DUCTILE IRON PIPE C Class 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 prone to external corrosion?
- Yes, ductile iron pipes are prone to external corrosion.
- Q: Can ductile iron pipe be used for trenchless installation methods?
- Trenchless installation methods, such as horizontal directional drilling (HDD) or pipe bursting, are capable of utilizing ductile iron pipe. These techniques allow for the installation of underground utilities with minimal excavation and disturbance to the surrounding environment. Ductile iron pipe is particularly well-suited for these methods due to its inherent strength, durability, and flexibility. It can withstand the forces and stress associated with trenchless installation, including the pulling forces during HDD or the bursting forces during pipe bursting. Furthermore, ductile iron pipe's corrosion resistance eliminates the need for protective coatings when installed underground. Consequently, ductile iron pipe is a dependable choice for trenchless installation methods.
- Q: What are the common methods for cutting ductile iron pipes?
- Cutting ductile iron pipes can be done using various methods, depending on the specific requirements and available tools. 1. For smaller diameter pipes, a hand saw with a carbide-tipped blade is commonly used. However, this method requires physical effort and can be time-consuming. 2. A more efficient option is using a reciprocating saw with a diamond or carbide abrasive blade. This power tool allows for faster cutting and requires less physical effort. 3. Another popular method is using a cut-off saw, also known as a chop saw or disc cutter. Equipped with a diamond or abrasive blade, this power tool provides precise and fast cuts, making it suitable for both small and large diameter pipes. 4. Cutting larger diameter ductile iron pipes can be achieved using a band saw with a bi-metal or carbide-tipped blade. This method allows for clean and precise cuts, but it may require specialized equipment and expertise. 5. In cases where other cutting tools are not available, a grinding wheel with a diamond or abrasive disc can be used for cutting smaller diameter pipes. It is crucial to follow proper safety precautions when cutting ductile iron pipes. This includes wearing appropriate protective gear and using clamps or vices to secure the pipe during cutting. It is also recommended to consult professionals or refer to manufacturers' guidelines for specific recommendations on cutting ductile iron pipes.
- Q: How does ductile iron pipe perform in high-temperature steam applications?
- In high-temperature steam applications, ductile iron pipe performs admirably. Ductile iron, renowned for its strength and durability, possesses the capability to endure high pressures and temperatures. When subjected to high-temperature steam, ductile iron pipes retain their structural integrity and are not easily deformed or cracked. They possess a remarkable resistance to thermal expansion and contraction, rendering them suitable for situations where temperature fluctuations are common. Furthermore, ductile iron pipes exhibit exceptional corrosion resistance, a crucial characteristic in steam applications where the presence of moisture can accelerate corrosion. All in all, ductile iron pipes are a dependable choice for high-temperature steam applications, delivering enduring performance and ensuring the secure and efficient transportation of steam.
- Q: Are ductile iron pipes suitable for horizontal directional drilling (HDD) installations?
- Yes, ductile iron pipes are suitable for horizontal directional drilling (HDD) installations. They possess the necessary strength and flexibility to withstand the drilling process and can be easily installed underground without compromising their structural integrity.
- Q: Are ductile iron pipes suitable for installation in areas with high soil compaction?
- Yes, ductile iron pipes are suitable for installation in areas with high soil compaction. Ductile iron pipes are known for their strength and durability, making them highly resistant to external loads and pressures. The material's inherent flexibility allows it to withstand the stresses caused by high soil compaction. Additionally, ductile iron pipes have a high modulus of elasticity, which helps them maintain their shape and structural integrity even under heavy loads. Therefore, they are an excellent choice for areas with high soil compaction, as they can effectively handle the pressure and provide reliable and long-lasting performance.
- Q: What is the difference between ductile iron pipes and cast iron pipes?
- Ductile iron pipes and cast iron pipes have different compositions, properties, manufacturing processes, and applications. Ductile iron pipes are made from a type of cast iron known as ductile iron, which contains higher levels of carbon, silicon, and other alloying elements like magnesium. On the other hand, cast iron pipes are made from regular cast iron, which has a higher carbon content and lower levels of alloying elements. In terms of properties, ductile iron pipes are recognized for their high tensile strength, flexibility, and durability. They can withstand higher pressure and have a greater resistance to impact, making them suitable for applications that demand robust performance. Conversely, cast iron pipes are more brittle and fragile, making them susceptible to cracking or breaking under pressure or impact. The manufacturing process differs as well. Ductile iron pipes are formed through centrifugal casting, in which molten ductile iron is poured into a spinning mold. This centrifugal force aids in the even distribution of the molten metal, resulting in a strong and uniform pipe. On the other hand, cast iron pipes are made using sand casting, where molten cast iron is poured into a mold made of compacted sand. This method is less precise and can result in variations in the final product. In terms of applications, ductile iron pipes are commonly used in water and sewage systems, as well as in industrial pipelines that require high-pressure resistance. Cast iron pipes, on the other hand, are typically used in non-pressure applications such as drainage systems or underground sewer lines. To summarize, ductile iron pipes and cast iron pipes differ in their composition, properties, manufacturing processes, and applications. Ductile iron pipes offer greater strength, flexibility, and durability, making them suitable for high-pressure applications, while cast iron pipes are more brittle and commonly used in non-pressure applications.
- Q: What are the different pressure classes available for ductile iron pipes?
- The different pressure classes available for ductile iron pipes typically range from Class 150 to Class 350.
- Q: Can ductile iron pipes be used in contaminated soil conditions?
- Yes, ductile iron pipes can be used in contaminated soil conditions. Ductile iron is known for its strength and durability, making it resistant to corrosion and damage from external factors such as soil contaminants. Additionally, ductile iron pipes have been successfully used in a variety of challenging environments, including contaminated soils, where they can provide reliable and long-lasting underground infrastructure for the transportation of water and other fluids.
- Q: What are the advantages and disadvantages of spheroidal graphite cast iron?
- Compared with cast iron, ductile iron has an absolute advantage in strength. The tensile strength of ductile iron is 60K, while the tensile strength of cast iron is only 31k. The yield strength of ductile iron is 40K, while the cast iron does not show yield strength, and eventually breaks. The strength to cost ratio of ductile iron is far superior to that of cast iron.
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DUCTILE IRON PIPE C Class DN1400
- Ref Price:
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- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
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