DUCTILE IRON PIPES C Class DN900
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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 road crossings?
- Yes, ductile iron pipes are suitable for road crossings. Ductile iron is a strong and durable material, making it well-suited for underground installations such as road crossings. The pipes have high tensile strength, which allows them to withstand heavy loads and traffic pressures without cracking or breaking. Ductile iron pipes also have excellent corrosion resistance properties, ensuring their longevity even in harsh environments. Additionally, these pipes are easy to install and maintain, making them a reliable choice for road crossings.
- Q:Does centrifugal cast iron pipe work well with lining cement? Will it scale and breed bacteria?
- From the centrifugal ductile cast iron pipe with cement production process to analysis, the most core pipe by centrifugal molding, concrete water cement ratio, the centrifugal force, the coarse aggregate to the outer wall of the pipe and the pipe inside; because of fine aggregate and water removal, strength and wear resistance variation. When the inner wall of the pipe by long-term washing and soaking water, and inner wall wear and erosion, as the roughness increases, head loss increases, you will need to increase the pump lift, and operation cost for power consumption increases, also greatly increased.
- Q:Method for cutting cast iron pipe
- Generally cast iron pipe wall thickness, crisp texture, with traditional saw blade, saw blade cutting, very expensive cutting materials, and cutting accuracy is not high. Nowadays, the cutting tools and cutting machines on the market cut off these kinds of pipes, which are fast and cutting tools. Because the length of the pipe is not cut, the pipe can be continuously cut for a while after the equipment is loaded on the equipment. The worker can spare more time and can realize the operation of more than one machine, thus greatly improving the cutting efficiency. Rotary tool pipe cutting machine cutting cast iron pipe sawdust granular, easy chip removal, cutting section of vertical high, smooth surface without burr. The current equipment has been widely used in cast iron pipe cutting, especially iron pipe cutting, even cylinder car production.
- Q:How are ductile iron pipes protected against external soil loads?
- Ductile iron pipes are protected against external soil loads through a combination of proper installation techniques and the use of protective coatings. The pipes are installed in a manner that allows for adequate support and backfilling, which helps distribute the external soil loads evenly. Additionally, these pipes are often coated with materials such as epoxy or polyethylene to provide a barrier between the pipe and the surrounding soil, preventing corrosion and damage from external forces. This protective coating ensures the longevity and durability of ductile iron pipes in underground applications.
- Q:Are ductile iron pipes suitable for horizontal auger boring installations?
- Yes, ductile iron pipes are suitable for horizontal auger boring installations. Ductile iron pipes have excellent strength and durability, making them ideal for underground installations. They can withstand the lateral forces and vibrations involved in auger boring, ensuring a reliable and long-lasting pipeline system.
- Q:Do ductile iron pipes require special maintenance?
- Ductile iron pipes do not require special maintenance. They are known for their durability and longevity, requiring minimal maintenance over their lifespan. Regular inspections and occasional cleaning are typically sufficient to ensure their optimal performance.
- Q:Advantages and disadvantages of ductile iron pipes
- The ductile iron pipe is widely used not only in foreign countries, and has also been in the country to promote the use of good, in many areas of our country, ductile iron pipe has been widely used in medium and small diameter water supply pipe; compare the performance of ductile iron pipe and steel pipe: steel pipe can be divided into seamed steel pipe and seamless in the water supply pipe, commonly used in welded tube. Compared with ductile iron pipes, the steel tube has the advantages of good toughness, high tensile strength, thin tube wall, high pressure resistance, long pipes and less interfaces. The biggest drawback is that the corrosion resistance is poor and the price is high. So, in general, except for small bore pipes and special projects (such as pipe jacking works);
- Q:How are ductile iron pipes installed?
- Ductile iron pipes are typically installed using a variety of methods, including trenching or open-cut excavation, horizontal directional drilling, and pipe bursting. In the traditional trenching method, a trench is dug to the required depth and slope, and the pipe is then lowered into place and joined using mechanical or push-on joints. Horizontal directional drilling involves drilling a pilot hole and then pulling the pipe through it, while pipe bursting involves breaking the existing pipe and replacing it with a new ductile iron pipe.
- Q:Can ductile iron pipe be used for water well applications?
- Yes, ductile iron pipe can be used for water well applications. Ductile iron pipe is known for its strength and durability, making it suitable for various applications including water well systems. It has excellent corrosion resistance, which is crucial for water well applications where the pipe is constantly exposed to water and potential contaminants. Additionally, ductile iron pipe has the ability to withstand high pressure and external loads, making it a reliable choice for water well systems that require a strong and long-lasting pipe material.
- Q:Can ductile iron pipe be used for industrial applications?
- Yes, ductile iron pipe can be used for industrial applications. Ductile iron pipe is known for its strength, durability, and flexibility, making it suitable for a wide range of industrial settings. It is commonly used for transporting water, wastewater, and other fluids in industrial facilities such as power plants, chemical plants, refineries, and manufacturing plants. Ductile iron pipe is resistant to corrosion, which is important in industrial environments where the pipes may be exposed to chemicals, high temperatures, or abrasive materials. Additionally, its high tensile strength allows it to withstand high-pressure applications, making it ideal for industrial use. Overall, ductile iron pipe is a reliable and cost-effective choice for various industrial applications.
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DUCTILE IRON PIPES C Class DN900
- Ref Price:
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- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
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- Supply Capability:
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