DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN700

DUCTILE IRON PIPE AND PIPE FITTINGS K7 CLASS DN700

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 32 pc

Supply Capability:: 3000 pc/month

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Ductile Iron Pipes of China on Chip Price DN400 EN545/EN598/ISO2531

Duct Iron Pipe DI Pipe ISO 2531 DN 80-2000mm PN 16

· 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 acidic soil conditions?: Ductile iron pipes have a reputation for being durable and resistant to different environmental conditions, including acidic soil conditions. When exposed to acidic soil, these pipes exhibit excellent resistance to corrosion due to their unique composition and protective coating. The high carbon content in ductile iron pipes gives them inherent resistance to corrosion, even in acidic environments. Additionally, these pipes are typically lined with cement mortar or a suitable epoxy coating, which provides an extra layer of protection against acid attack. The combination of the high carbon content and protective coating creates a barrier that prevents direct contact between the acid and the iron, thus minimizing the risk of corrosion. This ensures that the pipes remain structurally sound and maintain their integrity over a long period of time. Furthermore, ductile iron pipes have a long service life and are designed to withstand a wide range of soil conditions. Their strength and flexibility enable them to endure the stresses and strains caused by the surrounding soil, including acidic soil environments. This makes them an ideal choice for applications in soils with higher acidity levels. It is important to note that while ductile iron pipes perform well in acidic soil conditions, the severity and concentration of the acid can affect their performance. In extremely aggressive or highly concentrated acidic environments, additional corrosion protection measures may be necessary, such as sacrificial anodes or cathodic protection systems. In conclusion, ductile iron pipes are highly resilient and excel in acidic soil conditions. Their corrosion resistance, combined with their strong structure and protective coating, ensures their longevity and reliability, making them a preferred choice for various applications in such environments.

Q: Can ductile iron pipes be used for underground oil and gas pipelines?: Yes, ductile iron pipes can be used for underground oil and gas pipelines. Ductile iron is a strong and durable material that can withstand the high pressure and corrosive nature of oil and gas transportation. It has excellent tensile strength and impact resistance, making it suitable for underground applications. Ductile iron pipes are also resistant to external loads, which is important for underground pipelines that may be subject to soil movement or heavy traffic. Furthermore, ductile iron pipes can be easily jointed, allowing for efficient installation and maintenance. However, it is important to consider factors such as soil conditions, environmental factors, and specific project requirements before choosing ductile iron pipes for underground oil and gas pipelines.

Q: What are the different joint restraint systems available for ductile iron pipe?: Some of the different joint restraint systems available for ductile iron pipe include mechanical joint restraints, push-on joint restraints, and restrained joint systems.

Q: Are ductile iron pipes suitable for installation in areas with high traffic loads?: Ductile iron pipes are indeed suitable for installation in areas characterized by heavy traffic loads. The reason behind this lies in the remarkable strength and durability of ductile iron, rendering it an optimal selection for situations involving substantial loads and consistent traffic. This material possesses outstanding resistance to impact and can endure heavy loads without succumbing to cracks or fractures. Furthermore, ductile iron pipes boast a notable capacity for bearing heavy loads, enabling them to effectively withstand the weight and pressure imposed by vehicles and other weighty machinery. Consequently, these pipes find widespread utilization in locations such as highways, roads, bridges, and other regions experiencing significant traffic volumes.

Q: Can ductile iron pipe be used for irrigation systems?: Indeed, irrigation systems can utilize ductile iron pipe. Ductile iron proves to be a robust and enduring substance capable of withstanding the demanding conditions of high pressure and continuous water flow necessary for these systems. Its resistance to corrosion renders it appropriate for subterranean applications where it may encounter moisture and soil. Furthermore, ductile iron pipes possess the advantage of being capable of supporting substantial loads, a crucial aspect for irrigation systems potentially relying on heavy machinery or vehicles. In conclusion, ductile iron pipe represents a dependable and enduring option for irrigation systems.

