DUCTILE IRON PIPE C Class DN125
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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 is the relationship between the installation direction of the ductile iron pipe and the direction of flow?
- The use of cast iron by adding more than 18 nodularizer, after centrifugal ductile cast iron machine high speed centrifugal cast pipe, called "ductile" (Ductile Cast Iron Pipes), referred to as ball pipe, ductile iron pipe and ductile iron pipe etc.. The utility model is mainly used for conveying water, and is an ideal choice for tap water pipes.
- Q: Can ductile iron pipe be used for fire protection systems?
- Yes, ductile iron pipe can be used for fire protection systems. Ductile iron pipe is known for its strength and durability, making it suitable for various applications, including fire protection systems. Its high tensile strength and resistance to cracking and breaking make it a reliable choice for transporting water and other fire suppression agents. Additionally, ductile iron pipe has excellent corrosion resistance properties, ensuring long-term performance and reliability in fire protection systems. Overall, ductile iron pipe is a suitable and commonly used material for fire protection systems due to its strength, durability, and corrosion resistance.
- Q: Can ductile iron pipes be used for underground compressed air systems?
- Underground compressed air systems can utilize ductile iron pipes due to their high strength and durability. These pipes are suitable for various applications, including underground installations, thanks to their corrosion resistance. This is especially important in underground systems where moisture and other environmental factors can cause damage over time. Moreover, ductile iron pipes have the capability to withstand high pressure, making them a dependable choice for compressed air systems. However, it is crucial to ensure proper installation of the pipes, including adequate support and protection, to prevent any damage or leaks. To maintain the longevity and efficiency of the underground compressed air system, regular maintenance and inspection should also be carried out.
- Q: What is the relationship between the direction of the spigot and the direction of the flow in the ductile iron pipe?
- Use more than 18 casting molten iron, by adding the spheroidizing agent, through the centrifugal ductile iron machine high-speed centrifugal casting pipe
- Q: Do ductile iron pipes require external coatings or wraps?
- Ductile iron pipes typically require external coatings or wraps to protect against corrosion. Despite being strong and durable, ductile iron is still prone to corrosion when exposed to specific environmental conditions. Applying external coatings or wraps adds an extra layer of protection, extending the lifespan and maintaining the structural integrity of the pipes. These coatings can vary and may consist of materials like epoxy, polyethylene, or zinc, acting as a barrier between the pipe surface and corrosive elements in the environment. Additionally, wraps made of materials such as polyethylene or polypropylene can provide mechanical protection against impact or abrasion. Therefore, it is generally advisable to apply external coatings or wraps to ductile iron pipes to enhance corrosion resistance and ensure long-term performance.
- 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 is the expected deflection limit of ductile iron pipes?
- The expected deflection limit of ductile iron pipes is typically around 2% of the pipe's diameter, as per industry standards.
- Q: How do ductile iron pipes handle ground movement due to tree roots?
- Ductile iron pipes are known for their strong and durable nature, making them highly resistant to ground movement caused by tree roots. The flexibility of ductile iron allows it to withstand the pressure exerted by growing tree roots without fracturing or breaking. This is due to the material's ability to absorb and distribute stress, which helps to minimize the impact of ground movement. Moreover, ductile iron pipes have a smooth inner surface that minimizes the chances of tree root intrusion. The tightly sealed joints between the pipes also prevent roots from penetrating and causing damage. In instances where tree roots do manage to penetrate the soil and come into contact with ductile iron pipes, their resistance to corrosion provides an added advantage. Ductile iron pipes are coated with a protective layer that prevents the formation of rust and corrosion, ensuring their longevity and structural integrity. However, it is important to note that while ductile iron pipes are highly resistant to ground movement caused by tree roots, regular inspection and maintenance are still recommended. This allows for early detection and necessary repairs to be carried out if any root intrusion or damage is identified.
- Q: Can ductile iron pipes be used for dam construction?
- Indeed, dam construction can utilize ductile iron pipes. Renowned for their robustness, longevity, and resistance to corrosion, these pipes prove apt for various purposes, including the construction of dams. They exhibit remarkable resilience under intense pressure, rendering them perfect for transporting water and other fluids throughout the dam's framework. Moreover, their capacity to withstand external forces and ground shifts establishes them as a dependable option for dam construction. Furthermore, the relative ease of installation and maintenance of ductile iron pipes enhances their appropriateness for dam construction endeavors.
- Q: What are the typical joint restraint systems used in ductile iron pipes?
- The typical joint restraint systems used in ductile iron pipes are mechanical joint restraints, push-on joint restraints, and restrained joint systems. These systems are designed to prevent pipe separation and movement at the joints, ensuring the integrity and stability of the pipeline.
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DUCTILE IRON PIPE C Class DN125
- Ref Price:
-
- 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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