DUCTILE IRON PIPES AND PIPE FITTINGS K9 CLASS DN1200

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 22 pc

Supply Capability:: 3000 pc/month

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Material : Ductile Cast Iron
Size Range : DN 80mm to DN 2000mm
Unit Effective Length : 6m or 5.7m
Manufacture Standard: ISO 2531:1998/ EN 545:2006/EN 598:2007
Annual capacity : 200,000 tons
Coating Exterior: Zinc 130g/m2 according to ISO 8179-1 and bitumen coating 70 microns.
Cement Interior: Portland Cement/ High Alumina Cement/ Sulphate Resisting Cement Lining according to ISO 4179
Special requirements on external coating and internal lining can be applied
We also provide accessories such as SBR/EPDM rubber gaskets, lubricant paste, pipe caps, PE sleeves, etc.

Additional Parts:

Each pipe is strictly inspected according to related standard to ensure permanently high performance.
Easy Installation at site and service free for life
Long Service Lifespan
Quotation will arrive you within 24hours once we get your inquiry.
We guarantee offering you a competitive price.
A copy of original inspection reports of pipes will be offered after shipment.
Photos of loading process will be sent to the customer after shipment effect.
We will follow-up the delivery progress after shipment effect and update to the customer on weekly basis.

Q: What is the purpose of ductile iron pipes?: The purpose of ductile iron pipes is to provide a strong and durable infrastructure for transporting various fluids, including water, sewage, and industrial materials. Their high tensile strength and flexibility make them ideal for withstanding high-pressure conditions, resisting corrosion, and accommodating ground movements, ensuring efficient and reliable delivery of essential resources.

Q: How are ductile iron pipes protected against internal corrosion caused by chemicals?: Ductile iron pipes are protected against internal corrosion caused by chemicals through a combination of several protective measures. Firstly, these pipes are usually lined with a cement mortar lining or an epoxy coating. This lining acts as a barrier between the chemical substances in the water or sewage and the iron material of the pipe, preventing direct contact and corrosion. In addition to the lining, a corrosion-resistant polymer or bituminous coating is often applied to the exterior of the ductile iron pipes. This coating serves as an extra layer of protection, safeguarding the pipe against any external chemical exposure that may occur. Furthermore, cathodic protection is commonly employed to prevent internal corrosion. This technique involves the use of sacrificial anodes, typically made of zinc or magnesium, which are attached to the pipe. The anodes corrode over time instead of the iron, effectively sacrificing themselves to protect the pipe from corrosion caused by chemicals. Regular maintenance and monitoring of the ductile iron pipes are also crucial in preventing and addressing any potential corrosion issues. This includes routine inspections, cleaning, and repairing any damaged or corroded areas promptly. Overall, the combination of lining, external coating, cathodic protection, and maintenance practices ensures that ductile iron pipes are well-protected against internal corrosion caused by chemicals, prolonging their lifespan and ensuring the integrity of the pipeline system.

Q: What are the different coating thickness options for ductile iron pipe?: The different coating thickness options for ductile iron pipe vary depending on the specific application and requirements. However, common coating thickness options for ductile iron pipe range from 200 to 400 microns.

Q: What are the different pressure classes available for ductile iron pipes?: There are several pressure classes available for ductile iron pipes, which are typically used for water and wastewater applications. The most common pressure classes for ductile iron pipes include Class 150, Class 200, Class 250, Class 300, and Class 350. These pressure classes indicate the maximum working pressure that the pipe can withstand in pounds per square inch (psi). Class 150 ductile iron pipes have a maximum working pressure of 150 psi, while Class 200 pipes can handle up to 200 psi. Class 250 pipes can withstand pressures up to 250 psi, and Class 300 pipes have a maximum working pressure of 300 psi. The highest pressure class, Class 350, can handle pressures up to 350 psi. The selection of the appropriate pressure class for a ductile iron pipe depends on various factors such as the system design, fluid characteristics, and operating conditions. It is important to consult the relevant standards and guidelines, such as the American Water Works Association (AWWA) standards, to determine the appropriate pressure class for a specific application. It is worth noting that these pressure classes refer to the working pressure of the pipe, which is the pressure the pipe is designed to safely contain during normal operation. The pipes are typically tested and certified to ensure they meet the required pressure class standards.

Q: Are ductile iron pipes resistant to hydrogen sulfide corrosion?: Yes, ductile iron pipes are generally resistant to hydrogen sulfide corrosion. Ductile iron is a type of cast iron that has been treated with magnesium to create a more flexible and durable material. This treatment significantly enhances its resistance to corrosion, including corrosion caused by hydrogen sulfide. The magnesium in the ductile iron forms a protective layer on the surface, preventing the penetration of hydrogen sulfide and other corrosive agents. However, it is important to note that the resistance of ductile iron pipes to hydrogen sulfide corrosion can still be influenced by factors such as the concentration and duration of exposure to the corrosive environment. Therefore, proper maintenance, regular inspection, and appropriate protective measures should still be implemented to ensure the long-term durability and performance of ductile iron pipes in the presence of hydrogen sulfide.

Q: How to properly maintain FRP pipes: The wall of the pipe is smoothReduce flow resistance, increase flow speed and reduce energy consumption. Compared with the same size steel pipe, the flow rate of the same volume can be increased by about 10%, and no fouling and long-term use can not reduce the flow rate. The protection of cables in interference and heavy corrosion environment is better.

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.

Q: Is the ambient temperature at minus 20 degrees better with grey cast iron or ductile iron?: Heavy thermal and mechanical shock, high temperature or low temperature, corrosion resistance and dimensional stability. To meet these changes in use conditions, ductile iron is available in many grades, providing a wide range of mechanical and physical properties.

Q: How are ductile iron pipes protected against stray current corrosion?: Various preventive measures and protective coatings are employed to safeguard ductile iron pipes from stray current corrosion. Stray current corrosion arises when an electric current flows through the pipe, causing accelerated corrosion and potential harm. To prevent this, the following measures are generally utilized: 1. Electrical isolation: Ductile iron pipes are insulated from other metallic structures by means of insulating materials like rubber gaskets or non-conductive coatings. This insulation obstructs the passage of stray current through the pipe, thereby minimizing the risk of corrosion. 2. Cathodic protection: Cathodic protection is a widely employed technique to shield ductile iron pipes from stray current corrosion. It involves installing sacrificial anodes or impressed current systems near the pipe. These anodes or systems emit a controlled electric current that counters the stray current and guarantees the cathodic protection of the iron pipe. 3. Coatings: Ductile iron pipes are typically coated with protective layers to enhance their resistance against corrosion. A common coating is fusion-bonded epoxy (FBE), which offers a high level of protection against stray current corrosion. FBE coatings act as a barrier, preventing electrical contact between the pipe and the surrounding environment. 4. Monitoring and maintenance: Regular monitoring and maintenance are essential for ensuring the ongoing protection of ductile iron pipes against stray current corrosion. This entails inspecting the protective coatings for any damage or deterioration and promptly repairing or replacing them as required. Additionally, monitoring systems can be installed to detect and measure stray currents, allowing for timely intervention if necessary. By implementing these protection measures, ductile iron pipes can effectively ward off stray current corrosion, thereby prolonging their lifespan and ensuring the integrity of the pipeline infrastructure.

Q: How are ductile iron pipes protected from external damage?: Ductile iron pipes are protected from external damage through the application of protective coatings. These coatings act as a barrier, shielding the pipes from corrosion and other forms of external damage. Additionally, the pipes may be encased in concrete or installed in a casing pipe to provide further protection against external forces and impacts.

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