Ductile Iron Pipe DN150
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Place of Origin: | China (Mainland) | Brand Name: | CMAX | Model Number: | T type / K type / Flange type |
Length: | 6m / 5.7m / Negotiable | Standard: | ISO2531 / EN545 / EN598 | Application: | Potable / Sewage water |
Diameter: | DN80~DN2200 | Shape: | Round | Hardness: | 230 |
Pipe Wall Thickness: | standard | Pull Strength: | 420 | Yield (≥ MPa): | 300 |
Material: | Ductile Iron | Type: | Centrifugal ductile cast iron pipe | Certification: | ISO2531 / EN545 / EN598 |
Outer Diameter: | 80-2200 | Thickness: | standard | Specification: | DN80~DN2200 |
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Ductile iron pipe is sized according to a dimensionless term known as the Pipe Size or Nominal Diameter (known by its French abbreviation, DN). This is roughly equivalent to the pipe's internal diameter in inches or millimeters. However, it is the external diameter of the pipe that is kept constant between changes in wall thickness, in order to maintain compatibility in joints and fittings. Consequently the internal diameter varies, sometimes significantly, from its nominal size. Nominal pipe sizes vary from 3 inches up to 64 inches, in increments of at least 1 inch, in the USA.
Pipe dimensions are standardised to the mutually incompatible AWWA C151 (U.S. Customary Units) in the USA, ISO 2531 / EN 545/598 (metric) in Europe, and AS/NZS 2280 (metric) in Australia and New Zealand. Although both metric, European and Australian are not compatible and pipes of identical nominal diameters have quite different dimensions.
Flanges are flat rings around the end of pipes which mate with an equivalent flange from another pipe, the two being held together by bolts usually passed through holes drilled through the flanges. A deformable gasket, usually elastomeric, placed between raised faces on the mating flanges provides the seal. Flanges are designed to a large number of specifications that differ because of dimensional variations in pipes sizes and pressure requirements, and because of independent standards development. In the U.S. flanges are either threaded or welded onto the pipe. In the European market flanges are usually welded on to the pipe. In the U.S. flanges are available in a standard 125 lb. bolt pattern as well as a 250 lb (and heavier) bolt pattern (steel bolt pattern). Both are usually rated at 250 psi (1,700 kPa). A flanged joint is rigid and can bear both tension and compression as well as a limited degree of shear and bending. It also can be dismantled after assembly. Due to the rigid nature of the joint and the risk of excessive bending moment being imposed, it is advised that flanged pipework is not buried.
Current flange standards used in the water industry are ANSI B16.1 in the USA, EN 1092 in Europe, and AS/NZS 4087 in Australia and New Zealand.
Ductile iron pipe is somewhat resistant to internal corrosion in potable water and less aggressive forms of sewage. However, even where pipe material loss and consequently pipe wall reduction is slow, the deposition of corrosion products on the internal pipe wall can reduce the effective internal diameter. A variety of linings are available to reduce or eliminate corrosion, including cement mortar, polyurethane and polyethylene. Of these, cement mortar lining is by far the most common.
Polyurethane (Plastic wrap) marginally protects piping made of ductile cast iron against corrosion and ensures meeting hygienic standards for drinking water at the same time in the early years. Polyurethane is used for both the inside lining and the outside coating. Because of polyurethane's elasticity, the coating remains intact even if the pipe is deformed. A major problem is that the poly wrap is not able to be uniformly installed or even installed without rips and creates isolated corrosion attacks. Corrosion Experts
Polyurethane coatings were first used in 1972.[citation needed] In comparison with other coatings, the internal polyurethane lining exhibits a high resistance to various different media such as drinking water, wastewater, de-mineralised water, industrial water and gas, as well as to aggressive solutions such as sulphuric acid. The polyurethane outside coating is suitable for all kinds of soil.
