DUCTILE IRON PIPES K8 DN80

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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 different pressure classes available for ductile iron pipe?: The different pressure classes available for ductile iron pipe include Class 100, Class 150, Class 200, Class 250, Class 300, Class 350, and Class 400.

Q:Can ductile iron pipes be used for geothermal systems?: Yes, ductile iron pipes can be used for geothermal systems. Ductile iron pipes have excellent strength and durability, making them suitable for handling the high temperatures and pressures typically encountered in geothermal systems. Their corrosion resistance and flexibility also make them a reliable choice for transporting geothermal fluid efficiently.

Q:Are ductile iron pipes suitable for use in brewery facilities?: Yes, ductile iron pipes are suitable for use in brewery facilities. Ductile iron pipes are durable, corrosion-resistant, and can withstand high-pressure applications, making them ideal for transporting water, steam, and other fluids within brewery facilities. Additionally, the smooth interior surface of ductile iron pipes minimizes friction and prevents the build-up of sediments or organic materials, ensuring the purity and quality of the beer being produced.

Q:Do ductile iron pipes require internal linings for potable water?: No, ductile iron pipes do not require internal linings for potable water. Ductile iron is a type of iron that has been treated to enhance its strength and flexibility. It is commonly used for water distribution systems due to its durability and resistance to corrosion. Unlike other materials, such as cast iron or steel, ductile iron pipes have a protective layer called a cement-mortar lining, which provides an effective barrier against corrosion and prevents the leaching of any harmful substances into the water. This lining is applied during the manufacturing process and is designed to withstand the corrosive properties of potable water, making internal linings unnecessary. Additionally, the smooth surface of ductile iron pipes helps to maintain the quality and flow of water without the need for additional linings.

Q:Are ductile iron pipes suitable for irrigation systems in agricultural fields?: Yes, ductile iron pipes are suitable for irrigation systems in agricultural fields. Ductile iron pipes have excellent strength, durability, and corrosion resistance, making them ideal for carrying water in irrigation systems. They can withstand high pressure and heavy loads, ensuring reliable water supply to agricultural fields for irrigation purposes.

Q:Can ductile iron pipe be used for power plant cooling water systems?: Yes, ductile iron pipe can be used for power plant cooling water systems. Ductile iron pipe is known for its strength, durability, and corrosion resistance, making it a suitable choice for transporting water in power plant cooling systems. Additionally, its ability to withstand high pressure and temperature variations makes it a reliable option for such applications.

Q:Do ductile iron pipes require special handling during transportation?: Yes, ductile iron pipes do require special handling during transportation. Ductile iron pipes are known for their strength and durability, but they can be susceptible to damage if not handled properly. These pipes are heavy and can be quite large in size, so it is important to use appropriate lifting and handling equipment during transportation. Special care should be taken to avoid dropping or impacting the pipes, as this can lead to cracks or fractures. Additionally, pipes should be stored and transported in a way that prevents them from rolling or shifting, which could cause damage to the pipe coating or fittings. It is also recommended to protect the pipes from exposure to extreme temperatures or weather conditions during transportation. By following these guidelines and taking the necessary precautions, the risk of damage to ductile iron pipes during transportation can be minimized.

Q:How are ductile iron pipes repaired if they get damaged?: Ductile iron pipes are typically repaired using various methods depending on the extent of the damage. Common repair techniques include spot repair, where damaged sections are cut out and replaced with new pipe sections, and trenchless repair methods such as pipe lining or pipe bursting. These methods minimize disruption and excavation while ensuring the structural integrity of the pipe is restored.

Q:Can ductile iron pipes be used for both water and sewage systems?: Ductile iron pipes can serve for both water and sewage systems, owing to their remarkable strength and durability. Renowned for their exceptional mechanical properties, these pipes can endure the immense pressure and stress encountered in such systems. Furthermore, their resistance to corrosion renders them optimal for transporting both clean water and sewage. Consequently, ductile iron pipes emerge as a dependable and adaptable option for water and sewage systems, given their wide-ranging applications.

Q:What is the expected maintenance for ductile iron pipes?: The expected maintenance for ductile iron pipes involves regular inspections and preventative measures to ensure their longevity and optimal performance. Firstly, it is important to conduct routine visual inspections to identify any signs of corrosion, leaks, or other forms of damage. Inspecting the external surface for any signs of cracks, rust, or discoloration can help detect potential issues early on. Furthermore, periodic cleaning of the pipes is necessary to remove any debris or sediment buildup that may obstruct the flow of water. This can be achieved through flushing the pipes or using mechanical cleaning methods. Additionally, it is crucial to regularly check and maintain the protective coatings on the pipes, such as linings or external paints, to prevent corrosion and maintain their structural integrity. In terms of preventative maintenance, implementing a comprehensive corrosion control program can significantly extend the lifespan of ductile iron pipes. This can involve the application of corrosion inhibitors, cathodic protection systems, and periodic re-coating of the pipes. Regular monitoring of water chemistry parameters, such as pH levels and chlorine content, can also help prevent corrosion and extend the life of the pipes. Lastly, it is essential to keep accurate records of maintenance activities, including inspections, cleaning, and repairs, to track the condition of the pipes over time. This enables proactive planning for future maintenance and replacement needs, ultimately ensuring the efficient and reliable functioning of ductile iron pipes.

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