DUCTILE IRON PIPE DN100 K8

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Loading Port:: China Main Port

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High Tensile Steel Rebar ASTM BS4449 Rebar Steel

Specification:

1) The standard of pipe: ISO2531:1998, K9

2) Effective length: 6m

3) Inner cement line: Portland cement line as per ISO4179

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

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

6) With 100% quantity of NBR ring, or SBR ring, or EPDM ring as per ISO4633

7) DN80mm-800mm

8) High strength, lighter than grey iron, good corrosion resistance, no furring, small flow resistance, easy fixing, long life tome about 100 yeas

9) Produced by Hangzhou chunfeng machine

10) Checked by automatic inspection equipment

11) 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

12) 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

13) T type mechanical joint

14) Packing: in bulk or container

Q: Are ductile iron pipes suitable for use in cold climates?: Ductile iron pipes are well-suited for cold climates due to their exceptional strength and durability. This makes them a reliable choice for various applications, such as water supply systems, sewage systems, and industrial piping. In freezing temperatures, ductile iron pipes are highly resistant to cracking or breaking. This is because of their unique metallurgical composition and structure. They possess a high tensile strength and can endure the expansion and contraction resulting from freezing and thawing cycles. Additionally, their smooth internal surface prevents ice or sediment buildup, ensuring efficient flow and reducing the risk of blockages. Overall, ductile iron pipes are a dependable and appropriate option for use in cold climates.

Q: How are ductile iron pipes protected against internal scaling or buildup?: Various methods are utilized to protect ductile iron pipes against internal scaling or buildup. One widely employed technique involves applying a cement mortar lining to the inner surface of the pipes. This lining serves as a protective barrier, preventing the formation of scale or buildup and facilitating the smooth flow of water or other fluids. Moreover, an additional layer of polyethylene or other appropriate materials can be coated onto the pipes to provide an extra level of protection against scaling or buildup. This coating acts as a barrier between the water and the iron surface, thereby reducing the likelihood of corrosion or scale formation. Regular maintenance and cleaning play a crucial role in preventing internal scaling or buildup in ductile iron pipes. By flushing the pipes with high-pressure water or employing chemical treatments, any accumulated scale or debris can be effectively removed, ensuring the pipes remain clean and fully functional. Furthermore, proper water treatment is essential in minimizing the risk of scaling or buildup. By implementing suitable water treatment processes, such as pH adjustment or the use of corrosion inhibitors, the quality of the water can be maintained, preventing the formation of scale or buildup inside the pipes. In conclusion, various measures, including cement mortar lining, pipe coating, regular maintenance, cleaning, and proper water treatment, are employed to protect ductile iron pipes against internal scaling or buildup. These measures ensure the longevity and efficiency of the pipes, minimizing the chances of clogging or reduced flow capacity.

Q: How much water seepage is allowed in the water pressure test for water hose DN300?: Test method: metal composite pipe and water pipe system 10min observed in the test pressure, the pressure drop should be no more than 0.02MPa, and then reduced to working pressure check should be no leakage of plastic pipe; water supply system should be in the test pressure regulator 1H, pressure drop shall not exceed 0.05MPa, then stabilized at 1.15 times the working pressure of the state under 2h, the pressure drop shall not exceed 0.03MPa, and check each connection must not leak.

Q: What is ductile iron pipe?: Ductile iron pipe is a kind of cast iron pipe. In quality, the spheroidization of cast iron pipes is controlled to be 1-3 (spheroidization rate 80%), so the mechanical properties of the material have been better improved, with the nature of iron and the properties of steel. Ductile cast iron pipe after annealing, the microstructure is ferrite and pearlite, good mechanical properties, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc..

