DUCTILE IRON PIPESC Class DN400
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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 be welded? Is weldability comparable to gray iron?
- Nodular cast iron welding can be determined, this should be in some high strength cast iron equipment used more, the tensile strength of normally ductile cast iron welding in welding is higher, is worse than the grey cast iron, it is actually very difficult to distinguish with the naked eye is ductile iron or cast iron the iron in the repair equipment, we usually use WE777 special cast iron electrode universal wide welding, but it is only for maintenance use, the effect is really good, reducing the risk of cracking and high strength welding rod matching to ensure the strength of welding.
- Q: The difference between ductile iron pipe and UPVC drain pipe
- Centrifugal ductile iron pipe is ideal for urban water supply, gas pipelines, sets of high strength, good ductility and corrosion resistance advantages, performance with nature, iron and steel, is the replacement of the traditional cast iron pipe and common steel pipe renewal;
- Q: How do ductile iron pipes perform in acidic soil conditions?
- Ductile iron pipes perform well in acidic soil conditions due to their inherent corrosion resistance. The high carbon content and protective coating of ductile iron pipes make them less susceptible to corrosion from acidic substances in the soil, ensuring their durability and longevity.
- Q: Can ductile iron pipes be used for underground storage of hazardous materials?
- No, ductile iron pipes are not recommended for underground storage of hazardous materials due to potential corrosion issues and the risk of leaks or contamination.
- Q: What is ductile iron pipe?
- Ductile iron pipe is a kind of cast iron pipe. In quality, the spheroidization of cast iron pipes is controlled to be 1-3 (spheroidization rate 80%), so the mechanical properties of the material have been better improved, with the nature of iron and the properties of steel. Ductile cast iron pipe after annealing, the microstructure is ferrite and pearlite, good mechanical properties, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc..
- Q: What is the maximum temperature that ductile iron pipe can handle?
- The maximum temperature that ductile iron pipe can handle depends on various factors such as the specific grade of ductile iron, the duration of exposure to high temperatures, and the presence of any external factors like corrosive environments. Generally, ductile iron pipes can handle temperatures up to 400-450 degrees Fahrenheit (204-232 degrees Celsius) for short durations. However, it is important to consult the manufacturer's specifications and guidelines to determine the specific maximum temperature limits for a particular grade of ductile iron pipe. Additionally, it is recommended to consider the effects of thermal expansion, potential loss of mechanical properties, and any additional protective measures that may be required at elevated temperatures.
- Q: What are the typical joint sealing requirements for ductile iron pipes under pressure?
- The typical joint sealing requirements for ductile iron pipes under pressure involve the use of gaskets and mechanical joints to ensure a leak-free connection. Gaskets are typically made of rubber or synthetic materials and are placed between the pipe ends to create a tight seal. These gaskets are designed to withstand the pressure of the flowing fluid and prevent any leakage. They also provide flexibility to accommodate for any slight misalignment or movement of the pipes. Mechanical joints, such as push-on joints or restrained joints, are another common method of sealing ductile iron pipes. These joints consist of a mechanical connection that securely holds the pipe ends together. They can provide a reliable seal without the need for additional gaskets. In addition to gaskets and mechanical joints, proper installation techniques are crucial for ensuring effective joint sealing. This includes proper alignment of the pipes, correct tightening of bolts or screws, and the use of appropriate lubricants or sealants. It is important to note that the specific joint sealing requirements for ductile iron pipes under pressure may vary depending on the application, the type of fluid being transported, and the applicable industry standards or regulations. Therefore, it is essential to consult the manufacturer's guidelines and relevant codes to determine the appropriate joint sealing requirements for a specific project.
- Q: What is the expected sound transmission loss of ductile iron pipes?
- The sound transmission loss of ductile iron pipes can vary depending on factors like pipe thickness, diameter, and the surrounding environment. Generally, ductile iron pipes have good soundproofing properties because they are dense and heavy. They are designed to minimize noise transmission and vibration. Ductile iron pipes can significantly reduce noise transmission. The material's density and mass block sound waves and reduce their transmission. However, it is important to note that the sound transmission loss of ductile iron pipes may not be as high as other specialized soundproofing materials like acoustic insulation or double-wall piping systems. To accurately determine the expected sound transmission loss of ductile iron pipes in a specific application, it is recommended to consult the manufacturer's specifications or conduct acoustic tests following relevant standards like ASTM E90. These tests can provide precise data on the sound transmission loss values of ductile iron pipes under different conditions, ensuring proper noise control and acoustic performance in specific installations.
- Q: What kind of joints are used with ductile iron pipe?
- The most commonly used joints with ductile iron pipe are push-on joints and restrained joints.
- Q: Are there any limitations to the length of ductile iron pipe sections?
- Yes, there are limitations to the length of ductile iron pipe sections. The maximum length of ductile iron pipe sections is typically dictated by factors such as transportation limitations, installation requirements, and structural considerations. Additionally, longer pipe sections may be more prone to bending or sagging under their own weight, which can impact the performance and integrity of the pipeline system. Therefore, it is important to adhere to industry standards and guidelines when determining the length of ductile iron pipe sections for a specific application.
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DUCTILE IRON PIPESC Class DN400
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
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