DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN250

DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN250

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 23 pc

Supply Capability:: 3000 pc/month

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Ductile Iron Pipe On Sale Made In China DN100

· 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 external protection system for ductile iron pipes?: Typically, a combination of coatings and cathodic protection is used to provide external protection for ductile iron pipes. These coatings, such as fusion-bonded epoxy (FBE) or polyethylene, are applied to the pipe's outer surface to create a barrier against corrosion and shield it from the surrounding environment. They have high resistance against moisture, chemicals, and abrasion, ensuring the longevity of the pipe. Furthermore, cathodic protection is often employed along with coatings to enhance the external protection of ductile iron pipes. This involves using sacrificial anodes or impressed current systems to generate a protective electrical current that counteracts the corrosive effects on the pipe's surface. By maintaining the ductile iron in a cathodic state, where it is less prone to degradation, this technique helps prevent corrosion. The combination of coatings and cathodic protection offers a robust and comprehensive external protection system for ductile iron pipes. These measures effectively safeguard the pipes from corrosion, resulting in extended service life and reduced need for expensive repairs or replacements. Regular inspection and maintenance are also crucial to ensure the ongoing effectiveness of the external protection system and to promptly address any potential issues.

Q:Can ductile iron pipes be used for large-scale irrigation systems?: Yes, ductile iron pipes can be used for large-scale irrigation systems. Ductile iron pipes are known for their strength, durability, and corrosion resistance, making them suitable for various applications, including irrigation. They can handle high-pressure water flow and provide long-lasting performance, making them a reliable choice for large-scale irrigation systems.

Q:What is the expected thermal expansion coefficient of ductile iron pipes?: The expected thermal expansion coefficient of ductile iron pipes typically ranges from 10.8 to 12.2 x 10^-6 per degree Celsius.

Q:What are the different methods for cutting ductile iron pipe?: There are several different methods for cutting ductile iron pipe, depending on the specific requirements and constraints of the project. Some common methods include: 1. Manual Cutting: This method involves using a handheld saw or grinder with an abrasive cutting wheel to cut through the ductile iron pipe. It is a simple and relatively inexpensive method, but it can be labor-intensive and time-consuming for larger pipe sizes. 2. Mechanical Cutting: Mechanical cutting methods involve using specialized machinery to cut through the ductile iron pipe. This can include bandsaws, pipe cutters, or hydraulic cutting machines. These machines can provide faster and more precise cuts, especially for larger pipe sizes. However, they can be more expensive and require skilled operators. 3. Torch Cutting: Torch cutting, also known as oxyfuel cutting, involves using a torch to heat the ductile iron pipe and then introducing a high-pressure oxygen stream to create a chemical reaction that cuts through the metal. This method is effective for cutting thick-walled ductile iron pipe, but it can generate a significant amount of heat and sparks, requiring proper safety precautions. 4. Plasma Arc Cutting: Plasma arc cutting utilizes a high-velocity jet of ionized gas (plasma) to melt and cut through the ductile iron pipe. This method is ideal for cutting through thick-walled pipes where precision and efficiency are required. However, it can be more expensive and may require specialized equipment and training. 5. Waterjet Cutting: Waterjet cutting uses a high-pressure jet of water mixed with an abrasive material to cut through the ductile iron pipe. This method is highly precise and does not generate heat or sparks, making it suitable for cutting in sensitive environments. However, it can be slower and more expensive compared to other cutting methods. It is important to consider factors such as pipe size, project requirements, budget, and safety when selecting the appropriate method for cutting ductile iron pipe. Consulting with professionals or experts in the field can help determine the most suitable method for a specific project.

Q:Can ductile iron pipes be used for dam construction?: Yes, ductile iron pipes can be used for dam construction. Ductile iron pipes are known for their strength, durability, and corrosion resistance, making them suitable for a wide range of applications, including dam construction. These pipes can withstand high pressure, making them ideal for transferring water or other fluids within the dam structure. Additionally, their ability to withstand external loads and ground movement makes them a reliable choice for the construction of dams. Ductile iron pipes are also relatively easy to install and maintain, further adding to their suitability for dam construction projects.

