DUCTILE IRON PIPE C Class DN150
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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 power plant cooling systems?
- Yes, ductile iron pipes are suitable for power plant cooling systems. Ductile iron pipes offer several advantages that make them ideal for such applications. Firstly, ductile iron is known for its high strength and durability, making it capable of withstanding the high pressure and heavy loads often associated with power plant cooling systems. Additionally, ductile iron pipes have excellent resistance to corrosion, which is crucial in an environment where water and other cooling fluids are constantly flowing. Furthermore, ductile iron pipes have good thermal conductivity, meaning they can efficiently transfer heat away from the power plant equipment, contributing to the overall cooling process. Lastly, ductile iron pipes are also cost-effective compared to other materials commonly used in power plant cooling systems, making them a practical choice for such applications. Overall, ductile iron pipes are a reliable and suitable option for power plant cooling systems due to their strength, corrosion resistance, thermal conductivity, and cost-effectiveness.
- Q:What are the typical lengths of ductile iron pipes?
- The typical lengths of ductile iron pipes can vary depending on the specific project requirements and industry standards. However, commonly used lengths for ductile iron pipes range from 18 feet (5.5 meters) to 20 feet (6 meters). These lengths are suitable for various applications such as water distribution, wastewater systems, and industrial pipelines. It is important to note that custom lengths can also be manufactured to meet specific project needs.
- Q:How do ductile iron pipes handle ground settlement?
- Ductile iron pipes have the ability to withstand ground settlement due to their flexibility and resilience. The inherent ductility of the material allows the pipes to absorb and distribute the stress caused by ground movement, minimizing the risk of damage or failure. Additionally, the joints of ductile iron pipes are designed to provide flexibility, allowing for slight movement and accommodating ground settlement without compromising the integrity of the pipeline system.
- Q:What is the composition of ductile iron pipes?
- Ductile iron pipes are primarily composed of iron, with small amounts of carbon, silicon, manganese, and trace elements such as sulfur and phosphorus.
- Q:Are ductile iron pipes resistant to sulfuric acid corrosion?
- Generally, ductile iron pipes exhibit resistance to corrosion caused by sulfuric acid. Ductile iron, known for its strength and durability, contains a substantial amount of iron, which renders it less vulnerable to the harmful effects of sulfuric acid compared to materials like cast iron or steel. Nevertheless, it is crucial to consider that the degree of resistance can vary depending on factors such as the concentration and temperature of the sulfuric acid, as well as the duration of exposure. In scenarios where the acid is highly concentrated or the temperature is elevated, additional precautions may be required to guarantee long-term protection against sulfuric acid corrosion. These measures could include lining the pipes with suitable materials or employing corrosion inhibitors.
- Q:What are the common methods for leak detection in ductile iron pipes?
- There are several common methods for leak detection in ductile iron pipes. These methods are widely used by professionals in the field to identify and locate leaks in a timely manner. 1. Acoustic Leak Detection: This method involves using specialized equipment to listen for the sound of water escaping from the pipe. The equipment detects the sound of the leak and helps pinpoint its location. This method is effective for both pressurized and non-pressurized pipes. 2. Visual Inspection: Visual inspection involves physically inspecting the pipe system for any visible signs of leaks such as water stains, wet spots, or puddles. This method is relatively simple and can be effective for detecting visible leaks in accessible areas. 3. Pressure Testing: Pressure testing involves pressurizing the pipe system and monitoring for any drops in pressure. If there is a leak, the pressure will drop, indicating its presence. This method is commonly used during installation or maintenance and can help identify leaks in inaccessible areas. 4. Infrared Thermography: Infrared cameras are used to detect leaks by measuring temperature differences. Water escaping from a pipe can create a temperature difference, which can be detected by the camera. This method is particularly effective for identifying hidden leaks behind walls or underground. 5. Tracer Gas Testing: Tracer gas testing involves injecting a specific gas, such as helium or hydrogen, into the pipe system. If there is a leak, the gas will escape and can be detected using specialized equipment. This method is highly sensitive and can locate even small leaks. 6. Soil Gas Monitoring: This method involves monitoring the soil around the pipe for the presence of gases emitted by leaking water. By analyzing the soil gas composition, professionals can determine the location of the leak. It is important to note that the choice of method may vary depending on the specific circumstances, such as the size of the pipe system, accessibility, and severity of the leak. In some cases, a combination of methods may be used to ensure accurate and comprehensive leak detection.
- Q:What are the typical pressure surge protection measures for ductile iron pipe?
- Some typical pressure surge protection measures for ductile iron pipe include using surge tanks or pressure relief valves, installing air valves or surge anticipation valves, and implementing proper anchoring and support systems to minimize movement and stress on the pipe during pressure surges. Additionally, using flexible joints or expansion joints can help absorb and accommodate sudden changes in pressure.
