DUCTILE IRON PIPE 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: Can ductile iron pipes be used in seismic zones?
- Indeed, in seismic zones, ductile iron pipes are suitable for use. These pipes possess remarkable strength and flexibility, enabling them to endure ground movement and seismic events. Their capacity to absorb and disperse the forces generated by earthquakes reduces the likelihood of pipe failure or harm. Moreover, ductile iron pipes have been effectively employed in seismic zones for numerous years, with their performance confirmed by various examinations and assessments. Nevertheless, adhering to the proper design and installation guidelines is crucial to guarantee the optimal operation and safety of ductile iron pipes in seismic zones.
- Q: Does the cast iron pipe for spheroidal graphite need corrosion protection when laying underground?
- Ductile cast iron pipe after annealing, the microstructure is ferrite and pearlite, good mechanical properties, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc..
- Q: What is the expected fire resistance of ductile iron pipes?
- The expected fire resistance of ductile iron pipes is high due to their ability to withstand high temperatures without losing structural integrity. They have a melting point of approximately 1200°C, making them suitable for applications where fire protection is crucial.
- Q: Can ductile iron pipe be used for geothermal heat exchange systems?
- Yes, ductile iron pipe can be used for geothermal heat exchange systems. Ductile iron pipe is known for its strength and durability, making it suitable for underground applications such as geothermal heat exchange systems. Additionally, it has good corrosion resistance and can withstand high temperatures, which are important factors in geothermal systems.
- Q: Can ductile iron pipes be used for above-ground installations?
- Ductile iron pipes are capable of being utilized for installations above the ground. Ductile iron, a form of cast iron, possesses enhanced tensile strength and flexibility, rendering it appropriate for a wide range of applications, including installations above the ground. It is commonly employed in water distribution systems, sewage systems, and industrial pipelines. Ductile iron pipes exhibit resistance to corrosion, can endure high pressure and temperature, and boast an extended lifespan. They are additionally accessible in various sizes and can be effortlessly linked using diverse types of joints. However, it is imperative to guarantee adequate support and safeguard against external elements like sunlight and impact to avert any potential harm.
- Q: Can ductile iron pipe be used for underground storage tank systems?
- Certainly, underground storage tank systems can utilize ductile iron pipe. Renowned for its robustness and potency, ductile iron pipe proves itself adaptable for diverse purposes, including underground storage tanks. Its exceptional tensile strength and immunity to corrosion render it a superb selection for confining and conveying liquids or gases in subterranean settings. Furthermore, ductile iron pipe exhibits remarkable resistance to external pressures and endures substantial burdens, establishing it as a dependable choice for underground storage tank systems.
- Q: What are the disadvantages of using ductile iron pipes?
- Using ductile iron pipes in various applications comes with several drawbacks. Firstly, these pipes tend to be more expensive compared to other types like PVC or HDPE, which can be problematic for projects with budget constraints. Secondly, their relatively heavy weight makes transportation and installation more labor-intensive and time-consuming. This increases overall project costs, especially when specialized equipment and skilled workers are required. Another disadvantage is their susceptibility to corrosion. Exposure to environmental factors, like soil conditions and water chemistry, can lead to rust and scale formation on the inner and outer surfaces of the pipe. This reduces the pipe's lifespan and potentially affects water quality. Furthermore, ductile iron pipes can crack or break under certain conditions, especially when subjected to heavy loads or significant ground movement. This necessitates costly repairs or replacements, causing additional expenses and disruptions to the water supply. Lastly, ductile iron pipes have relatively low resistance to impact and abrasion compared to other materials. This makes them more vulnerable to damage from external forces, such as construction activities or accidental impacts, resulting in increased maintenance and repair costs. In conclusion, while ductile iron pipes have advantages like high tensile strength and durability, it is crucial to consider these disadvantages before deciding to use them in a specific project.
- Q: What does "K8" mean in ductile iron pipe grades?
- 1 ductile iron pipe grade K8, on behalf of the ductile iron 8 grades, K refers to the wall thickness coefficient, the higher the grade, the greater the pressure, the lower the level, the less pressure to bear.2 wall thickness calculation formula: e=K (0.5+0.001DN).
- Q: Usage of ductile iron pipe expander
- Spheroidal graphite iron expander, also known as cast iron telescopic device, is a new type of pipe connector.
- Q: The plug connection DN800 ductile iron pipe has been installed. "Shall I think so?"
- In many areas of our country, ductile iron pipe in the middle and small diameter to tube connected with the tube, the bearing type or flange interface method; ductile iron, angle limit must be allowed better seismic performance and sealing performance.
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DUCTILE IRON PIPE C Class DN900
- Ref Price:
-
- 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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