DUCTILE IRON PIPE AND PIPE FITTINGS K9 CLASS DN125

DUCTILE IRON PIPE AND PIPE FITTINGS K9 CLASS DN125

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 20 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 expected hoop stress capacity of ductile iron pipes?: The expected hoop stress capacity of ductile iron pipes varies depending on the size and class of the pipe. However, ductile iron pipes typically have a high expected hoop stress capacity due to their robust and flexible nature, making them suitable for handling high-pressure applications.

Q:Are ductile iron pipes suitable for acidic or alkaline environments?: Ductile iron pipes are generally suitable for both acidic and alkaline environments, although their performance may vary depending on the specific conditions. Ductile iron is a type of cast iron that has been treated with a small amount of magnesium to enhance its strength and flexibility. This treatment allows ductile iron pipes to withstand a wide range of conditions, including those found in acidic or alkaline environments. In acidic environments, ductile iron pipes provide good resistance to corrosion. The iron in the pipes reacts with the acid to form a protective layer of iron oxide, which helps prevent further corrosion. However, it is important to note that the performance of ductile iron pipes in acidic environments can be influenced by factors such as the concentration of the acid and the temperature. In highly concentrated or extremely acidic conditions, alternative materials like stainless steel or corrosion-resistant alloys may be more suitable. Similarly, in alkaline environments, ductile iron pipes exhibit good resistance to corrosion. The alkaline conditions in these environments typically help to passivate the surface of the iron, forming a protective layer that prevents further corrosion. However, as in acidic environments, the specific conditions and concentrations of alkalis may impact the performance of ductile iron pipes. In cases of very high alkalinity or extreme temperatures, other materials like plastic or concrete pipes may be more appropriate. It is worth noting that although ductile iron pipes are generally suitable for both acidic and alkaline environments, regular maintenance and monitoring are crucial to ensure their long-term performance. Proper attention should be given to monitoring the pH levels and other chemical characteristics of the environment to identify any potential issues or required maintenance. Consulting with experts or engineers in the field can provide valuable insights and guidance in selecting the most appropriate materials for specific acidic or alkaline environments.

Q:What is the typical wall thickness of ductile iron pipes?: The wall thickness of ductile iron pipes can vary depending on their size and intended use, with a typical range of 0.25 inches (6.35 mm) to 0.5 inches (12.7 mm). However, when dealing with larger diameter pipes or those meant for high-pressure applications, the wall thickness may exceed these measurements. To determine the suitable wall thickness for a ductile iron pipe, it is crucial to refer to industry standards and project specifications.

Q:What are the typical pressure surge protection measures for ductile iron pipe?: To ensure the integrity and longevity of ductile iron pipe, various measures are commonly employed to protect against pressure surges. These measures encompass the following: 1. Surge tanks serve as effective tools for absorbing and mitigating the impact of pressure surges on ductile iron pipe. These tanks are typically positioned strategically at critical points in the pipeline system, such as near valves or pump stations, providing a reservoir to contain excess pressure. 2. Air release valves are indispensable components within ductile iron pipe systems, serving the purpose of releasing trapped air and preventing the formation of air pockets. These valves maintain a stable pressure within the pipe, reducing the risk of pressure surges during operation or abrupt changes in flow. 3. Pressure relief valves are designed to safeguard ductile iron pipes by releasing excessive pressure when it surpasses a predetermined threshold. These valves are usually installed at strategic locations in the pipeline system and programmed to open when the pressure exceeds a safe limit, diverting the excess pressure to safeguard the pipe from damage. 4. Surge suppressors are devices installed in ductile iron pipe systems to absorb and dissipate pressure surges. These devices function as shock absorbers, lessening the impact of pressure fluctuations and protecting the pipe from harm. Surge suppressors are particularly effective in situations where pressure surges occur frequently or are severe. 5. Ensuring an appropriate pipe wall thickness is another critical measure for pressure surge protection in ductile iron pipe. By selecting a pipe with the correct wall thickness, engineers can guarantee the pipe's ability to withstand the pressure surges it may encounter during operation. This measure helps prevent pipe failure or rupture caused by excessive pressure. It is essential to note that the specific pressure surge protection measures employed for ductile iron pipe may vary depending on factors such as the application, pipe size, operating conditions, and regulatory requirements. Consulting experts in pipeline engineering and design is imperative to determine the most suitable pressure surge protection measures for a particular ductile iron pipe system.

Q:How do ductile iron pipes handle thermal expansion and contraction?: Ductile iron pipes are known for their excellent ability to handle thermal expansion and contraction. This is mainly due to their unique composition and design which allows them to withstand changes in temperature without experiencing significant damage or deformation. Thermal expansion occurs when a material expands due to an increase in temperature, while thermal contraction refers to the contraction that occurs when a material cools down. Ductile iron pipes can effectively accommodate these changes in temperature by utilizing their inherent flexibility and strength. One of the key factors that enable ductile iron pipes to handle thermal expansion and contraction is their high ductility, which refers to their ability to deform without breaking. This ductility allows the pipes to absorb the expansion and contraction forces without cracking or rupturing. Moreover, the composition of ductile iron pipes includes graphite nodules, which act as microcracks that can absorb stress and prevent the material from fracturing. This unique microstructure enhances the pipes' resistance to thermal expansion and contraction. In addition, ductile iron pipes are often designed with joints that allow for limited movement. These joints, such as mechanical joints or push-on joints, can accommodate the expansion and contraction of the pipes by providing a certain degree of flexibility. This helps to prevent the pipes from becoming overstressed or damaged. Overall, ductile iron pipes are specifically engineered to handle thermal expansion and contraction effectively. Their high ductility, unique microstructure, and joint design make them a durable and reliable choice for applications where temperature variations are expected.

Q:Method for cutting large diameter ductile iron pipe: When the ratio of oxygen to acetylene is 1 to 1.2, the flame produced is called neutral flame, also known as normal flame. It consists of flame core, inner and outer flame: near the welding nozzle at the flame core, a bright white; followed by the flame, a blue purple, the highest temperature, about 3150 DEG C, from the front cone at 2 ~ 4mm, and the application of welding wire to the workpiece; the outer flame is orange red. Neutral flame is a flame commonly used in welding. It is used to weld low carbon steel, medium carbon steel, alloy steel, copper and aluminum alloy.

Q:Can ductile iron pipes be used in areas with high levels of industrial effluents?: Yes, ductile iron pipes can be used in areas with high levels of industrial effluents. Ductile iron is highly resistant to corrosion, making it suitable for handling various industrial waste streams and chemicals commonly found in effluents. Its durability and strength make it an ideal choice for such environments, ensuring long-term reliability and performance.

Q:How can stainless steel pipes and ductile iron pipes be joined?: The utility model can be connected with a wide range flange joint or a wide range flexible joint

Q:The difference between cast iron pipe and ductile iron pipe: Cast iron pipes, also known as pig iron pipes, ordinary gray iron. Often used in socket connection, the sealing material is usually cement rigid interface.

Q:What are the interface forms of ductile iron pipes? The best drawings are available. Thank you: There are many kinds of ductile iron pipe interfaces, and the T type interface (sliding type) flexible interface is famous for its fast installation and simple installation.

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