Ductile Iron Pipe DN80

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Loading Port:: Tianjin

Payment Terms:: TT or LC

Min Order Qty:: 23 m.t.

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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:Can ductile iron pipes be used in high-temperature applications?: Ductile iron pipes are capable of being utilized in applications that involve high temperatures. Unlike PVC or HDPE pipes, ductile iron pipes possess a higher melting point, rendering them suitable for transporting fluids at elevated temperatures. The material properties of ductile iron, encompassing its strength, toughness, and ability to withstand thermal stress, allow it to endure higher temperatures without distorting or failing. Nevertheless, it is worth noting that the precise temperature threshold for ductile iron pipes may vary depending on factors such as the grade of ductile iron employed, the pressure of the fluid being conveyed, and the duration of exposure to elevated temperatures. Consequently, it is imperative to consult the manufacturer's specifications and guidelines in order to ensure the appropriate selection and installation of ductile iron pipes for high-temperature applications.

Q:How do ductile iron pipes handle seismic movements?: Ductile iron pipes are designed to withstand seismic movements due to their inherent flexibility and high tensile strength. The material's ductility allows it to bend and deform without fracturing, making it more resistant to stress and strain caused by seismic activity. Additionally, the pipes are typically installed with flexible joints that can absorb and accommodate the movement, further reducing the risk of damage or failure during earthquakes. Overall, ductile iron pipes are a reliable choice for underground infrastructure in seismic-prone areas.

Q:Are ductile iron pipes suitable for use in sewage pumping stations?: Yes, ductile iron pipes are suitable for use in sewage pumping stations. Ductile iron is known for its high strength, durability, and corrosion resistance, making it an ideal material for handling the challenging and corrosive conditions found in sewage systems. Additionally, ductile iron pipes have excellent hydraulic performance and can withstand the high pressures and flow rates typically encountered in sewage pumping stations.

Q:Are ductile iron pipes suitable for use in oil refineries?: Yes, ductile iron pipes are suitable for use in oil refineries. Ductile iron is a type of cast iron that offers a unique combination of strength, durability, and flexibility, making it an excellent choice for various applications, including oil refineries. One of the key advantages of ductile iron pipes is their high tensile strength, allowing them to withstand the high pressure and stress commonly found in oil refining processes. This strength is crucial for the transportation of various fluids, including crude oil, refined petroleum products, and chemicals within the refinery. Additionally, ductile iron pipes have excellent corrosion resistance properties, making them highly resistant to the corrosive effects of oil, chemicals, and other substances typically present in oil refineries. This corrosion resistance ensures the longevity and reliability of the pipes, reducing the need for frequent maintenance and replacement. Furthermore, ductile iron pipes have exceptional ductility, which means they can absorb and withstand significant impacts and vibrations without fracturing or breaking. This quality is advantageous in oil refineries where there may be frequent movement or potential stressors due to machinery, equipment, or ground settlement. Moreover, ductile iron pipes have a smooth interior surface that reduces friction, allowing for efficient fluid flow and minimizing pressure loss. This characteristic is essential in oil refineries, as it helps optimize the transportation of fluids, ensuring a smooth and reliable production process. In conclusion, ductile iron pipes are suitable for use in oil refineries due to their high tensile strength, corrosion resistance, ductility, and smooth interior surface. These pipes provide a reliable and durable solution for transporting various fluids within the refinery, contributing to the efficient and safe operation of oil refining processes.

