DUCTILE IRON PIPES C Class DN350
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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 installation in areas with high groundwater salinity?
- Yes, ductile iron pipes are generally suitable for installation in areas with high groundwater salinity. Ductile iron is known for its corrosion resistance, making it a preferred choice in such environments. However, it is crucial to consider the specific salinity levels and consult with experts to ensure proper pipe coating and protection measures are in place to prevent any potential corrosion or degradation.
- Q: How do ductile iron pipes handle pressure surges in pumping stations?
- Ductile iron pipes excel at effectively managing pressure surges in pumping stations. The exceptional strength and flexibility of ductile iron make it an excellent choice for withstanding sudden increases in pressure that can occur during pump start-up or shutdown. One of the standout qualities of ductile iron pipes is their remarkable capacity to absorb and distribute energy. When a pressure surge arises, these pipes can absorb the excess pressure and evenly distribute it throughout the pipe network. This capability greatly reduces the impact of the surge and safeguards against potential damage to the pipes or pumping station. Furthermore, ductile iron pipes possess a high resistance to impact and stress, which further bolsters their ability to handle pressure surges. Their manufacturing process imparts a unique strength and durability that allows them to endure the forces exerted during pressure fluctuations without significant deformation or failure. Moreover, ductile iron pipes boast a smooth internal surface that minimizes friction and turbulence within the pipe network. This smooth flow characteristic helps mitigate the effects of pressure surges by ensuring efficient movement of water without placing additional stress on the pipes. In conclusion, ductile iron pipes are meticulously engineered to handle pressure surges in pumping stations. They excel at absorbing and dissipating excess pressure, enduring impact and stress, and promoting smooth flow. Their robustness and reliability make them the ideal choice for applications where pressure fluctuations are prevalent, guaranteeing the longevity and efficiency of pumping infrastructure.
- Q: What are the common methods for leak detection in ductile iron pipes?
- There are several common methods for leak detection in ductile iron pipes. These methods are widely used by professionals in the field to identify and locate leaks in a timely manner. 1. Acoustic Leak Detection: This method involves using specialized equipment to listen for the sound of water escaping from the pipe. The equipment detects the sound of the leak and helps pinpoint its location. This method is effective for both pressurized and non-pressurized pipes. 2. Visual Inspection: Visual inspection involves physically inspecting the pipe system for any visible signs of leaks such as water stains, wet spots, or puddles. This method is relatively simple and can be effective for detecting visible leaks in accessible areas. 3. Pressure Testing: Pressure testing involves pressurizing the pipe system and monitoring for any drops in pressure. If there is a leak, the pressure will drop, indicating its presence. This method is commonly used during installation or maintenance and can help identify leaks in inaccessible areas. 4. Infrared Thermography: Infrared cameras are used to detect leaks by measuring temperature differences. Water escaping from a pipe can create a temperature difference, which can be detected by the camera. This method is particularly effective for identifying hidden leaks behind walls or underground. 5. Tracer Gas Testing: Tracer gas testing involves injecting a specific gas, such as helium or hydrogen, into the pipe system. If there is a leak, the gas will escape and can be detected using specialized equipment. This method is highly sensitive and can locate even small leaks. 6. Soil Gas Monitoring: This method involves monitoring the soil around the pipe for the presence of gases emitted by leaking water. By analyzing the soil gas composition, professionals can determine the location of the leak. It is important to note that the choice of method may vary depending on the specific circumstances, such as the size of the pipe system, accessibility, and severity of the leak. In some cases, a combination of methods may be used to ensure accurate and comprehensive leak detection.
- Q: Can ductile iron pipes be used for pressure reducing stations?
- Yes, ductile iron pipes can be used for pressure reducing stations. Ductile iron pipes have high strength and durability, making them suitable for handling high-pressure systems. Additionally, their corrosion resistance properties make them a reliable choice for long-term use in pressure reducing stations.
- Q: What is the K9 standard pressure for ductile iron pipes?
- Ductile weakness: ductile cast iron pipes connected by human factors such as the operation level of responsibility, influence, construction not convenient. The advantages of PE PE PE pipe has good corrosion resistance and its anti inorganic performance than that of the metal pipe is much stronger in the buried without corrosion, construction convenient. Small diameter PE pipe in the price performance ratio is better than that of steel and ductile iron.PE tube have disadvantages: benzene, gasoline, carbon tetrachloride and other organic solvents have certain effect on pe. If the organic solvent is infiltrated into the polyethylene, the swelling will occur, and its physical properties will be decreased. Its pressure resistance and temperature resistance are poor.
- Q: How does ductile iron pipe handle changes in pipe diameter or size?
- Ductile iron pipe is capable of handling changes in pipe diameter or size quite effectively. It has the advantage of being highly flexible and resistant to deformation, allowing it to accommodate variations in pipe dimensions without compromising its structural integrity. This flexibility is particularly beneficial in situations where there are thermal expansions or contractions, ground movement, or other external factors affecting the pipe's diameter. Overall, ductile iron pipe's ability to handle changes in size makes it a reliable and durable choice for various piping applications.
- Q: Are ductile iron pipes resistant to chloride-induced corrosion?
- Indeed, chloride-induced corrosion can be effectively resisted by ductile iron pipes. Ductile iron, a variant of cast iron fortified with magnesium for enhanced malleability and crack resistance, possesses a ferritic microstructure that grants exceptional resilience against chloride-induced corrosion. The interaction between chloride ions in water or soil and the metal surface can lead to the development of corrosion byproducts like rust. Nonetheless, the inclusion of magnesium in ductile iron forms a protective coating, preventing the infiltration of chloride ions and thus impeding corrosion. Consequently, ductile iron pipes are well-suited for a broad spectrum of applications, including water supply and sewerage systems, wherein exposure to chlorides is prevalent.
- Q: What are the different joint types available for ductile iron pipes?
- There are several different joint types available for ductile iron pipes. These joints play a crucial role in ensuring the integrity and reliability of the pipeline system. 1. Push-on Joint: This is the most common type of joint used for ductile iron pipes. It involves a rubber gasket that is placed inside the bell end of the pipe, and the spigot end is then pushed into the bell, creating a tight seal. This joint is quick and easy to assemble and provides excellent resistance to soil movement and water pressure. 2. Mechanical Joint: This joint involves a gland and follower that are tightened around the spigot end of the pipe using bolts and nuts. The mechanical joint provides a strong and durable connection and is commonly used for larger diameter pipes or in applications where higher pressure or thrust loads are expected. 3. Flanged Joint: Flanged joints are used when the pipes need to be connected to other components, such as valves or fittings. The ends of the pipes are machined and fitted with flanges that are bolted together using gaskets to create a secure connection. Flanged joints are often used in industrial applications or where frequent disassembly is required. 4. Restrained Joint: Restrained joints are designed to withstand higher thrust forces and prevent the pipe from separating or pulling apart. They typically utilize a combination of mechanical joint components, such as bolts and glands, along with additional restraining elements like welded or bolted-on restraints. These joints are commonly used in high-pressure applications or where the pipeline is subjected to significant external forces. It is important to select the appropriate joint type based on factors such as pipeline design, operating conditions, and installation requirements. Consulting with a knowledgeable engineer or pipe manufacturer can help determine the most suitable joint type for a specific ductile iron pipe application.
- Q: Ductile iron pipe is flexible pipe or rigid pipe
- Steel tubes, of course, because ductile iron pipes are not easily deformed.
- 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 DN350
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
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