Q:Are ductile iron pipes suitable for installation in areas with high groundwater table?: Indeed, areas with a high groundwater table are suitable for the installation of ductile iron pipes. These pipes are renowned for their exceptional strength and durability, rendering them perfect for underground installations. They possess the ability to endure the external pressure exerted by groundwater without any deformation or collapse. In addition, their outstanding resistance to corrosion shields them from the potentially harmful impact of groundwater. Consequently, ductile iron pipes can be confidently utilized in areas with a high groundwater table, ensuring the establishment of dependable and enduring water supply infrastructure.

Q:What kind of valves are commonly used in ductile iron pipes?: Gate valve, butterfly valve, globe valve, check valve flange of various valves, (but the pipeline used for water supply and some limitations of the transport medium may be prescribed valve type) now due to material improvements in the technology, in most cases, smaller pipe diameter is also large diameter pipe outlet valve, butterfly valve, because of the pipeline the large diameter pressure in the pipeline and water than the small caliber to open and close the valve, to human hard, efficiency is not high, so for butterfly valve,

Q:Can ductile iron pipes be used in areas with high levels of organic matter in soil?: Yes, ductile iron pipes can be used in areas with high levels of organic matter in soil. Ductile iron pipes have excellent corrosion resistance, making them suitable for various soil conditions, including those with high levels of organic matter. They are resistant to chemical attacks and offer long-term durability, making them a reliable choice for such environments.

Q:How is ductile iron pipe recycled?: Ductile iron pipe is a highly durable and long-lasting material used in various infrastructure systems such as water and wastewater pipelines. When it reaches the end of its life cycle, ductile iron pipe can be recycled rather than disposed of in landfills. The process of recycling ductile iron pipe begins with its removal from the ground. Typically, a trench is dug to access the pipe, and it is cut into smaller, manageable sections using specialized equipment. These sections are then transported to a recycling facility. At the recycling facility, the ductile iron pipe is further processed to remove any contaminants. This involves removing any fittings or joints that may be attached to the pipe. Any non-iron materials, such as rubber gaskets or coatings, are also separated and discarded. Once the pipe has been cleaned and prepared, it is usually crushed or shredded into smaller pieces. This step increases the surface area of the material, making it easier to melt down in the next stage of the recycling process. The crushed or shredded ductile iron pipe is then melted in a furnace at high temperatures. This process, known as smelting, converts the solid iron into a liquid state. During smelting, impurities and any remaining non-iron materials rise to the surface and are skimmed off. After smelting, the molten iron is poured into molds to form new products. These molds can be used to produce a wide range of ductile iron products, including new pipes, fittings, valves, and manhole covers. The new products made from recycled ductile iron pipe have the same qualities and durability as those made from virgin materials. Recycling ductile iron pipe not only reduces the demand for new materials but also helps conserve energy and resources. The process requires less energy compared to producing iron from raw materials, which results in a lower carbon footprint. Additionally, recycling ductile iron pipe helps to reduce waste and promotes a circular economy by giving new life to an otherwise discarded material.

Q:Principles for the antiseptic treatment of ductile iron pipes: Anti corrosion process of ductile iron pipe:1. asphalt paint coatingBituminous paint coatings are pipes used to carry gas. Preheating the pipe before spraying can improve the adhesion of asphalt paint and accelerate drying.2. cement mortar lining + special coatingThe internal corrosion prevention measures are suitable for pipes conveying sewage, and the corrosion resistance of lining can be improved.3. epoxy coal tar coatingThe epoxy coal tar coating is not only suitable for gas pipelines, but also for sewage pipes. It is a two component coating with a high adhesion and a very smooth surface

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