DUCTILE IRON PIPES K8 DN800
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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 are the lubricants for the installation of ductile iron pipes for tap water?
- When choosing lubricant, it is necessary to consider the movement of friction pairs, materials, surface roughness, working environment and working conditions, as well as the performance of lubricants. In mechanical equipment, lubricants are mostly distributed by lubrication to the parts that need lubrication.
- Q: What is the expected joint deflection capability of ductile iron pipes?
- Several factors can affect the expected joint deflection capability of ductile iron pipes. Generally, ductile iron pipes have a higher joint deflection capability compared to other pipe types. The joint deflection capability refers to how well a pipe joint can handle angular deflection or misalignment during installation or due to ground movement. Ductile iron pipes are known for their flexibility, which allows them to withstand external forces and movements without compromising their structural integrity. The expected joint deflection capability of ductile iron pipes typically falls within a range of 1 to 5 degrees, depending on the pipe diameter and wall thickness. This means that the pipes can safely accommodate angular deflection within this range without experiencing leaks or failures. It's important to consider that the joint deflection capability can also be influenced by factors like the type and quality of the joint restraint system, soil conditions, installation techniques, and pipe alignment. To ensure optimal joint deflection capability, it is crucial to follow proper installation practices and adhere to the guidelines provided by the manufacturer. All in all, ductile iron pipes have been designed and manufactured with a significant joint deflection capability, making them suitable for a wide variety of applications, including water distribution, sewer systems, and industrial piping networks.
- Q: How does ductile iron pipe perform in seismic areas?
- Ductile iron pipe performs well in seismic areas due to its inherent strength and flexibility. Its ability to withstand ground movement and vibrations makes it a reliable choice for underground infrastructure in regions prone to earthquakes. Additionally, its robust construction and high resistance to corrosion and damage ensure its durability and safety even in seismically active zones.
- Q: What are the different methods for tapping ductile iron pipe?
- There are several different methods for tapping ductile iron pipe, depending on the specific requirements of the project. Some of the common methods used include: 1. Mechanical Tapping: This method involves using a mechanical tapping machine to create a hole in the ductile iron pipe. The machine is equipped with a cutting tool that rotates and cuts through the pipe wall, creating a clean hole. This method is commonly used for smaller diameter pipes and is relatively quick and efficient. 2. Hot Tapping: Hot tapping involves creating a hole in a pressurized ductile iron pipe while it is still in service. This method requires specialized equipment and expertise to ensure safety and maintain the integrity of the pipe. Hot tapping is commonly used when it is not feasible or practical to shut down the pipeline for maintenance or repair work. 3. Electrofusion Tapping: Electrofusion tapping is a method that uses an electrofusion saddle and fitting to create a branch connection on a ductile iron pipe. This method involves welding a fitting onto the pipe using an electrofusion machine, which creates a secure and leak-proof connection. Electrofusion tapping is commonly used for larger diameter pipes and is suitable for both water and gas applications. 4. Saddle Tapping: Saddle tapping involves attaching a saddle or clamp onto the ductile iron pipe and drilling a hole through the saddle into the pipe. The saddle is then equipped with a threaded outlet for connecting a branch line. This method is commonly used for smaller diameter pipes and is relatively simple and cost-effective. 5. Split Sleeve Tapping: Split sleeve tapping is a method that involves cutting a section out of the ductile iron pipe and installing a split sleeve over the cut. The split sleeve is then bolted together, creating a secure and watertight connection. This method is commonly used for larger diameter pipes and is suitable for both water and gas applications. It is important to note that the selection of the tapping method should be based on factors such as the pipe size, pressure rating, required branch connection, and the specific requirements of the project. Consulting with a professional engineer or tapping specialist is recommended to ensure the proper method is used for tapping ductile iron pipe.
- Q: How do ductile iron pipes perform in extreme weather conditions?
- Ductile iron pipes have excellent performance in extreme weather conditions. Their high tensile strength and flexibility allow them to withstand freezing temperatures, heavy snow loads, and extreme heat without cracking or breaking. Additionally, their corrosion-resistant properties make them highly durable and reliable in harsh weather environments, ensuring long-term performance and minimal maintenance requirements.
- Q: Can ductile iron pipes be used for railway crossings?
- Yes, ductile iron pipes can be used for railway crossings. Ductile iron is a strong and durable material that can withstand heavy loads and high traffic volumes, making it suitable for railway crossings. Additionally, it has excellent corrosion resistance properties, which is important for withstanding the harsh environmental conditions associated with railway crossings.
- Q: What are the different pressure ratings available for ductile iron pipe?
- The pressure ratings available for ductile iron pipe typically range from 150 psi to 350 psi, depending on the size and application of the pipe.
- Q: A tube is used only in ductile iron pipes, isn't it?
- Is that the nodular graphite cast iron pipe is called centrifugal ductile iron pipe, it has the properties of nature, iron and steel, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc.. Water supply pipe is the first choice, with high cost performance.
- 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: Can ductile iron pipe be used for marine and offshore applications?
- Ductile iron pipe is suitable for marine and offshore applications due to its high strength and durability. It is well-known for its ability to withstand demanding environments and is particularly resistant to corrosion, including the corrosive effects of saltwater and harsh marine conditions. Moreover, its ductility allows for flexibility and resistance to cracking or fracturing under high-pressure conditions. These exceptional properties make ductile iron pipe a dependable choice for transporting fluids and gases in marine and offshore industries, such as offshore oil and gas platforms, marine structures, and underwater pipelines. To further enhance the corrosion resistance of ductile iron pipes in marine and offshore applications, it is essential to utilize proper coating and cathodic protection systems.
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DUCTILE IRON PIPES K8 DN800
- Ref Price:
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- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
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