Ductile Iron Pipe ISO2531 / EN545 / EN598 K9 DN200

Ductile Iron Pipe ISO2531 / EN545 / EN598 K9 DN200

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 20 m.t.

Supply Capability:: 200000 m.t./month

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1.Ductile Iron Pipe Description :

DI pipe fittings are manufactured according to ISO 2531 or BS EN545 or BS4772 FOR POTABLE WATER ,internal is cement lining or wet epoxy coating;External is zinc plus bitumen or wet epoxy coating. We also manufacture ductile iron fittings with fusion bonded epoxy both inside and outside. All the producets are sutible to water pipes fields.We have passed ISO9001,ISO14001,OHSMS18001 certificate.

2.Main Features of the Ductile Iron Pipe:
1).Quality guarantee
• Chemical checking
• NDE after rough machining
• Mechanical testing after heat treatment
• Final NDE,dimension inspected
2).Quality document
• Full Q.A document as per client request
3).Packing and Shipping
• standard export package(carton/wooden case/pallet)
• accept FOB,FAS,CNF,CIF door to door etc or customer designated shipping agent
3.Ductile Iron Pipe Images:

Ductile Iron Pipe ISO2531 / EN545 / EN598 K9 DN200

4.Ductile Iron Pipe Specification:
Surface Finishes: Bare, Oiled, Mill Varnish, Galv,FBE, FBE Dual, 3LPE, 3LPP, Coal Tar,Concrete Coating and Tape Wrap
End Finishes: Beveled, Square Cut, Threaded, hat
Additional Services: Internal Coating
Packaging: packed in bag, plastic bag, steel strip, steel wire,double wire, iron box, wooden box, tarpaulin, plastic sheeting
Inspection: MOODY SGS BV GL DNV ABS LIOYD’S
Test: X-ray, UT, magnetic particle,inspection,hydrostatic test.
5.FAQ:
1.Q: Why would you choose ductile iron pipe rather than other pipe materials?
A:The reasons are obvious for that not only ductile iron pipe possesses the inherent strength and flexibility of ductile iron, combined with proven corrosion protection systems, but also the cost savings can be achieved from design to installation and commissioning.
2.Q:Why can you guarantee the inner of pipes can’t be corroded?
A: High alumina cement mortar lining and sulphate-resistant cement mortar lining. These two special linings are applicable to inner anti-corrosion for sewage pipes, improving resistance to erosion of the sewage components.

Q:What is the expected joint flexibility of ductile iron pipes?: Due to the inherent material properties of ductile iron pipes, their expected joint flexibility is typically high. Ductile iron is renowned for its exceptional ductility, which enables it to deform without fracturing. This quality empowers ductile iron pipes to withstand external loads, ground movement, and pressure fluctuations without significant damage. To accommodate movement, the joints in ductile iron pipes are usually designed to provide additional flexibility. The most commonly used joint type in ductile iron pipes is the push-on joint. This joint type permits angular deflection and axial movement. It consists of a rubber gasket that creates a watertight seal and allows for slight movement between pipe sections. The expected joint flexibility varies depending on several factors, such as pipe diameter, joint type, and installation methods. Generally, ductile iron pipes can accommodate angular deflection within a certain range, typically ranging from 5 to 10 degrees, depending on the joint design. Axial movement can also be accommodated to some extent, allowing for the expansion and contraction of the pipe system. It is important to note that the specific manufacturer and product specifications may affect joint flexibility. Therefore, it is recommended to consult the manufacturer's guidelines and specifications to determine the expected joint flexibility of a particular ductile iron pipe product.

Q:What are the different joint types available for ductile iron pipe?: Ductile iron pipes offer a range of joint types, each with its own benefits and uses. The most commonly employed joint types in ductile iron pipe installations include: 1. Push-on Joint: This type involves inserting a rubber gasket into a groove on the pipe's spigot end. The pipe is then pushed into the bell end of the adjacent pipe, creating a watertight seal. Push-on joints are known for their quick and easy installation, making them perfect for applications that require efficiency. 2. Mechanical Joint: This joint relies on a gland and follower gasket, which are compressed between the spigot end of one pipe and the bell end of another. Bolts and nuts are used to secure the joint, ensuring a tight and secure connection. Mechanical joints provide excellent integrity and are used in applications with higher pressures or heavy loads. 3. Flanged Joint: Flanged joints utilize flanges on the pipe ends, which are bolted together with gaskets to achieve a leak-proof connection. These joints are commonly employed in situations where pipes need to be easily disconnected and reconnected, such as pump stations or valve connections. 4. Restrained Joint: These joints are specifically designed to prevent pipes from separating under high internal pressures or external forces. They typically incorporate mechanical joints with additional restraining devices like harnesses, rods, or thrust blocks. Restrained joints are commonly used in applications where pipe movement poses a risk or stability is crucial. It is important to consider factors like the application, operating conditions, and project requirements when selecting a joint type. Consulting a professional engineer or pipe manufacturer is advisable to ensure the most suitable joint type is chosen for a specific ductile iron pipe installation.

