DUCTILE IRON PIPES AND PIPE FITTINGS K9 CLASS DN200

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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:How do ductile iron pipes perform in freeze-thaw cycles?: Ductile iron pipes perform exceptionally well in freeze-thaw cycles. The material properties of ductile iron, such as its high tensile strength and excellent impact resistance, make it highly resistant to the stresses caused by freeze-thaw cycles. Unlike other materials, ductile iron pipes can withstand the expansion and contraction that occurs during freezing and thawing without cracking or breaking. One of the key reasons why ductile iron pipes excel in freeze-thaw conditions is their ability to absorb and dissipate stresses. The high ductility of the material allows it to deform slightly under stress, thereby releasing the built-up pressure and preventing any damage to the pipe. This characteristic ensures that the pipes can handle the repeated cycles of freezing and thawing without compromising their structural integrity. Additionally, ductile iron pipes have a protective and durable coating, such as cement mortar lining or polyethylene encasement, which further enhances their resistance to freeze-thaw cycles. These coatings provide an additional layer of protection and prevent water from coming into direct contact with the iron, reducing the potential for corrosion. Furthermore, ductile iron pipes have a long service life, typically exceeding 100 years. This longevity is attributed to the material's inherent strength and resistance to various environmental factors, including freeze-thaw cycles. The pipes' ability to withstand these cycles without significant damage ensures the reliability and durability of the water distribution system, even in areas prone to freezing temperatures. In conclusion, ductile iron pipes are highly reliable and perform exceptionally well in freeze-thaw cycles. Their high tensile strength, impact resistance, ability to absorb stresses, and protective coatings make them a preferred choice for water distribution systems in regions with harsh winter conditions.

Q:Can ductile iron pipes be used for irrigation systems in saline soil conditions?: Ductile iron pipes, due to their durability and corrosion resistance, can be utilized for irrigation systems in saline soil conditions. These pipes are renowned for their ability to withstand various soil conditions, including saline soil, which is characterized by elevated salt levels that can lead to corrosion and material deterioration. However, ductile iron pipes possess a protective coating, such as cement mortar lining or polyethylene encasement, that provides an added layer of defense against corrosion. Consequently, they can endure the corrosive impacts of saline soil and maintain their structural integrity for an extended duration. Moreover, ductile iron pipes exhibit a high tensile strength, enabling them to resist cracks and breaks, which is crucial for irrigation systems necessitating a consistent and dependable water supply. Consequently, ductile iron pipes represent a viable option for irrigation systems operating in saline soil conditions.

Q:Can ductile iron pipes be used for rainwater harvesting systems?: Yes, ductile iron pipes can be used for rainwater harvesting systems. Ductile iron pipes are known for their durability and strength, making them suitable for various applications, including rainwater collection and storage. They can effectively transport rainwater from collection points to storage tanks, ensuring a reliable and efficient rainwater harvesting system.

Q:Are ductile iron pipes suitable for railway crossings?: Yes, ductile iron pipes are suitable for railway crossings. Ductile iron has excellent strength and durability, making it capable of withstanding heavy loads and vibrations caused by passing trains. Additionally, its corrosion resistance properties make it a reliable choice for long-term use in this specific application.

Q:The difference between ductile cast iron pipe and machine-made cast iron pipe: Production process is different, ductile iron pipe mainly through intermediate frequency furnace heating, annealing, and then do cement lining cement lining production, the mechanism of cast iron pipe does not make cement lining.

Q:Can ductile iron pipes be used for gravity sewer systems?: Yes, ductile iron pipes can be used for gravity sewer systems. Ductile iron pipes are known for their durability, strength, and resistance to corrosion, making them suitable for various applications including sewer systems. These pipes have excellent tensile strength and can withstand high pressure and heavy loads, making them ideal for gravity sewer systems where wastewater flows by gravity rather than being pumped. Additionally, ductile iron pipes have a long lifespan and require minimal maintenance, making them a cost-effective choice for sewer infrastructure.

Q:What is the typical lifespan of ductile iron pipes?: The typical lifespan of ductile iron pipes can vary depending on various factors such as the quality of the pipes, the environmental conditions, and the maintenance practices. However, on average, ductile iron pipes have a lifespan of around 75 to 100 years. This makes them a durable and long-lasting option for water and sewage transportation systems. With proper installation and regular maintenance, these pipes can withstand corrosion, pressure, and other external factors, ensuring their longevity and reliability. Additionally, advancements in coatings and linings have further enhanced the lifespan of ductile iron pipes, making them an excellent choice for infrastructural projects.

