T Type Ductile Iron Pipe DN500 Socket Spigot pipe

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t

Supply Capability:: 30000 m.t/month

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Specification:

1) The standard of pipe: ISO2531:1998, EN545:2006，K9 K8

2) Effective length: 6m/5.7m

3) Inner cement line: Portland cement lineas per ISO4179

4) Zinc coating: at least 130g/m² as per ISO8179

5) Bitumen painting: at least 70μm as per ISO8179

6)With 102% quantity of NBR, SBR, or EPDM ring asper ISO4633

7) DN80-DN1200

8) Highstrength, lighter than grey iron, good corrosion resistance, no furring, smallflow resistance, easy fixing, long life tome about 100 yeas

9)Checked by automatic inspection equipment

10) Composition:

Chemical composition
Chemical composition	Ductile Cast Iron Pipe (%)	Grey iron pipe (%)	Steel pipe (%)
C	3.5-4.0	3.2-3.8	0.1-0.2
Si	1.9-2.6	1.4-2.2	0.15-0.4
Mn	0.15-0.45	0.4-0.6	0.3-0.6
P	≤0.06	≤0.3	0.02-0.03
S	≤0.02	≤0.1	0.02-0.03
Mg	0.03-0.06

11) Feature:

Mechanical properties
	Ductile Cast Iron Pipe	Grey Iron Pipe	Steel Pipe
Tensile Strength(Mpa)	≥420	150-260	≥400
Yield Strength(Mpa)	≥300	No Confirmation	No Confirmation
Bending Strength(Mpa)	≥590	200-360	≥400
Elongation (%)	≥10	Neglected	≥18
Brinell Hardness(HBS)	≤230	≤230	About 140

12) T type mechanical joint

13) Packing: in bulk or container

PACKING: 1) Pipesare bundled together with the steel belt.

2) Wooden pieces are put between the pipes.

Q: What is the expected leakage rate for ductile iron pipes?: The expected leakage rate for ductile iron pipes can differ depending on various factors like the pipes' age, condition, and installation approaches, as well as the quality of materials employed. Nevertheless, ductile iron pipes generally have a reputation for being durable and having low leakage rates compared to other pipe materials. Based on industry standards and research studies, well-maintained ductile iron pipes are expected to have a leakage rate as low as 0.1% per year. This implies that, on average, less than 1 liter of water may leak per meter of pipe length annually. However, it is important to note that this is an average value and actual leakage rates can vary. Regular maintenance and inspections are crucial in minimizing leaks and ensuring the longevity of ductile iron pipes. Additionally, proper installation techniques, such as using effective jointing methods and appropriate bedding and backfill materials, can also contribute to reducing leakage rates. To determine the expected leakage rate for specific ductile iron pipe installations, it is recommended to consult industry professionals and adhere to applicable standards and regulations.

Q: Can ductile iron pipes be used in areas with high levels of hydrogen sulfide gas and corrosion potential?: Before making a decision, it is important to take certain factors into consideration when considering the use of ductile iron pipes in areas with high levels of hydrogen sulfide gas and corrosion potential. Ductile iron pipes display a strong resistance to corrosion, particularly when they are adequately protected with external coatings and linings. This characteristic makes them appropriate for environments with moderate levels of hydrogen sulfide gas and corrosion potential. Nevertheless, in areas with exceedingly high levels of hydrogen sulfide gas and severe corrosion potential, alternative materials such as corrosion-resistant alloys or specially coated pipes may be more suitable. To determine the suitability of ductile iron pipes, conducting a thorough evaluation of the specific conditions in the area is crucial. Factors such as the concentration of hydrogen sulfide gas, the presence of other corrosive elements or chemicals, and the overall corrosiveness of the environment should be taken into account. Furthermore, consulting the local regulations and industry standards is essential to ensure compliance and safety. In conclusion, while ductile iron pipes can withstand moderate levels of hydrogen sulfide gas and corrosion potential, it is necessary to conduct a comprehensive assessment of the specific conditions. In areas with high levels of hydrogen sulfide gas and severe corrosion potential, consulting with experts in the field and considering alternative materials may be required.

Q: Can ductile iron pipes be used for potable water systems?: Yes, ductile iron pipes can be used for potable water systems. Ductile iron is a strong and durable material that is resistant to corrosion and has been widely used in water distribution systems for many years. It meets the necessary standards and regulations for the transportation of potable water, making it a suitable choice for such applications.

Q: Are ductile iron pipes suitable for underground river crossings?: Indeed, underground river crossings can be facilitated by the use of ductile iron pipes. Ductile iron, being a robust and long-lasting material, can endure the external stresses and burdens encountered in such crossings. With its superb tensile strength, impact resistance, and durability, ductile iron is exceptionally well-suited for underground applications where the pipes may face elevated water pressure, ground displacement, or various environmental influences. Furthermore, ductile iron pipes possess an extended lifespan and are impervious to corrosion, a vital attribute when dealing with water crossings. Their capacity to withstand these circumstances renders them a dependable choice for underground river crossings.

