DUCTILE IRON PIPES C Class 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: Can ductile iron pipes be used for mining applications?
- Mining applications can indeed utilize ductile iron pipes. These pipes possess exceptional mechanical properties, including high tensile strength, impact resistance, and durability. As a result, they are well-suited for a range of challenging environments, including mining operations. The pipes are capable of withstanding substantial loads and pressures, making them ideal for the transportation of water, slurry, and other fluids utilized in mining processes. Moreover, ductile iron pipes have a smooth internal surface that minimizes friction and promotes the efficient flow of materials. Consequently, they find extensive use in tasks such as dewatering, tailings disposal, and the transport of corrosive or abrasive substances within the mining industry. Overall, due to their strength, durability, and suitability for demanding conditions, ductile iron pipes offer a dependable and cost-effective choice for mining applications.
- Q: What is the expected thermal expansion coefficient of ductile iron pipes?
- The expected thermal expansion coefficient of ductile iron pipes varies depending on several factors, including the specific composition of the iron and the temperature range in which the pipes are being used. However, as a general guideline, the thermal expansion coefficient of ductile iron pipes typically falls within the range of 10 to 14 x 10^-6 per degree Celsius (10-14 μm/m°C). This means that for every degree Celsius increase in temperature, a ductile iron pipe will expand by approximately 10 to 14 micrometers per meter of length. It is important to note that these values are approximate and may vary depending on the specific conditions and application of the pipes.
- Q: How does ductile iron pipe handle temperature changes?
- Ductile iron pipe is designed to handle temperature changes effectively. Its composition and structure make it highly resistant to thermal expansion and contraction, minimizing the risk of damage. This property allows the pipe to withstand extreme temperature variations without compromising its structural integrity, making it a reliable choice for various applications where temperature fluctuations are common.
- Q: Can ductile iron pipes be used for underground oil and gas pipelines?
- Yes, ductile iron pipes can be used for underground oil and gas pipelines. Ductile iron is a strong and durable material that can withstand the high pressure and corrosive nature of oil and gas transportation. It has excellent tensile strength and impact resistance, making it suitable for underground applications. Ductile iron pipes are also resistant to external loads, which is important for underground pipelines that may be subject to soil movement or heavy traffic. Furthermore, ductile iron pipes can be easily jointed, allowing for efficient installation and maintenance. However, it is important to consider factors such as soil conditions, environmental factors, and specific project requirements before choosing ductile iron pipes for underground oil and gas pipelines.
- Q: How does ductile iron pipe perform in areas with high soil contamination?
- Ductile iron pipe performs well in areas with high soil contamination due to its inherent strength and corrosion resistance. Its durable and robust nature allows it to withstand the chemical and physical challenges posed by contaminated soil. Additionally, its smooth interior surface minimizes the accumulation of debris and sediment, reducing the chances of blockages and maintaining efficient flow. Overall, ductile iron pipe is a reliable choice for areas with high soil contamination, providing long-lasting and dependable performance.
- Q: How can the internal and external walls of ductile iron pipes be protected from corrosion?
- Inner wall cement anticorrosive exterior wall asphalt anticorrosion
- Q: What are the different coatings available for ductile iron pipe?
- Some of the different coatings available for ductile iron pipe include cement mortar lining, polyethylene encasement, polyurethane coating, and epoxy coating.
- Q: What are the different methods for cutting ductile iron pipe?
- The cutting of ductile iron pipe can be done in various ways, depending on the project's specific needs and limitations. Some commonly used methods include: 1. Manual Cutting: To cut through the ductile iron pipe, one can employ a handheld saw or grinder equipped with an abrasive cutting wheel. While this method is simple and cost-effective, it can be laborious and time-consuming for larger pipe sizes. 2. Mechanical Cutting: Specialized machinery, such as bandsaws, pipe cutters, or hydraulic cutting machines, can be utilized to mechanically cut through the ductile iron pipe. These machines offer faster and more precise cuts, especially for larger pipe sizes. However, they tend to be more expensive and require skilled operators. 3. Torch Cutting: Also known as oxyfuel cutting, torch cutting involves heating the ductile iron pipe using a torch and then introducing a high-pressure oxygen stream to facilitate a chemical reaction that cuts through the metal. This method is effective for thick-walled ductile iron pipes but necessitates proper safety precautions due to the significant heat and sparks it generates. 4. Plasma Arc Cutting: The utilization of a high-velocity jet of ionized gas (plasma) to melt and cut through the ductile iron pipe characterizes plasma arc cutting. This method is ideal for precision and efficiency when cutting through thick-walled pipes. However, it can be more costly and may require specialized equipment and training. 5. Waterjet Cutting: Waterjet cutting involves using a high-pressure jet of water mixed with an abrasive material to cut through the ductile iron pipe. This method offers high precision and does not generate heat or sparks, making it suitable for sensitive environments. However, it tends to be slower and more expensive compared to other cutting methods. When selecting the appropriate method for cutting ductile iron pipe, factors such as pipe size, project requirements, budget, and safety must be taken into consideration. Consulting professionals or experts in the field can assist in determining the most suitable method for a specific project.
- Q: What is the difference between flexible joint mechanism and seismic cast iron pipe DN100 and ductile iron pipe?
- The ball compressive strength of ductile iron pipe is much higher than that of cast iron pipes, buried in the ground, the car is not easy to be crushed.
- Q: What does "K8" mean in ductile iron pipe grades?
- In wall thickness, K is the standard for wall thickness. The smaller the figure, the thinner the wall thickness of the same specification.For example, the K7 wall thickness of K8 is less than K8, and the wall thickness of DN500 is less than K9
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DUCTILE IRON PIPES C Class DN800
- Ref Price:
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- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
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- Supply Capability:
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