DUCTILE IRON PIPES AND PIPE FITTINGS K8 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's the function of the cement mortar lining of ductile iron pipes?: Active protection is superior to barrier coating, cement mortar lining, and a stable hydroxide film formed on the surface of ductile iron and steel pipe to form a protective layer. This kind of protective coating has excellent antiseptic properties because they spontaneously protect themselves even in discontinuous linings. A polymer in sharp contrast, such as an epoxy lining, is also barrier coating, but only if 100% is applied without leakage. Any interruption or leakage will cause corrosion.It has been documented that cement mortar and cement mortar have been applied to the field of water transportation and can meet the water quality standards for a long time. Some standards still apply to the world. Cement mortar does not support microbial growth. In the case of corrosive water or low flow rate (prolonged stagnation), it is better to use cement mortar lined pipes because it can maintain high pH values in the pipe. This does not cause health problems and can be prevented by very simple sealed coating methods. The natural characteristics of the sealing coating provide the best protection for the inner wall of the pipe, while ensuring that all the water quality indexes meet the quality requirements, low cost and high efficiency.

Q:Are ductile iron pipes resistant to alkaline attacks?: Generally, ductile iron pipes have resistance against alkaline attacks. Ductile iron is renowned for its durability and ability to resist corrosion, making it suitable for a range of applications, including water and wastewater systems. Certain metals can experience corrosion from alkaline substances, such as high pH levels in water or chemicals. However, ductile iron has been specially engineered to withstand these conditions. Its composition, which includes the addition of alloying elements like nickel and chromium, enhances its resistance to alkaline attacks. Moreover, ductile iron pipes are frequently coated with protective substances like cement mortar or polyethylene, which further increase their resistance against alkaline substances. Nevertheless, it is important to consider that the specific resistance of ductile iron pipes to alkaline attacks can be influenced by various factors, such as the concentration and duration of exposure to alkaline substances, as well as the presence of other corrosive agents. Therefore, it is always advisable to consult with manufacturers or industry experts to ensure the appropriateness of ductile iron pipes for specific alkaline environments.

Q:Can ductile iron pipe be used for wastewater treatment plants?: Yes, ductile iron pipe can be used for wastewater treatment plants. Ductile iron pipe is a strong and durable material that is resistant to corrosion and abrasion. It is commonly used in wastewater treatment plants due to its ability to handle the harsh and corrosive environment often found in these facilities. Ductile iron pipe is also known for its excellent hydraulic performance, making it suitable for transporting wastewater efficiently and effectively. Additionally, the ease of installation and maintenance of ductile iron pipe make it a practical choice for wastewater treatment plants. Overall, ductile iron pipe is a reliable and cost-effective option for wastewater treatment applications.

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:What is the typical lifespan of ductile iron pipes?: The typical lifespan of ductile iron pipes can range from 75 to 100 years, depending on various factors such as the quality of the installation, maintenance practices, and the conditions in which the pipes are exposed to.

Q:How to analyze and judge the quality of ductile iron pipe: On the quality of single pipe can analyze it from the surface is sand type and water cooled pipes, K8 pipe is different from Shanxi root nature is that the proportion of grade K9 cement and cast iron pipe and the K8 pipe are different, there is no national standard and non standard, no K8 tube, only is the production plant in order to obtain more profits, the dealer is not up to the national standard K9 grade pipe called K8 grade ductile pipe, K9 pipe cement weighs about 1/5 weight of the pipe, but is played in the role of anti-corrosion, the so-called K8 class water mud proportion some manufacturers terrifying 3/4 or 3/5, as the water supply pipe 3/5 or no personally think that two of the proportion of the tube is no problem

Q:What is the internal lining used in ductile iron pipes?: The internal lining used in ductile iron pipes is typically a cement mortar lining. This lining is applied to the inside surface of the pipe to protect it from corrosion and abrasion. The cement mortar lining helps to extend the lifespan of the pipes and ensures they can withstand the harsh conditions of transporting water or sewage. Additionally, the lining also improves the hydraulic efficiency of the pipes by reducing friction and preventing the formation of biofilms or deposits on the inner surface. Overall, the use of cement mortar lining in ductile iron pipes is essential for maintaining the integrity and functionality of the infrastructure.

Q:How are ductile iron pipes protected against freeze-thaw cycles?: Ductile iron pipes are protected against freeze-thaw cycles by using a combination of insulation, proper installation techniques, and the addition of corrosion inhibitors or anti-freeze agents in the water supply. This helps prevent the expansion and contraction of the pipes caused by freezing and thawing, reducing the risk of damage or cracking.

Q:Are ductile iron pipes suitable for potable water systems?: Yes, ductile iron pipes are suitable for potable water systems. Ductile iron is a strong and durable material that is resistant to corrosion, making it a reliable choice for transporting drinking water. Additionally, ductile iron pipes have been widely used in potable water systems for many years, proving their suitability and effectiveness.

Q:Some questions about the bearing capacity of nodular cast iron pipes!: But the key is that the cast iron pipe needs centrifugal casting, especially the longer tube. Therefore, we must understand whether the production plant has this production condition, otherwise, the higher quotation may not be able to produce.

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