DUCTILE IRON PIPES K8 DN250
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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 differences between ductile cast iron pipes and centrifugal ductile iron pipes?
- Small, thin pipe fittings are usually rolled or continuously cast, and large, thick pipes are usually centrifugally cast. Compared to sand casting, the tissue is compact and homogeneous.
- Q: Can ductile iron pipes be used for underwater installations?
- Yes, ductile iron pipes can be used for underwater installations. Ductile iron is a strong and durable material that is resistant to corrosion, making it suitable for submerged applications. Additionally, ductile iron pipes have excellent joint integrity, ensuring water-tightness even under high hydrostatic pressure. The pipes are often coated with protective linings and coatings to further enhance their resistance to corrosion and extend their lifespan in underwater environments. Overall, ductile iron pipes are a reliable choice for underwater installations due to their strength, durability, and corrosion resistance properties.
- Q: Can ductile iron pipes be used in areas with high levels of organic matter in soil?
- Yes, ductile iron pipes can be used in areas with high levels of organic matter in soil. Ductile iron pipes have excellent corrosion resistance, making them suitable for various soil conditions, including those with high levels of organic matter. They are resistant to chemical attacks and offer long-term durability, making them a reliable choice for such environments.
- Q: Are ductile iron pipes resistant to acid mine drainage corrosion?
- Yes, ductile iron pipes are generally resistant to acid mine drainage (AMD) corrosion. Ductile iron is a highly durable material that has been widely used in various industries, including mining and water distribution, due to its excellent corrosion resistance properties. Acid mine drainage is a significant environmental problem that occurs when water comes into contact with sulfide minerals in mining areas, resulting in the formation of sulfuric acid. This acid can corrode and deteriorate various materials, including pipes, leading to infrastructure damage and water contamination. Ductile iron pipes have a protective layer formed by a cementitious lining, typically made of cement mortar or an epoxy coating. This lining acts as a barrier between the corrosive AMD and the pipe material, preventing direct contact and reducing the likelihood of corrosion. Furthermore, ductile iron pipes have a high resistance to both internal and external corrosion, making them well-suited for environments where acid mine drainage may be present. They have proven to be highly reliable and long-lasting even in harsh conditions, ensuring the continued integrity of the water distribution system and minimizing the potential for leaks or failures. However, it is important to note that the resistance of ductile iron pipes to acid mine drainage corrosion can also depend on several other factors, such as the specific composition and concentration of the AMD, the duration of exposure, and the temperature. Therefore, it is recommended to consult with experts and conduct proper material testing and analysis to ensure the suitability of ductile iron pipes in specific AMD environments.
- Q: Are ductile iron pipes suitable for hydroelectric power plants?
- Yes, ductile iron pipes are suitable for hydroelectric power plants. They possess excellent strength, durability, and corrosion resistance, making them ideal for transporting water in the power generation process. Additionally, their flexibility allows for easier installation and maintenance, reducing potential downtime in hydropower operations.
- Q: How are ductile iron pipes different from PVC pipes?
- Ductile iron pipes and PVC pipes are utilized extensively in plumbing and water distribution systems, but they differ significantly in terms of their composition and properties. Ductile iron pipes are crafted from a particular form of cast iron that contains graphite nodules, which provide the material with ductility and flexibility. Consequently, these pipes can endure high pressures and heavy loads without succumbing to breakage or cracking. Ductile iron pipes are renowned for their robustness and longevity, making them particularly suitable for underground applications and areas with substantial traffic. Conversely, PVC pipes are constructed from a plastic known as polyvinyl chloride. These pipes possess rigidity and lack the same level of strength as ductile iron pipes. PVC pipes are commonly employed in low-pressure scenarios, such as residential plumbing systems, irrigation, and drainage systems. These pipes are lightweight, easy to install, and resistant to corrosion, rendering them a favored option for residential and non-industrial purposes. The cost disparity between ductile iron pipes and PVC pipes represents another distinction. Due to higher material and production expenses, ductile iron pipes tend to be pricier. Conversely, PVC pipes are relatively inexpensive to manufacture, making them a cost-effective choice for numerous plumbing projects. In summary, the primary disparities between ductile iron pipes and PVC pipes involve their composition, strength, flexibility, and cost. Ductile iron pipes, formed from cast iron, are celebrated for their strength and durability, while PVC pipes, formed from plastic, are lighter and more cost-effective. The selection between these two types of pipes depends on the specific demands of the plumbing project, including pressure, load-bearing capacity, and budgetary considerations.
- Q: Can ductile iron pipes be used in marine environments?
- Yes, ductile iron pipes can be used in marine environments. Ductile iron is highly resistant to corrosion and can withstand the harsh conditions found in marine environments, making it an ideal choice for piping systems in such settings.
- Q: General cast iron prices now
- Hubei, Suizhou, in 2010, normally 5000-7000 tons of iron, if required to join copper and other metals, the price is calculated. The price is very low, because the market price in Suizhou is the lowest in the whole country. Under normal circumstances, it should be 8000 tons a ton
- Q: Can ductile iron pipes be used for underground geothermal systems?
- Indeed, underground geothermal systems can utilize ductile iron pipes. Renowned for their robustness, endurance, and immunity to corrosion, these pipes are apt for myriad purposes, encompassing underground geothermal systems. They possess the capacity to withstand elevated temperatures and pressures, rendering them optimal for conveying scorching geothermal fluids. Moreover, ductile iron pipes boast a protracted lifespan and the ability to endure the soil shifts and strains inherent in subterranean installations. Consequently, they represent a dependable selection for underground geothermal systems.
- Q: What is the weight of ductile iron pipe compared to other pipe materials?
- Ductile iron pipe is generally heavier than other pipe materials such as PVC or HDPE. Its weight can vary depending on the size and wall thickness of the pipe, but in general, ductile iron pipe is known for its durability and strength, which often results in a higher weight compared to other pipe materials.
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DUCTILE IRON PIPES K8 DN250
- 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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