Q: How do ductile iron pipes handle internal scale buildup?: Ductile iron pipes are highly resistant to internal scale buildup due to their smooth inner surface. The material's inherent strength and durability allow it to withstand the pressure exerted by scale deposits without significant damage or reduced performance. Additionally, the smooth surface of ductile iron pipes minimizes the adhesion of scale, preventing its accumulation and ensuring efficient flow of water or other fluids. Regular maintenance and periodic cleaning can further enhance the longevity and performance of ductile iron pipes in managing any potential scale buildup.

Q: What is the expected maintenance for ductile iron pipes?: To ensure the longevity and optimal performance of ductile iron pipes, regular inspections and preventative measures are required. The first step is to conduct routine visual inspections to detect any signs of corrosion, leaks, or damage. By examining the external surface for cracks, rust, or discoloration, potential issues can be identified at an early stage. In addition, periodic cleaning of the pipes is necessary to eliminate any debris or sediment build-up that could obstruct the water flow. This can be accomplished by flushing the pipes or utilizing mechanical cleaning techniques. It is also crucial to regularly check and maintain the protective coatings on the pipes, such as linings or external paints, to prevent corrosion and maintain their structural integrity. To extend the lifespan of ductile iron pipes, a comprehensive corrosion control program should be implemented. This may involve applying corrosion inhibitors, utilizing cathodic protection systems, and periodically re-coating the pipes. Regular monitoring of water chemistry parameters, such as pH levels and chlorine content, can further prevent corrosion and prolong the pipes' lifespan. Lastly, maintaining accurate records of maintenance activities, such as inspections, cleaning, and repairs, is essential for tracking the condition of the pipes over time. This enables proactive planning for future maintenance and replacement requirements, ensuring the efficient and reliable functioning of ductile iron pipes.

Q: How many meters does the cast iron water supply pipe dn150,1 tons?: Centrifugal ductile iron pipe water-cooled metal type centrifuge daira executed by.Dg100 mm following the closed mold mold jacket cooling, more than Dg150rnm with rain type cooling.

Q: How do ductile iron pipes perform in earthquake-induced ground movements?: Ductile iron pipes have proven to be a reliable and resilient choice for underground infrastructure, including in areas prone to earthquake-induced ground movements. The unique properties of ductile iron, such as its strength and flexibility, allow it to withstand the effects of ground movements during an earthquake. During an earthquake, the ground experiences shaking and shifting, which can exert significant forces on underground pipes. Ductile iron pipes have the ability to flex under these forces, absorbing the energy and reducing the risk of failure. They can withstand substantial ground movements without cracking or breaking, which ensures the continued flow of water or other fluids. In addition, ductile iron pipes have excellent resistance to corrosion and are highly durable, making them suitable for long-term use in earthquake-prone areas. This reduces the need for frequent maintenance or replacement, providing cost-effective and reliable infrastructure solutions. Furthermore, the joints used in ductile iron pipe installations are designed to accommodate movement and allow for slight adjustments during ground shifts. This flexibility prevents the pipes from becoming dislodged or separated, maintaining the integrity of the system. Overall, ductile iron pipes have a proven track record of performance in earthquake-induced ground movements. They offer resilience, flexibility, and durability, ensuring the continuous functioning of water and sewer systems even in areas prone to seismic activity.

Q: How are ductile iron pipes protected against stray current corrosion?: Ductile iron pipes are protected against stray current corrosion through the implementation of various measures. One common method is the installation of a protective coating, such as an epoxy or zinc coating, on the external surface of the pipes. This coating acts as a barrier, preventing direct contact between the pipe and the surrounding soil or water. Additionally, cathodic protection systems, such as impressed current or sacrificial anode systems, can be employed to further protect the pipes. These systems help to control and redirect stray currents, minimizing their impact on the ductile iron pipes and preventing corrosion.

Q: What are the typical joint restraint systems used in ductile iron pipes?: The typical joint restraint systems used in ductile iron pipes include mechanical joint restraints, push-on joint restraints, and restrained joint systems. 1. Mechanical Joint Restraints: These systems use mechanical devices to secure the pipe joints. The most common type of mechanical joint restraint is the gland-type restraint, which consists of a gland and a follower. The gland is placed over the pipe joint and tightened using bolts, creating a tight seal and preventing movement. 2. Push-On Joint Restraints: Push-on joint restraints utilize a rubber gasket to create a watertight seal between the pipe sections. These restraints do not require any additional devices or bolts to secure the joint. The gasket creates enough friction and compression to prevent the pipe from separating. 3. Restrained Joint Systems: Restrained joint systems provide a high level of joint integrity and resistance to longitudinal movement. These systems typically use a combination of mechanical joint restraints and push-on joint restraints. They may also incorporate additional elements such as harnesses, rods, or wedges to provide extra support and prevent joint separation. It is important to note that the specific joint restraint system used in ductile iron pipes may vary depending on the application, pipe diameter, and operating conditions. The selection of the appropriate joint restraint system is crucial to ensure the structural integrity and longevity of the pipeline.

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