DUCTILE IRON PIPES AND PIPE FITTINGS K9 CLASS DN300

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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 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: What are the different methods for tapping ductile iron pipe?: There are several different methods for tapping ductile iron pipe, depending on the specific requirements of the project. Some of the common methods used include: 1. Mechanical Tapping: This method involves using a mechanical tapping machine to create a hole in the ductile iron pipe. The machine is equipped with a cutting tool that rotates and cuts through the pipe wall, creating a clean hole. This method is commonly used for smaller diameter pipes and is relatively quick and efficient. 2. Hot Tapping: Hot tapping involves creating a hole in a pressurized ductile iron pipe while it is still in service. This method requires specialized equipment and expertise to ensure safety and maintain the integrity of the pipe. Hot tapping is commonly used when it is not feasible or practical to shut down the pipeline for maintenance or repair work. 3. Electrofusion Tapping: Electrofusion tapping is a method that uses an electrofusion saddle and fitting to create a branch connection on a ductile iron pipe. This method involves welding a fitting onto the pipe using an electrofusion machine, which creates a secure and leak-proof connection. Electrofusion tapping is commonly used for larger diameter pipes and is suitable for both water and gas applications. 4. Saddle Tapping: Saddle tapping involves attaching a saddle or clamp onto the ductile iron pipe and drilling a hole through the saddle into the pipe. The saddle is then equipped with a threaded outlet for connecting a branch line. This method is commonly used for smaller diameter pipes and is relatively simple and cost-effective. 5. Split Sleeve Tapping: Split sleeve tapping is a method that involves cutting a section out of the ductile iron pipe and installing a split sleeve over the cut. The split sleeve is then bolted together, creating a secure and watertight connection. This method is commonly used for larger diameter pipes and is suitable for both water and gas applications. It is important to note that the selection of the tapping method should be based on factors such as the pipe size, pressure rating, required branch connection, and the specific requirements of the project. Consulting with a professional engineer or tapping specialist is recommended to ensure the proper method is used for tapping ductile iron pipe.

Q: How is ductile iron pipe tested for quality?: Ductile iron pipe is tested for quality through various methods, including visual inspection, hydrostatic pressure testing, and mechanical property testing. Visual inspection ensures that the pipe is free from any visible defects or imperfections. Hydrostatic pressure testing involves subjecting the pipe to water pressure that exceeds its maximum working pressure to check for any leaks or failures. Mechanical property testing assesses the pipe's strength, toughness, and other mechanical properties through tests such as tensile strength, yield strength, and elongation. These quality tests help ensure that ductile iron pipes meet the required standards and are suitable for their intended applications.

Q: What are the recommended bedding and backfill materials for ductile iron pipe?: The recommended bedding and backfill materials for ductile iron pipe include a combination of granular materials such as sand, gravel, or crushed stone. These materials provide support and stability to the pipe, ensuring proper alignment and preventing damage during installation and operation. For bedding, a layer of sand is typically used to create a uniform and level surface for the pipe to rest on. This helps distribute the load evenly along the pipe's length and reduces the potential for stress concentration. Backfill material is used to fill the remaining space around the pipe once it is properly bedded. It is crucial to select a material that offers good compaction and drainage properties to prevent settling and potential damage to the pipe. Commonly used backfill materials include crushed stone or gravel, which provide stability and allow for proper compaction. It is important to follow the recommendations of the pipe manufacturer and any relevant industry standards when selecting bedding and backfill materials for ductile iron pipe. These materials should meet the specified size and quality requirements to ensure the long-term performance and durability of the pipe system. Additionally, local regulations and soil conditions should also be taken into consideration when determining the appropriate bedding and backfill materials for ductile iron pipe installations.

Q: How does ductile iron pipe perform in areas with high soil movement?: Ductile iron pipe possesses notable attributes of strength, durability, and flexibility, rendering it an optimal selection for locales with substantial soil movement. Differing from alternative piping materials, like PVC or concrete, ductile iron pipe demonstrates the capability to endure significant ground shifts without undergoing catastrophic failure. The inherent robustness of ductile iron pipe empowers it to withstand the external forces imposed by soil movement, encompassing settlement, lateral displacement, and ground heave. Its elevated tensile strength and capacity to endure bending stresses render it less prone to developing cracks, fractures, or leaks, thereby ensuring the pipeline system's integrity. Moreover, ductile iron pipe exhibits remarkable deflection capabilities, imparting the capacity to flex and accommodate ground movement without succumbing to breakage. This flexural aptitude enables the pipe to disseminate the stress engendered by soil movement along its length, thereby diminishing the concentration of forces at any specific juncture. In regions characterized by pronounced soil movement, ductile iron pipe also reaps the advantages of its corrosion resistance properties. Typically coated with a protective layer, such as cement-mortar lining or polyethylene encasement, the pipe serves as a barrier against corrosive elements found in the soil. This protective coating effectively mitigates damage and deterioration, ensuring the pipe's endurance and performance, even in demanding soil conditions. All in all, ductile iron pipe is highly recommended for locales with substantial soil movement due to its exceptional strength, flexibility, and corrosion resistance. Its ability to withstand ground shifts and distribute stress establishes it as a dependable choice for long-term performance, necessitating minimal maintenance.

Q: What are the different coatings available for ductile iron pipe?: Ductile iron pipes offer a range of coating options, each with their own advantages and protective qualities for different uses. Some commonly utilized coatings are as follows: 1. Cement Mortar Lining: By applying a layer of cement mortar to the pipe's interior surface, this coating provides excellent resistance against corrosion and abrasion. It is ideal for transporting water and sewage. 2. Bituminous Coating: Consisting of asphalt or coal tar pitch applied to the pipe surface, bituminous coatings offer effective protection against corrosion. They are commonly used for underground pipes in water and wastewater systems. 3. Fusion-Bonded Epoxy (FBE) Coating: FBE coatings are created by electrostatically applying an epoxy powder layer to the pipe surface, which is then cured at high temperatures. This coating offers exceptional corrosion resistance and is suitable for harsh environments and corrosive substances. 4. Polyurethane Coating: Polyurethane coatings provide excellent resistance against abrasion, impact, and corrosion. They are often used for pipes exposed to abrasive materials or requiring additional protection against external damage. 5. Zinc Coating: Also known as galvanized coatings, zinc coatings involve applying a layer of zinc to the pipe's surface. This coating offers excellent corrosion protection, making it suitable for pipes exposed to moisture and aggressive environments. 6. Polyethylene Encasement: Polyethylene encasement involves wrapping the pipe with a layer of polyethylene film or tape. This coating acts as a physical barrier against corrosion and is commonly used in conjunction with other coatings for added protection. To determine the most appropriate coating for ductile iron pipes, it is crucial to consider the specific requirements of the application, such as the type of fluid being transported and the environmental conditions.

Q: Can ductile iron pipes be used in gravity sewer systems?: Ductile iron pipes find great utility in gravity sewer systems. Renowned for their robustness and durability, they are extensively employed in diverse applications, including sewer systems. Boasting exceptional corrosion resistance, they can withstand immense pressure and heavy burdens. Moreover, their flawlessly smooth interior surface curtails friction and enhances the transportation of waste and wastewater. Consequently, they emerge as an ideal option for gravity sewer systems, where the seamless flow of sewage hinges upon gravity to traverse the pipes.

Q: Ductile iron gears are generally treated without heat treatment: Heat treatment must be necessary, generally annealed first to machine, after quenching or nitriding treatment

Q: Are ductile iron pipes resistant to abrasion or wear?: Yes, ductile iron pipes are highly resistant to abrasion or wear due to their inherent strength and durability.

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.

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