Q:How does ductile iron pipe perform in areas with high soil movement?: Ductile iron pipe is known for its strength, durability, and flexibility, making it an ideal choice for areas with high soil movement. Unlike other types of piping materials, such as PVC or concrete, ductile iron pipe has the ability to withstand significant ground shifting without experiencing catastrophic failure. The inherent strength of ductile iron pipe allows it to resist the external forces exerted by soil movement, such as settlement, lateral movement, or ground heave. Its high tensile strength and ability to withstand bending stresses make it less susceptible to cracks, fractures, or leaks, ensuring the integrity of the pipeline system. Furthermore, ductile iron pipe has excellent deflection capabilities, meaning it can flex and accommodate ground movement without breaking. This flexural capacity enables the pipe to distribute the stress caused by soil movement along its length, reducing the concentration of forces at any specific point. In areas with high soil movement, ductile iron pipe also benefits from its corrosion resistance properties. The pipe is typically coated with a protective layer, such as cement-mortar lining or polyethylene encasement, which acts as a barrier against corrosive elements present in the soil. This protective coating helps to prevent damage and deterioration, ensuring the longevity and performance of the pipe even in challenging soil conditions. Overall, ductile iron pipe is highly recommended for areas with high soil movement due to its superior strength, flexibility, and corrosion resistance. Its ability to withstand ground shifting and distribute stress makes it a reliable choice for long-term performance and minimal maintenance requirements.

Q:Can ductile iron pipe be used for municipal water supply?: Indeed, municipal water supply systems have extensively relied on ductile iron pipe for numerous years, owing to its exceptional durability, strength, and corrosion resistance. Its suitability for underground use is evident in its ability to endure high pressure and substantial loads. Moreover, ductile iron pipe boasts an extended lifespan, often surpassing 100 years, making it a fiscally prudent option for municipal water supply systems. In summary, ductile iron pipe serves as a dependable and prevalent material for guaranteeing the secure and effective transportation of water to communities.

Q:Can ductile iron pipe be repaired if it gets damaged?: Yes, ductile iron pipe can be repaired if it gets damaged. Various repair methods such as welding, clamping, and epoxy lining can be used to fix cracks, leaks, or other types of damage in ductile iron pipes. However, the repair method depends on the nature and extent of the damage, and it is recommended to consult with experts or professionals for proper repair procedures.

Q:How are ductile iron pipes connected together?: Ductile iron pipes are typically connected together using a variety of methods, depending on the specific application and requirements. The most common method of connecting ductile iron pipes is through mechanical joint fittings. These fittings consist of a bell end on one pipe and a spigot end on the other, which are joined together using a rubber gasket and bolts or clamps. The rubber gasket provides a watertight seal, while the bolts or clamps secure the joint and prevent any movement or separation. Another method of connecting ductile iron pipes is through flanged joints. Flanged joints involve attaching a flange to the end of each pipe, which are then bolted together using bolts and nuts. This method is commonly used in larger diameter pipes or in situations where the pipes need to be easily disassembled. In addition to mechanical joint fittings and flanged joints, ductile iron pipes can also be connected using push-on or restrained joint fittings. Push-on joints utilize a rubber gasket that is pushed onto the spigot end of the pipe, creating a secure and watertight connection. Restrained joints, on the other hand, incorporate additional features such as welded-on collars or mechanical devices to prevent movement and provide added strength to the joint. Overall, the method of connecting ductile iron pipes together depends on factors such as pipe diameter, pressure requirements, and the specific application. It is important to follow the manufacturer's guidelines and industry standards to ensure proper installation and reliable performance of the connected pipes.

Q:What is the expected cyclic fatigue life of ductile iron pipes?: The expected cyclic fatigue life of ductile iron pipes can vary depending on several factors such as the quality of the material, design and installation practices, operating conditions, and maintenance. However, ductile iron pipes generally have a long fatigue life, often exceeding 100 years under normal operating conditions.

Q:What are the specifications of cast iron pipes?: To be divided into: cast cast pipe. Cast iron pipes are used for water supply, drainage and gas transmission lines. They include cast iron pipes and pipe fittings. Labor intensity is small. According to the casting method, it is divided into continuous cast iron pipe and centrifugal cast iron pipe, in which the centrifugal cast iron pipe is divided into sand mould and metal type two kinds. Divided into gray cast iron pipe and nodular cast iron pipe according to different material. Rubber ring seals for flexible interfaces,

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