Polyurethane is a thermosetting plastic with no solvents, with a three-dimensionally linked molecular structure giving it mechanical stability. The polyurethane used for conating has the following standard properties, according to EN 545 and ISO 2531 standards.
- Q: How does ductile iron pipe perform in areas with high soil settlement?
- Ductile iron pipe has gained a reputation for its exceptional performance in regions where soil settlement is significant. Thanks to its inherent strength and durability, it remains structurally intact under the pressures exerted by settling soil. The ductile iron pipe's flexible nature enables it to accommodate ground movements caused by soil settlement, thereby reducing the risk of pipe failure or damage. Its adaptability to these movements helps prevent cracks, leaks, and breaks that may occur in more rigid pipe materials. Furthermore, the strong resistance of ductile iron pipe to corrosion provides an additional advantage in areas with high soil settlement. It can withstand the corrosive effects of the soil and other environmental factors, ensuring the pipe system's longevity and reliability. In regions with substantial soil settlement, ductile iron pipe is often the preferred choice due to its ability to handle ground movements without compromising performance. Its strength, flexibility, and corrosion resistance make it an ideal solution for maintaining a robust and efficient water distribution system, even in challenging soil conditions.
- Q: Can ductile iron pipes be used for water supply in remote areas?
- Yes, ductile iron pipes can be used for water supply in remote areas. Ductile iron pipes are known for their strength, durability, and versatility, making them suitable for various applications, including water supply systems. These pipes have a high resistance to corrosion and can withstand harsh environmental conditions, making them ideal for remote areas where the availability of maintenance and repair services may be limited. Additionally, ductile iron pipes have a longer lifespan compared to other materials, ensuring the longevity of the water supply system in remote areas. Overall, ductile iron pipes are a reliable choice for water supply in remote areas due to their durability, corrosion resistance, and long lifespan.
- Q: Are ductile iron pipes suitable for use in irrigation pivot systems?
- Indeed, irrigation pivot systems can undoubtedly make use of ductile iron pipes. This particular material possesses remarkable strength and durability, enabling it to endure the immense pressures and stress typically encountered in irrigation systems. Moreover, it exhibits resistance against corrosion and can withstand the continuous exposure to water and a variety of chemicals commonly employed in irrigation practices. Furthermore, the smooth interior surface of ductile iron pipes assists in maintaining a consistent water flow and mitigating frictional losses. In summary, the strength, durability, and corrosion resistance of ductile iron pipes render them a dependable choice for irrigation pivot systems.
- Q: What is the weight of ductile iron pipes compared to other materials?
- Compared to other commonly used materials in the construction industry, ductile iron pipes tend to be heavier. The weight of these pipes can vary depending on their specific size and dimensions, but they are usually heavier than materials like PVC, HDPE, and steel pipes. The primary reason for this increased weight is the dense nature of ductile iron, which grants it durability, strength, and resistance to corrosion. However, this weight also presents challenges in terms of transportation, installation, and handling, necessitating appropriate equipment and techniques for safe and efficient installation. Despite being heavier, ductile iron pipes offer numerous advantages in terms of longevity and performance in various applications.
- Q: How can 4 inch ductile iron pipe be connected with 2 inch galvanized pipe?
- The general electric welded steel pipe for clarinet.
- Q: What is the difference between ductile iron pipes and cast iron pipes?
