DUCTILE IRON PIPES K8 DN1400

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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: Are ductile iron pipes suitable for potable water distribution systems?: Ductile iron pipes are well-suited for the distribution of drinking water in potable water systems. Ductile iron, a form of cast iron, is renowned for its strength and durability, making it an ideal choice for transporting drinking water. These pipes possess corrosion resistance, a crucial factor in preserving the safety and quality of potable water. Moreover, their smooth inner surface helps prevent the accumulation of sediments and biofilms that can negatively impact water quality. Furthermore, they can withstand high pressure and temperature fluctuations, rendering them suitable for diverse potable water distribution systems. In summary, ductile iron pipes are a dependable and widely employed solution for ensuring the provision of safe and uncontaminated drinking water to communities.

Q: Are ductile iron pipes suitable for use in geothermal applications?: Yes, ductile iron pipes are suitable for use in geothermal applications. Geothermal systems involve harnessing the Earth's heat to generate energy or provide heating and cooling for buildings. Ductile iron pipes are known for their strength, durability, and corrosion resistance, all of which are vital qualities for geothermal applications. Geothermal systems often operate at high temperatures and pressures, and ductile iron pipes can withstand these conditions without compromising their structural integrity. They can handle the thermal expansion and contraction that occur in geothermal systems, ensuring a reliable and long-lasting piping solution. Furthermore, ductile iron pipes have excellent resistance to corrosion, making them well-suited for the potentially corrosive environment found in geothermal applications. This resistance ensures that the pipes will not degrade over time, maintaining the integrity of the system and minimizing the risk of leaks or failures. Additionally, ductile iron pipes have a smooth interior surface, which helps to minimize pressure loss and reduce energy consumption in geothermal systems. Their smoothness also reduces the likelihood of mineral deposits or scaling buildup, ensuring efficient and uninterrupted heat transfer. Overall, ductile iron pipes are a suitable choice for geothermal applications due to their strength, durability, corrosion resistance, thermal stability, and smooth interior surface. They provide a reliable and efficient piping solution that can withstand the demanding conditions of geothermal systems while ensuring long-term performance and minimal maintenance requirements.

Q: What are the specifications of cast iron pipes?: The nominal diameter of the continuous grey cast iron pipe is 75~1200 mm. It adopts the form of socket type or flange disk interface. It can be divided into two kinds of flexible interface and rigid interface according to function. The length of the straight pipe is 4 meters, 5 meters and 6 meters. According to the wall thickness, LA, A and B are divided into three grades. The nominal diameter of the centrifugal cast iron pipe of the sand mould is 200~1000 mm, the effective length is 5 meters and 6 meters. According to the wall thickness, it is divided into two grades: P and G. High strength, good toughness, thin tube wall, little metal consumption, and can bear higher pressure,

Q: How do ductile iron pipes handle thermal cycling in industrial applications?: Ductile iron pipes are known for their exceptional ability to handle thermal cycling in industrial applications. Thermal cycling refers to the fluctuation in temperature that occurs during the operation of various industrial processes. These pipes are designed to withstand the stresses caused by thermal expansion and contraction, making them highly suitable for environments with significant temperature variations. One of the key characteristics of ductile iron pipes is their high thermal conductivity. This means that they can efficiently conduct heat away from the hot areas, minimizing the impact of thermal cycling. Additionally, ductile iron pipes have a low coefficient of thermal expansion, which means that they expand and contract at a slower rate compared to other materials. This helps to reduce the stresses imposed on the pipes during thermal cycling. Furthermore, ductile iron pipes have excellent mechanical properties, including high tensile strength and impact resistance. These properties enable the pipes to withstand the mechanical stresses that may arise due to thermal cycling. They can resist the formation of cracks or fractures, ensuring the integrity and longevity of the pipes in industrial applications. Moreover, ductile iron pipes have a high resistance to corrosion and oxidation. This is particularly important in industrial settings where the pipes may be exposed to aggressive chemicals or harsh environments. The corrosion resistance of ductile iron pipes ensures that they can withstand the corrosive effects of the process fluids and gases, even during thermal cycling. In summary, ductile iron pipes are well-equipped to handle thermal cycling in industrial applications. Their high thermal conductivity, low coefficient of thermal expansion, excellent mechanical properties, and resistance to corrosion make them a reliable choice for environments with significant temperature variations. These pipes can effectively withstand the stresses caused by thermal cycling, ensuring their durability and longevity in industrial settings.

Q: Can ductile iron pipe be used for irrigation pumping stations?: Indeed, irrigation pumping stations can utilize ductile iron pipe. This type of pipe finds widespread application, particularly in irrigation systems, owing to its robustness and resilience. Its exceptional tensile strength enables it to endure substantial pressure and weight, rendering it highly suitable for irrigation pumping stations. Furthermore, ductile iron pipe exhibits resistance to corrosion, a desirable trait in the presence of water within irrigation systems. Moreover, its ease of installation and maintenance make it an economical selection for irrigation projects.

Q: How long does the cast iron pipe of indoor direct buried sewage need to be examined?: Cast iron pipe, 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. According to the interface form, it is divided into flexible interface, flange interface, self anchored interface, rigid interface and so on.

Q: What is the manufacturing process of ductile iron pipes? Thank you: Made of nodular cast iron: a strict chemical composition, the content of silicon in molten iron requirements than the original carbon gray cast iron, nodular cast iron in reduced manganese, phosphorus, sulfur content of two liquid iron tapping temperature cast iron is higher than the ash, than the compensation sphere, conceived at the disposal of liquid iron temperature. Off line ball three disposal, that is to add a liquid iron ball agent four inoculation disposal of five nodular cast iron activity is poor, thus shorten the larger, higher demand for pouring temperature and pouring system larger size, more use of the riser cold iron by one condensation heat treatment criterion six iron is iron carbon alloy carbon content greater than 2%, the carbon content in ordinary industrial pig iron containing C, SI and 2.5%--4%, and Mn, S, P and other elements, is a product of iron ores in blast furnace. According to the difference in the shape of the carbon in the pig iron, it can be divided into several kinds, such as steelmaking pig iron, forging pig iron and nodular cast iron.

Q: Are ductile iron pipes suitable for use in chemical processing plants?: Yes, ductile iron pipes are suitable for use in chemical processing plants. Ductile iron is known for its high strength and durability, making it resistant to corrosion and capable of withstanding high pressure and extreme temperatures. Additionally, its smooth internal surface reduces friction and allows for efficient flow of chemicals.

Q: Are ductile iron pipes suitable for deep burial installations?: Yes, ductile iron pipes are suitable for deep burial installations. Ductile iron is known for its durability and strength, which makes it capable of withstanding the pressure and weight of being buried deep underground. Additionally, ductile iron is highly resistant to corrosion, which further enhances its suitability for long-term underground applications.

Q: Are ductile iron pipes suitable for potable water systems?: Indeed, potable water systems can utilize ductile iron pipes without any issues. For numerous years, these pipes have been extensively employed in potable water systems due to their exceptional endurance, robustness, and resistance to corrosion. Their construction enables them to withstand high-pressure water flow and successfully tackle the challenges associated with underground installation. Additionally, the smooth internal surface of ductile iron pipes effectively prevents the accumulation of scale or sediment, guaranteeing the provision of sanitary and safe drinking water. Moreover, their extended lifespan renders them a cost-effective alternative for potable water systems. In summary, ductile iron pipes are an unquestionably dependable and widely embraced choice for potable water supply networks.

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