DUCTILE IRON PIPES K7 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) 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.
Features of Ductile Iron Pipes:
. Ductile Iron Pipe offers proven reliability and the quality.
. It is quick and easy installation.
. The ductile iron pipe has high pressure capability.
- Q:Is there a kind of pipe called lined ductile iron pipe? Seeking manufacturers?
- The 10kg pressure ball tube is also used as a drain, and the second is the W ductile iron pipe, i.e., without spigot, ductile tube, or lined ductile iron tube.
- Q:What is a graphite cast iron pipe?
- Ordinary cast iron consists of gray cast iron and ductile iron, the difference is the carbon in cast iron (graphite) exist, graphite in gray cast iron is in the shape of flake, so the strength and toughness are poor; graphite in shape is spherical, with little on dissevered the matrix. So strong and toughness will be much better.
- Q:What are the different types of linings available for ductile iron pipe?
- Ductile iron pipes offer various linings with distinct advantages and applications. 1. Cement mortar lining: The most commonly used lining for ductile iron pipes is cement mortar. It involves applying a layer of cement mortar to the pipe's interior surface. This lining excels in resisting corrosion and chemical attacks, making it suitable for potable water distribution, wastewater conveyance, and industrial pipelines. Additionally, it improves flow efficiency by reducing friction and turbulence within the pipe. 2. Polyethylene lining: Ductile iron pipes often utilize polyethylene linings when corrosion resistance is a primary concern. This lining consists of a layer of high-density polyethylene (HDPE), either extruded or sprayed onto the inner surface of the pipe. Polyethylene lining provides exceptional resistance to corrosion, abrasion, and chemical attacks, making it ideal for transporting aggressive fluids such as saltwater, chemicals, or industrial waste. 3. Polyurethane lining: For applications requiring protection against abrasive wear, polyurethane linings are commonly employed in ductile iron pipes. This lining is created by spraying or pouring a layer of polyurethane onto the inner surface of the pipe. Polyurethane lining offers excellent resistance to abrasion, impact, and chemical attacks. It is suitable for conveying abrasive slurries, mining applications, and other high-wear environments. 4. Epoxy lining: To safeguard against corrosion and chemical attacks, epoxy linings are applied to ductile iron pipes. This lining is typically formed by applying a layer of epoxy resin to the pipe's inner surface using centrifugal casting or electrostatic spraying. Epoxy lining demonstrates outstanding adhesion and corrosion resistance, making it suitable for various applications like potable water distribution, wastewater treatment, and industrial pipelines. 5. Zinc lining: Ductile iron pipes employ zinc linings to provide cathodic protection against corrosion. This lining involves applying a layer of zinc to the pipe's inner surface through hot-dip galvanizing or electroplating. Zinc lining acts as a sacrificial anode, corroding preferentially to the iron pipe and shielding it from corrosion. It is commonly used in highly corrosive environments like seawater or acidic soils. Ultimately, the selection of a lining for ductile iron pipes relies on the specific requirements of the application, including the transported fluid, desired corrosion resistance, and potential for abrasive wear. Seeking guidance from industry experts and considering factors like cost, longevity, and maintenance requirements aids in determining the most suitable lining option for a particular project.
- Q:Advantages and disadvantages of ductile iron pipes?
- Ductile iron pipes are mainly heated and annealed by intermediate frequency furnace, and then made as lining cement. The cast iron pipe is not made of lining cement.
- Q:Are ductile iron pipes suitable for use in cooling water systems?
- Yes, ductile iron pipes are suitable for use in cooling water systems. They offer excellent strength, durability, and corrosion resistance, making them ideal for transporting water at varying temperatures. Additionally, their flexibility allows them to withstand pressure and temperature changes, ensuring long-lasting and reliable performance in cooling water applications.
- Q:What is the expected fire resistance of ductile iron pipes?
- The expected fire resistance of ductile iron pipes is high due to their ability to withstand high temperatures without losing structural integrity. They have a melting point of approximately 1200°C, making them suitable for applications where fire protection is crucial.
- Q:How are ductile iron pipes installed?
- Ductile iron pipes are typically installed using a variety of methods, including trenching or open-cut excavation, horizontal directional drilling, and pipe bursting. In the traditional trenching method, a trench is dug to the required depth and slope, and the pipe is then lowered into place and joined using mechanical or push-on joints. Horizontal directional drilling involves drilling a pilot hole and then pulling the pipe through it, while pipe bursting involves breaking the existing pipe and replacing it with a new ductile iron pipe.
- Q:Are ductile iron pipes suitable for horizontal directional drilling?
- Yes, ductile iron pipes are suitable for horizontal directional drilling due to their high strength and flexibility, which allows them to withstand the stress and bending forces during the drilling process.
- Q:What is the expected maintenance for ductile iron pipes?
- The expected maintenance for ductile iron pipes involves regular inspections and preventative measures to ensure their longevity and optimal performance. Firstly, it is important to conduct routine visual inspections to identify any signs of corrosion, leaks, or other forms of damage. Inspecting the external surface for any signs of cracks, rust, or discoloration can help detect potential issues early on. Furthermore, periodic cleaning of the pipes is necessary to remove any debris or sediment buildup that may obstruct the flow of water. This can be achieved through flushing the pipes or using mechanical cleaning methods. Additionally, it is crucial to regularly check and maintain the protective coatings on the pipes, such as linings or external paints, to prevent corrosion and maintain their structural integrity. In terms of preventative maintenance, implementing a comprehensive corrosion control program can significantly extend the lifespan of ductile iron pipes. This can involve the application of corrosion inhibitors, cathodic protection systems, and periodic re-coating of the pipes. Regular monitoring of water chemistry parameters, such as pH levels and chlorine content, can also help prevent corrosion and extend the life of the pipes. Lastly, it is essential to keep accurate records of maintenance activities, including inspections, cleaning, and repairs, to track the condition of the pipes over time. This enables proactive planning for future maintenance and replacement needs, ultimately ensuring the efficient and reliable functioning of ductile iron pipes.
- Q:Can ductile iron pipes be made of flexible waterproof sleeves?
- Flexible waterproof casing is suitable for pipeline through the wall in vibration or by strict waterproof requirements of the structures of hardware fittings, general production enterprises according to the Construction Science Research Institute developed S312, 02S404 standard atlas manufacturing. The wall of flexible waterproof casing wall, in case of non concrete should be replaced by concrete walls, and a casing must be solidified on the wall; flexible waterproof casing application widely used in construction, chemical industry, iron and steel, tap water, sewage treatment and other units.
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DUCTILE IRON PIPES K7 DN300
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 1 pc
- Supply Capability:
- -
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OKorder Financial Service
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