- Ductile iron pipes and cast iron pipes are both commonly used in various applications, but they differ in their composition, properties, and manufacturing processes. Composition: Ductile iron pipes are made from a type of cast iron known as ductile iron, which contains higher levels of carbon, silicon, and other alloying elements like magnesium. On the other hand, cast iron pipes are made from regular cast iron, which has a higher carbon content and lower levels of alloying elements. Properties: Ductile iron pipes are known for their high tensile strength, flexibility, and durability. They can withstand higher pressure and have a greater resistance to impact, making them suitable for applications that require robust performance. In contrast, cast iron pipes are more brittle and fragile, which makes them prone to cracking or breaking under pressure or impact. Manufacturing process: Ductile iron pipes are created through a process called centrifugal casting, where molten ductile iron is poured into a spinning mold. This centrifugal force helps in distributing the molten metal evenly, resulting in a strong and uniform pipe. Cast iron pipes, on the other hand, are made using a process called sand casting, where molten cast iron is poured into a mold made of compacted sand. This method is less precise and can lead to variations in the final product. Applications: Due to their superior strength and flexibility, ductile iron pipes are commonly used in water and sewage systems, as well as in industrial pipelines that require high-pressure resistance. Cast iron pipes, on the other hand, are typically used in non-pressure applications like drainage systems or underground sewer lines. In summary, the main difference between ductile iron pipes and cast iron pipes lies in their composition, properties, manufacturing processes, and applications. Ductile iron pipes offer greater strength, flexibility, and durability, making them suitable for high-pressure applications, while cast iron pipes are more brittle and commonly used in non-pressure applications.
- Q: What is the use of ductile iron?
- Manufacturer of automotive diesel engines are starting from the prolong engine life, particularly cautious about expressing selection of crankshaft material, when the isothermal bainitic ductile iron and high strength in order to increase the power to weight ratio, expand the turbocharger use influence design according to the material, equipped with exhaust turbocharger tube the temperature is increased to 500 to 70. C, in this condition, the oxidation and creep strength become important. Ductile iron, with good properties, is being used instead of gray iron for the exhaust pipe and will further use silicon aluminum alloy ductile iron as the temperature increases.
- Q: What is the typical weight of ductile iron pipes?
- The weight of ductile iron pipes can differ according to their size and thickness. Nonetheless, as a broad reference, smaller diameter pipes typically weigh around 1 pound per foot, while larger diameter pipes can weigh several hundred pounds per foot. The weight of ductile iron pipes is influenced by factors like the dimensions of the pipes, the thickness of their walls, and the particular requirements of the intended use. It is essential to acknowledge that these weights are approximate and subject to variation depending on the manufacturer and product specifications.
- Q: Can ductile iron pipes be used for underground river crossings?
- Yes, ductile iron pipes can be used for underground river crossings. Ductile iron pipes are known for their strength and durability, making them suitable for various applications including underground river crossings. These pipes have a high tensile strength and can withstand the external loads and pressures exerted by the surrounding soil and water. Additionally, they have excellent corrosion resistance, which is crucial when dealing with underground water sources like rivers. Ductile iron pipes are also capable of withstanding ground movements, settling, and other geological challenges that may occur during the installation and operation of underground river crossings. Therefore, they are a reliable choice for ensuring the safe and efficient transportation of water across rivers while maintaining the integrity of the underground infrastructure.
- Q: Are there any specific standards or regulations for ductile iron pipe?
- Ductile iron pipe is subject to specific standards and regulations. It is widely used in water and wastewater systems due to its strength and durability. The American Water Works Association (AWWA) C151 standard is the most well-known standard for ductile iron pipe. This standard outlines the minimum requirements for ductile iron pipe, including materials, dimensions, tolerances, and testing methods. It also provides guidance on the manufacturing, installation, and maintenance of ductile iron pipe systems. Apart from the AWWA C151 standard, there are other standards and regulations that govern the use of ductile iron pipe in different countries. In Europe, for instance, ductile iron pipe is regulated by the EN 545 and EN 598 standards. These standards specify the requirements for ductile iron pipes and fittings used in water supply and wastewater systems. Additionally, government agencies like the Environmental Protection Agency (EPA) in the United States may have specific regulations and guidelines for using ductile iron pipe in certain applications, such as drinking water systems. Manufacturers, contractors, and engineers involved in the design, installation, and maintenance of ductile iron pipe systems must ensure compliance with these standards and regulations. This is crucial to guarantee that ductile iron pipe is manufactured to the highest quality standards and that it is installed and maintained correctly, ensuring its durability and reliability in water and wastewater systems.
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