Q:What are the different joint restraint systems available for ductile iron pipe?: There are several different joint restraint systems available for ductile iron pipe. These systems are designed to prevent movement and separation of the pipe at the joints, ensuring a secure and leak-free connection. Some of the common joint restraint systems for ductile iron pipe include: 1. Mechanical Joint Restraint: This system consists of a mechanical joint adapter and a restraining gland that provides axial restraint. The joint adapter is bolted to the pipe, while the restraining gland is bolted to the adjacent pipe or structure, preventing any movement. 2. Push-on Joint Restraint: In this system, a push-on joint is used along with a restraining gland that is bolted to the pipe or structure. The gland provides axial restraint by gripping the pipe and preventing it from moving. 3. Flex-Ring Joint Restraint: This system utilizes a flexible rubber ring that is installed inside the pipe's bell. The ring provides radial restraint by expanding against the pipe, ensuring a tight and secure connection. 4. Harness Joint Restraint: This system consists of a harness that is wrapped around the pipe and connected to a restraining gland. The harness provides both axial and radial restraint, keeping the pipe in place and preventing any movement. 5. Grip-Lock Joint Restraint: This system utilizes a wedge-shaped restraint that is inserted into the pipe's bell. The wedge expands and locks into place, providing both axial and radial restraint. 6. Restrained Joint System: This system incorporates a combination of mechanical and flexible joint restraints. It typically includes a mechanical joint adapter, a flexible joint restraint, and a restraining gland, providing both axial and radial restraint. These joint restraint systems are designed to meet specific application requirements and are often specified by engineers based on factors such as pipe diameter, operating pressure, and soil conditions. Each system has its own advantages and limitations, and the selection depends on the specific project needs and constraints.

Q:How are ductile iron pipes different from other types of pipes?: DI pipes, also called ductile iron pipes, possess unique properties and are manufactured differently from other pipe types. They are specifically designed to withstand high-pressure systems and offer exceptional strength and durability, setting them apart from PVC, steel, or concrete pipes. One significant distinction lies in the material used. DI pipes are made from a type of cast iron containing additional elements like carbon and silicon, which give them remarkable strength and flexibility. This composition enables DI pipes to handle high-pressure systems, making them suitable for applications requiring reliable water supply, such as water mains, sewer systems, and industrial pipelines. Another distinguishing feature of DI pipes is their ability to endure external loads and pressure. They possess high tensile strength, enabling them to bear heavy loads without cracking or breaking. This property makes them ideal for underground installations, where they can withstand the weight of soil, traffic, and other external factors. Furthermore, DI pipes exhibit excellent corrosion resistance. They are coated with a protective layer, typically through cement lining, which safeguards against rust and corrosion caused by the elements, chemical reactions, or transported fluids. This corrosion resistance significantly extends the pipes' lifespan, reducing maintenance and replacement costs over time. Additionally, DI pipes offer great flexibility. They are renowned for their ductility, meaning they can deform under stress without fracturing, making them less prone to cracks and leaks. This inherent flexibility allows them to withstand ground movement and seismic activities, ensuring a safe and reliable water distribution system. Regarding installation, DI pipes are relatively easy to handle due to their lighter weight compared to materials like concrete or steel. They are also available in various lengths and diameters, making them adaptable to different project requirements. In conclusion, DI pipes distinguish themselves through their exceptional strength, resilience, corrosion resistance, and ease of installation. These properties make them the preferred choice for numerous infrastructure projects, where reliability and longevity are critical factors.

Q:What are the typical surge anticipation measures for ductile iron pipe?: To mitigate potential damage caused by surges or water hammer in ductile iron pipe systems, various techniques can be employed. These measures aim to absorb or redirect sudden pressure changes, preventing pipe rupture or failure. Common surge anticipation measures for ductile iron pipe include: 1. Incorporating air chambers strategically along the pipeline to create a cushion of air that absorbs surge energy. As the pressure wave travels through the pipe, the air compresses, reducing the impact on the pipe and minimizing the risk of damage. 2. Connecting surge tanks, which act as storage reservoirs for excess pressure, to the pipeline. When a surge occurs, the surge tank absorbs the excess water volume, preventing damage to the pipe. The stored water is gradually released back into the system, stabilizing the pressure. 3. Installing surge relief valves in the pipeline to automatically release excess pressure during surge events. These valves open when the pressure exceeds a preset limit, allowing the surge to dissipate harmlessly. Surge relief valves can be adjusted to release the desired amount of pressure, ensuring the safety of the ductile iron pipe. 4. Utilizing water hammer arrestors, which are devices that absorb the shock generated by surges and water hammer. These devices consist of sealed chambers filled with a compressible gas or liquid that absorbs sudden pressure changes. By absorbing the energy, water hammer arrestors protect the ductile iron pipe from potential damage. 5. Using surge suppressors, devices that regulate the flow of water during surge events. Surge suppressors are designed to reduce the speed at which surges travel through the pipe, minimizing the impact on the system. These devices can be installed at critical points in the pipeline to prevent damage to the ductile iron pipe. To determine the most suitable surge anticipation measures for ductile iron pipe installations, it is important to consider the specific requirements of the pipeline system and consult experienced engineers or industry professionals.

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