DUCTILE IRON PIPE K9 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: Why is the sound speed of nodular cast iron lowered after heat treatment?
- Sound travels faster in a solid than it does in a liquidOr so, after heating, the intermolecular repulsion decreases, so that the same potential energy conduction requires molecules to move more distances, making the transmission slower
- Q: Are ductile iron pipes suitable for bridge crossings or crossings under roadways?
- Yes, ductile iron pipes are suitable for bridge crossings or crossings under roadways. Ductile iron pipes are known for their strength, durability, and resistance to external forces such as heavy traffic loads or bridge movements. They have a high tensile strength and can withstand the stress and strain caused by the weight of vehicles passing over them. Additionally, ductile iron pipes are highly corrosion resistant, making them suitable for underground installations where they may be exposed to water or other corrosive elements. Moreover, these pipes have a long lifespan and require minimal maintenance, making them a reliable choice for bridge crossings or crossings under roadways. Overall, ductile iron pipes provide a cost-effective and efficient solution for such infrastructure projects.
- Q: What quota can be used for the installation of DN300 ductile iron pipes?
- Ductile iron is a kind of high strength cast iron material developed in 50s twentieth Century, its comprehensive performance is close to the steel, it is based on its excellent performance, has been successfully used in casting complex stress, strength, toughness and wear resistance requirements of the higher parts. Nodular cast iron has developed rapidly to be second only to grey cast iron and widely used as cast iron material. The so-called "iron instead of steel", mainly refers to ductile iron.
- Q: How are ductile iron pipes protected against interior corrosion?
- Ductile iron pipes are protected against interior corrosion through a process known as cement mortar lining. This involves applying a layer of cement mortar to the interior surface of the pipe. The cement mortar acts as a protective barrier, preventing the corrosive elements in the water or fluid from coming into direct contact with the iron material. To apply the cement mortar lining, the interior surface of the ductile iron pipe is first prepared by removing any loose scale or debris. Then, a cement mortar mixture is prepared by combining cement, sand, and water to form a paste-like consistency. This mixture is then applied to the pipe's interior surface using a spinning machine or manually by skilled workers. Once the cement mortar lining is applied, it is left to cure for a specific period of time, typically around 24 hours. During this curing process, the cement mortar hardens and forms a dense protective layer on the pipe's interior surface. The cement mortar lining offers various benefits in protecting ductile iron pipes against corrosion. It provides a smooth and continuous surface that prevents the water or fluid from directly contacting the iron material, reducing the risk of corrosion. Additionally, the cement mortar lining also helps to reduce the friction within the pipe, improving flow efficiency. Regular inspection and maintenance of the cement mortar lining are essential to ensure its effectiveness in preventing corrosion. Over time, the lining may develop cracks or deteriorate, which can compromise its protective properties. Therefore, it is important to periodically inspect the lining and repair or replace it as needed to maintain the integrity of the ductile iron pipes and prevent interior corrosion.
- Q: Can ductile iron pipes be installed outdoors?
- Ductile iron pipes can be installed outdoors.
- Q: What are the typical joint restraint requirements for ductile iron pipes under pressure?
- The typical joint restraint requirements for ductile iron pipes under pressure include the use of mechanical joint restraining devices such as bolts, gaskets, and thrust blocks. These restraints are necessary to prevent the pipes from separating or moving due to the internal pressure of the fluid being transported. Additionally, proper alignment and anchoring of the pipes are essential to ensure the integrity and stability of the pipeline system.
- Q: How much is a ductile iron pipe dn400?
- High quality cast iron ductile iron pipe with low phosphorus and low sulfur iron making production of blast furnace, according to the current international advanced centrifugal casting, annealing process, water-cooled metal type centrifugal pipe casting machine casting, after annealing, socket dressing, pressure test, internal lining layer of cement, cement treated lining, water and health cement lining, outer wall coated with asphalt paint, asphalt paint baking, socket antirust processing, spray marks and other procedures for the packaging, with high strength, high elongation, corrosion resistance of a body strong as iron.
- Q: Can ductile iron pipes be used for bridge crossings?
- Yes, ductile iron pipes can be used for bridge crossings. Ductile iron pipes are known for their strength, durability, and resistance to corrosion, making them suitable for various applications, including bridge crossings. They can withstand heavy loads and provide a reliable conduit for water, sewage, or other utilities across the bridge.
- Q: How do ductile iron pipes perform in high-traffic areas?
- Ductile iron pipes perform exceptionally well in high-traffic areas due to their inherent strength and durability. These pipes are manufactured using a unique composition that includes graphite nodules, which give them their characteristic ductility. This ductility allows the pipes to flex and withstand heavy loads and vibrations caused by traffic without cracking or breaking. In high-traffic areas, where the ground is subject to constant movement and heavy loads from vehicles, ductile iron pipes offer superior resistance to stress and impact. Their ability to absorb and distribute the pressure from traffic ensures that these pipes maintain their structural integrity over time. This is particularly important as any damage or failure in a pipe system can result in costly repairs and disruptions to the water supply. Furthermore, ductile iron pipes are highly resistant to corrosion, making them suitable for installation in high-traffic areas exposed to various environmental conditions. The pipes are typically lined with a protective layer, such as cement mortar or epoxy, which provides an additional barrier against external factors. This corrosion resistance ensures the longevity of the pipes, reducing the need for frequent maintenance or replacement. Additionally, ductile iron pipes have excellent flow characteristics, allowing for efficient water distribution even in areas with high traffic demands. Their smooth interior surface minimizes friction and pressure losses, ensuring a consistent and reliable water supply to meet the needs of the surrounding population. Overall, ductile iron pipes are a reliable and robust choice for high-traffic areas. Their strength, durability, corrosion resistance, and efficient flow characteristics make them well-suited for withstanding the demands and challenges posed by heavy traffic, ensuring the continuous supply of water without compromising the structural integrity of the pipe system.
- Q: Can ductile iron pipes be used for pressure surge applications?
- Yes, ductile iron pipes can be used for pressure surge applications. Ductile iron pipes have excellent strength and durability, making them suitable for handling surge pressures caused by sudden changes in flow rates or water hammer events. They can withstand high internal pressures and have a high resistance to impact and fatigue. Additionally, ductile iron pipes have a smooth interior surface that allows for efficient flow of fluids, minimizing the potential for pressure surges. However, it is important to consider factors such as pipe size, wall thickness, and proper installation techniques to ensure the pipes can safely handle the specific pressure surge conditions in a given application. Consulting with a professional engineer or pipe manufacturer is recommended to determine the suitability of ductile iron pipes for pressure surge applications.
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DUCTILE IRON PIPE K9 DN500
- 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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