Q: How are ductile iron pipes different from PVC pipes?: Ductile iron pipes and PVC pipes are two different materials commonly used in plumbing and water distribution systems. The main difference between ductile iron pipes and PVC pipes lies in their composition and properties. Ductile iron pipes are made from a specific type of cast iron that contains graphite nodules, which give the material its ductility and flexibility. This allows the pipes to withstand high pressures and heavy loads without breaking or cracking. Ductile iron pipes are known for their strength and durability, making them ideal for underground applications and areas with high traffic loads. On the other hand, PVC pipes are made from a type of plastic called polyvinyl chloride. PVC pipes are rigid and inflexible, and they do not have the same strength as ductile iron pipes. PVC pipes are commonly used in low-pressure applications, such as residential plumbing systems, irrigation, and drainage systems. They are lightweight, easy to install, and resistant to corrosion, making them a popular choice for residential and non-industrial applications. Another difference between ductile iron pipes and PVC pipes is their cost. Ductile iron pipes tend to be more expensive due to their higher material and production costs. PVC pipes, on the other hand, are relatively cheaper to manufacture, making them a cost-effective option for many plumbing projects. In summary, the main differences between ductile iron pipes and PVC pipes are their composition, strength, flexibility, and cost. Ductile iron pipes are made from cast iron and are known for their strength and durability, while PVC pipes are made from plastic and are more lightweight and cost-effective. The choice between ductile iron pipes and PVC pipes depends on the specific requirements of the plumbing project, including pressure, load-bearing capacity, and budget considerations.

Q: How do ductile iron pipes handle ground settlement near construction foundations?: Ductile iron pipes are known for their strength and durability, making them highly resistant to ground settlement near construction foundations. Due to their flexible nature, these pipes can withstand minor ground movements without experiencing significant damage or failure. The inherent flexibility of ductile iron pipes allows them to adapt and adjust to ground settlement, ensuring the integrity of the pipeline system even in challenging conditions.

Q: Are ductile iron pipes suitable for underground parking structures?: Yes, ductile iron pipes are suitable for underground parking structures. Ductile iron pipes are known for their strength and durability, making them an ideal choice for underground applications where they may be subjected to heavy loads or potential impacts. Additionally, ductile iron pipes have excellent corrosion resistance, which is crucial in underground environments where they may be exposed to moisture and other corrosive elements. The high tensile strength and flexibility of ductile iron pipes also allow them to withstand ground movements and settle without cracking or breaking, further enhancing their suitability for underground parking structures. Overall, ductile iron pipes provide a reliable and long-lasting solution for the drainage and water supply needs of underground parking facilities.

Q: What is the expected deflection limit of ductile iron pipes?: Several factors, including pipe diameter, wall thickness, and soil conditions, determine the expected deflection limit of ductile iron pipes. According to industry standards, it is recommended that ductile iron pipes used for underground installations should not exceed a deflection limit of 2%. In other words, the maximum allowable deflection would be 2% of the pipe's diameter. It is important to be aware that surpassing the deflection limit can result in various issues, such as reduced flow capacity, higher chances of pipe failure, and compromised structural integrity. Therefore, it is crucial to carefully consider and adhere to the suggested deflection limits when designing and installing ductile iron pipes to ensure their long-term performance and reliability.

Q: How can the steel plastic composite pipe be connected with the cast iron pipe?: The hoop has the advantages of beautiful appearance, convenient operation, strong clamping force, good sealing performance, etc.. Mainly used for connecting and fastening vehicle, ship, diesel engine, gasoline engine, machine tools, fire, and other machinery and equipment, chemical equipment general nylon hose, plastic hose, hose cloth, water interface and seal etc..

Q: What is the expected leakage rate of ductile iron pipes?: The expected leakage rate of ductile iron pipes can vary depending on various factors such as the age and condition of the pipes, the quality of installation, and the presence of any external factors that may impact the integrity of the pipes. However, in general, ductile iron pipes are known for their durability and low leakage rates compared to other types of pipes. According to industry standards and studies, the expected leakage rate of well-maintained and properly installed ductile iron pipes is typically less than 0.5 liters per pipe per day (LPPD). This leakage rate is considered acceptable and meets the requirements set by various regulatory bodies and organizations. It is important to note that regular maintenance and inspections are crucial in maintaining the low leakage rate of ductile iron pipes. By identifying and repairing any potential leaks or damages promptly, the overall leakage rate can be effectively minimized. Furthermore, advancements in manufacturing techniques and improvements in pipe design have led to the development of more leak-resistant ductile iron pipes. These pipes may have even lower expected leakage rates than the industry average, further enhancing their overall performance and reliability. Ultimately, while the expected leakage rate of ductile iron pipes can vary, it is generally considered to be low when properly installed and maintained, making them a reliable choice for various water distribution and transmission systems.

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