- Q:How does ductile iron pipe handle changes in pipe diameter or size?
- Ductile iron pipe offers a convenient solution for dealing with alterations in pipe diameter or size. Its excellent flexibility and capacity to adapt to changes in pipe dimensions without compromising its structural integrity are a result of its unique composition, which contains a significant amount of graphite nodules that provide ductility and elasticity to the material. When faced with adjustments in pipe diameter or size, ductile iron pipe can be easily manufactured or modified to meet specific requirements. It can be cast or fabricated in different diameters and lengths, allowing for seamless integration and adaptability within a pipeline system. This versatility proves particularly advantageous when connecting different pipe sizes or making alterations to the pipeline layout. Furthermore, the superior mechanical properties of ductile iron pipe enable it to withstand the stresses and forces associated with changes in pipe diameter or size. It possesses high tensile strength, impact resistance, and durability, ensuring its ability to handle the internal and external pressures exerted on the pipe during operations. Moreover, the jointing systems employed with ductile iron pipe contribute to its ability to handle changes in diameter or size. Various joint types, including push-on, restrained, or mechanical joints, provide secure and leak-free connections between different pipe sections. These joints facilitate easy assembly and disassembly, enabling efficient adjustments to the pipe diameter or size as required. In conclusion, ductile iron pipe is well-equipped to handle changes in pipe diameter or size due to its inherent flexibility, adaptability, and robustness. Its composition, manufacturing capabilities, and jointing systems all contribute to its capacity to accommodate variations in pipe dimensions without compromising its performance.
- Q:How does ductile iron pipe handle temperature changes?
- Ductile iron pipe is known for its ability to handle temperature changes effectively. The unique properties of ductile iron make it highly resistant to thermal expansion and contraction, allowing it to withstand extreme temperature variations without significant deformations or failures. When exposed to temperature changes, ductile iron pipes can expand or contract within certain limits due to its inherent ductility. This flexibility helps to accommodate thermal stresses and prevent the pipe from cracking or breaking. The material's high tensile strength and elasticity also contribute to its ability to handle temperature changes without significant structural damage. Moreover, ductile iron pipes have a low coefficient of thermal expansion, meaning they expand and contract at a relatively slow rate compared to other materials. This characteristic minimizes the potential for stress on the pipe joints and reduces the risk of leaks or failures. In addition to its excellent thermal stability, ductile iron pipe also features a protective lining that further enhances its resistance to temperature changes. The linings, such as cement mortar or polyethylene, create a barrier between the pipe and the transported fluid, preventing any adverse effects caused by thermal variations on the pipe's internal surface. Overall, ductile iron pipe is a reliable choice for applications where temperature changes are common. Its ability to withstand thermal stresses, low coefficient of thermal expansion, and protective linings make it a durable and efficient solution for various infrastructural needs, including water distribution, wastewater management, and industrial applications.
- Q:Are ductile iron pipes suitable for oil and gas pipeline applications?
- Yes, ductile iron pipes are suitable for oil and gas pipeline applications. Ductile iron pipes have numerous properties that make them ideal for use in such applications. Firstly, ductile iron pipes have high tensile strength, which allows them to handle the high pressure and stress associated with oil and gas transmission. This ensures that the pipes can withstand the demanding conditions and maintain structural integrity over time. Secondly, ductile iron pipes are highly resistant to corrosion. Oil and gas pipelines are exposed to various corrosive elements, such as water, chemicals, and salts. Ductile iron pipes have a protective lining, typically made of cement mortar or polyethylene, which prevents corrosion and extends the lifespan of the pipes. Additionally, ductile iron pipes have excellent durability and longevity. They have a long service life, typically ranging from 50 to 100 years, depending on the specific conditions and maintenance practices. This makes them a reliable choice for oil and gas pipeline applications, reducing the need for frequent replacements and minimizing downtime. Furthermore, ductile iron pipes have good flexibility, allowing them to withstand ground movement and absorb shocks and vibrations. This flexibility is particularly important in oil and gas pipeline applications, where the pipes need to adapt to changing terrain and environmental conditions. Lastly, ductile iron pipes are cost-effective compared to other materials commonly used in oil and gas pipelines, such as steel. They offer a favorable balance between performance and price, making them a practical choice for both large-scale and small-scale pipeline projects. Overall, the combination of high tensile strength, corrosion resistance, durability, flexibility, and cost-effectiveness makes ductile iron pipes suitable for oil and gas pipeline applications.
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DUCTILE IRON PIPE C Class DN150
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
OKorder Financial Service
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