Q:Can ductile iron pipes be used for slurry transportation?: Yes, ductile iron pipes can be used for slurry transportation. Ductile iron pipes are known for their strength and durability, which makes them suitable for transporting various types of fluids, including slurry. They have the ability to withstand the abrasive nature of slurry and can effectively handle the pressure and flow requirements associated with slurry transportation.

Q:QT400-10 nodular cast iron requires hardness of HRC47~51. Why can't quench hardness be reached?: Quenching temperature: when the silicon content of nodular cast iron is 2.0-3.0%, the quenching temperature is 860-900 DEG C, the silicon content is low, and the upper limit is taken when the lower limit is high.2. holding time: because of the consideration of diffusion graphite cast iron, alloy steel is therefore the holding time, holding time longer than carbon steel.3. oil quenching.

Q:How is ductile iron pipe different from cast iron pipe?: Ductile iron pipe and cast iron pipe are commonly used in plumbing and drainage applications, but they have differences in composition, strength, and flexibility. To begin with, ductile iron pipe is made from a different iron alloy than cast iron pipe. Ductile iron contains more carbon and silicon, which gives it increased strength and durability. On the other hand, cast iron pipe is made from gray iron, which has higher carbon content but lacks the flexibility of ductile iron. Moreover, ductile iron pipe is renowned for its superior strength and resistance to impact. It can withstand higher pressures and is less likely to crack or break under heavy loads or external forces. Cast iron pipe, although strong, is more brittle and prone to fractures and failures. Another significant distinction is the flexibility of ductile iron pipe. It possesses greater flexibility and can endure bending and deformation without fracturing. This flexibility facilitates easier installation, particularly in areas with uneven terrain or where ground movement may occur. In contrast, cast iron pipe is less flexible and more rigid, making it unsuitable for applications that require flexibility. Additionally, ductile iron pipe has a smoother interior surface compared to cast iron pipe. This smoothness reduces friction, enhances flow efficiency, and minimizes the accumulation of sediment and deposits within the pipe, resulting in improved water flow and reduced maintenance needs. In conclusion, ductile iron pipe sets itself apart from cast iron pipe due to its composition, strength, flexibility, and smooth interior surface. Ductile iron offers superior strength, impact resistance, and flexibility, making it the preferred choice in various plumbing and drainage applications.

Q:How is ductile iron pipe protected against external corrosion?: Ductile iron pipe is protected against external corrosion through a variety of methods that ensure its durability and longevity. One common method is the application of protective coatings. The pipe is typically coated with a layer of zinc or asphaltic material, which acts as a barrier between the iron pipe and the surrounding environment. This coating helps to prevent direct contact between the pipe and corrosive elements such as soil, moisture, and chemicals, thereby reducing the risk of corrosion. Additionally, ductile iron pipes are often wrapped with a layer of polyethylene or polypropylene tape. This tape provides an extra layer of protection against external corrosion by serving as a physical barrier that shields the pipe from moisture and other potentially corrosive substances. The tape is applied with care to ensure complete coverage and adherence to the pipe's surface. Furthermore, cathodic protection is commonly employed to safeguard ductile iron pipes against external corrosion. This technique involves the installation of sacrificial anodes or impressed current systems near the pipe. These anodes generate a protective electrical current that counteracts the corrosion process, effectively inhibiting the deterioration of the pipe's surface. Lastly, proper installation practices play a crucial role in preventing external corrosion. It is essential to ensure that the pipe is buried at an appropriate depth, allowing for adequate soil coverage. This helps to minimize exposure to corrosive elements and maintain the integrity of the protective coatings. Additionally, proper backfilling techniques and the use of corrosion-resistant bedding materials can further enhance the pipe's resistance to external corrosion. In conclusion, ductile iron pipe is protected against external corrosion through a combination of protective coatings, tape wrapping, cathodic protection systems, and proper installation practices. These measures work together to provide a robust defense against the corrosive forces that the pipe may encounter, ensuring its longevity and reliability in various applications.

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:Are ductile iron pipes suitable for use in residential plumbing?: Yes, ductile iron pipes are suitable for use in residential plumbing. They are known for their durability, strength, and resistance to corrosion, making them a reliable choice for plumbing systems.

Q:What is the composition of ductile iron pipes?: Ductile iron pipes are primarily composed of iron, with small amounts of carbon, silicon, manganese, and trace elements such as sulfur and phosphorus.

Q:How do we handle the leaking of the ductile iron pipe?: In order to repair the defects of castings, the same or similar materials are usually adopted, and the materials with better performance or special requirements are used under special circumstances. Before welding, it is necessary to check the defects, determine the location, size and nature of the defects, and dig them out in accordance with the relevant measures, and then weld them again. Therefore, the preparation before welding must be in place.

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