, ductile iron pipes feature a durable and protective coating, such as cement mortar lining or polyethylene encasement, which further enhances their resistance to freeze-thaw cycles. These coatings offer an extra layer of protection, preventing direct contact between water and the iron and reducing the risk of corrosion. Moreover, ductile iron pipes have an extended service life, often exceeding 100 years, thanks to their inherent strength and resistance to various environmental factors, including freeze-thaw cycles. The pipes' ability to endure these cycles without significant damage ensures the reliability and durability of water distribution systems, even in regions prone to freezing temperatures. In conclusion, ductile iron pipes are highly dependable and excel in freeze-thaw cycles. Their high tensile strength, impact resistance, capacity to absorb stresses, and protective coatings make them the preferred choice for water distribution systems in areas with harsh winter conditions.
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DUCTILE IRON PIPES C Class DN600
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
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