Q: What is the excavation width of ductile iron pipes with diameters greater than 1400?: When the condition does not allow enough slope, it is necessary to do wall protection and other means to ensure safetyRemind me, such a big pipe, dig deep in two ways. One is the depth diameter (range at the junction of 1.6 m in length and 500 for manholes and operation. The lower bolt assembly when) there is a depth diameter plus 500. and then in the trench laying branch the pier, installed after the fine stone tamped backfill.Can also be buried directly with the pipe diameter, and then put into the assembly. This method requires a large space on the ground, otherwise, the volume is too large after assembly, weight is too heavy, may cause damage to the pipeline and personnel injuries

Q: How are ductile iron pipes made?: Ductile iron pipes are made using a specific manufacturing process known as centrifugal casting. This process involves pouring molten iron into a rotating mold, which is usually made of steel. The centrifugal force created by the rotation of the mold helps in distributing the molten iron evenly, ensuring the final product is of high quality. To begin the manufacturing process, a mixture of scrap iron, steel, and recycled material is melted in a furnace at extremely high temperatures. Once the molten iron reaches the desired temperature and consistency, it is ready to be cast into pipes. The rotating mold is first preheated to prevent the molten iron from cooling too quickly. The preheating process also helps in ensuring a smooth surface finish of the pipes. Next, the molten iron is poured into the rotating mold through a central sprue. As the mold spins, the molten iron is forced against the inner walls of the mold due to centrifugal force. This causes the iron to solidify rapidly, resulting in a dense, strong, and corrosion-resistant pipe. The centrifugal force also helps to remove any impurities or slag from the inner surface of the pipe, further enhancing its quality. Once the casting process is complete, the mold is allowed to cool, and the pipe is removed. The pipes are then subjected to various tests to ensure they meet the required quality standards. These tests may include checking the dimensions, mechanical properties, and surface finish of the pipes. After passing the quality tests, the ductile iron pipes are typically coated with a protective lining to prevent corrosion and extend their lifespan. This lining can be made of cement mortar, epoxy, or polyethylene, depending on the intended application of the pipes. In summary, ductile iron pipes are made through the centrifugal casting process, which involves pouring molten iron into a rotating mold. This process ensures the production of strong, corrosion-resistant pipes with a smooth surface finish.

Q: How does ductile iron pipe compare to steel pipe in terms of durability?: Ductile iron pipe and steel pipe both have their own unique characteristics, but in terms of durability, ductile iron pipe has several advantages over steel pipe. Firstly, ductile iron pipe is highly resistant to corrosion. It has a protective layer of zinc or cement lining that prevents rust and corrosion, making it more durable and less prone to leaks or failures. On the other hand, steel pipe is susceptible to corrosion, especially when exposed to moisture or certain chemicals. This can lead to structural issues and decrease its overall durability. Secondly, ductile iron pipe has excellent impact resistance. It can withstand heavy loads and external pressures without cracking or breaking. This makes it suitable for applications in areas with high traffic or where the pipe may be subject to accidental impacts. Steel pipe, although strong, can be more brittle and prone to fractures under similar conditions. Additionally, ductile iron pipe has a longer service life compared to steel pipe. It has been known to last for over 100 years with proper maintenance, making it a reliable and durable choice for infrastructure projects. Steel pipe, while still durable, may require more frequent inspections and maintenance to ensure its longevity. Overall, ductile iron pipe surpasses steel pipe in terms of durability due to its corrosion resistance, impact resistance, and longer service life. However, the choice between the two ultimately depends on the specific application, budget, and other project requirements.

Q: How are ductile iron pipes protected against erosion caused by high-velocity flow?: Ductile iron pipes are protected against erosion caused by high-velocity flow through various methods. One common approach is to apply an internal lining to the pipe, which can be made of materials such as cement mortar or polyethylene. This lining provides a smooth surface that reduces the friction and turbulence of the flowing water, thus minimizing the erosion potential. Additionally, external coatings, such as bitumen or epoxy, can be applied to protect the outer surface of the pipe from erosion caused by external factors like soil movement or abrasive materials. Regular inspection and maintenance of the pipes also play a crucial role in identifying and addressing any erosion-related issues to ensure their long-term durability.

Q: Classification of cast iron pipes: Continuous cast iron straight pipe:Continuous cast iron pipe, namely continuous casting gray cast iron pipe, suitable for water and gas pressure fluid delivery.

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