DUCTILE IRON PIPE DN300

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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: Ductile cast iron can replace copper sleeve: The tensile and compressive capacity of the ball milled cast iron is not as good as that of copper. The hardness of Rongchang graphite copper sheath can reach HB210

Q: Are ductile iron pipes suitable for use in chemical storage tanks?: No, ductile iron pipes are not suitable for use in chemical storage tanks.

Q: What is the expected joint restraint method for ductile iron pipes?: The expected joint restraint method for ductile iron pipes is typically mechanical joint restraints, such as gland and follower glands or wedge-action restraints, which provide a secure and reliable connection while allowing for expansion and contraction of the pipes.

Q: What are the specifications for the installation of water ball iron pipes?: Trench excavation: the width of the groove should be pressed by the meter: B=D1+2 (b1+b2). Type B: the width of excavation at the bottom of the pipe groove (mm) D1 the width of the outer edge of the pipe structure (mm) B1 - the width of the face of the pipe side (mm) B2 - the support width of the side of the pipe (mm).

Q: What is the typical cost of maintenance for ductile iron pipes?: The typical cost of maintenance for ductile iron pipes can vary depending on several factors. These factors include the age and condition of the pipes, the location and accessibility of the pipes, and the specific maintenance requirements. In general, regular maintenance activities for ductile iron pipes may include cleaning and flushing to remove sediment and debris, inspecting for leaks or cracks, repairing or replacing damaged sections, and applying protective coatings to prevent corrosion. These maintenance tasks are essential to ensure the longevity and performance of the pipes. The cost of maintenance for ductile iron pipes can range from a few hundred dollars to several thousand dollars per year, depending on the extent of maintenance required. Routine maintenance activities such as cleaning and inspection may have lower associated costs, while more significant repairs or replacements can be more expensive. Additionally, the cost of maintenance can be influenced by external factors such as labor costs, materials, and contractor fees. It is crucial to consider these factors and consult with professionals or utility companies for accurate cost estimates specific to your location and situation. Overall, while the cost of maintenance for ductile iron pipes can vary, investing in regular maintenance is essential to extend the lifespan and functionality of the pipes, minimize disruptions, and prevent costly repairs or replacements in the long run.

Q: Can ductile iron pipes be repaired if damaged?: Yes, ductile iron pipes can be repaired if they are damaged. The repair process involves several steps. Firstly, the damaged section of the pipe needs to be identified and isolated. Once that is done, the damaged portion of the pipe is typically cut out and removed. A new section of pipe is then inserted and connected to the existing pipeline using appropriate methods such as welding or mechanical jointing. The repaired section is then tested to ensure its integrity and functionality. It is worth noting that the repair process may vary depending on the extent and nature of the damage, and it is always recommended to consult with professionals who specialize in ductile iron pipe repairs to ensure proper and effective restoration.

Q: How are ductile iron pipes tested for hydrostatic pressure?: For water and wastewater applications, ductile iron pipes are widely used because of their strength and durability. To guarantee their quality and dependability, these pipes undergo hydrostatic pressure testing. The process of hydrostatic pressure testing involves applying internal pressure on the ductile iron pipes at levels higher than their normal operating pressure. This is done to evaluate their ability to withstand the maximum pressure they may encounter during their service life. To begin the testing, a sample set of pipes is carefully selected from a production batch or shipment. These samples are meticulously prepared by removing any surface coatings or debris that could affect the accuracy of the test results. The prepared samples are then placed in a specially designed test rig or test line. The test rig is equipped with all the necessary connections, valves, and gauges to accurately control and monitor the test conditions. Once the samples are secured in the test rig, water or another suitable test fluid is slowly introduced into the pipes. The pressure is gradually increased to a preset level, typically surpassing the expected operating pressure by a certain factor. This elevated pressure is maintained for a specified duration, usually several hours, to evaluate the structural integrity and leak resistance of the pipes. Throughout the test, the pipes are closely monitored for any signs of leakage, deformation, or failure. Skilled technicians or engineers observe the pressure gauges and visually inspect the pipes for any visible defects or abnormalities. Additionally, automated systems may be used to continuously record and analyze the pressure readings, ensuring accurate data collection. After the specified test duration, the pressure is gradually released, and the pipes are meticulously inspected for any permanent deformation or residual stress. This inspection may involve visual examination, dimensional measurements, or non-destructive testing techniques like ultrasonic testing or magnetic particle inspection. The test results are then assessed against the relevant industry standards or specifications to determine if the pipes comply with safety and performance requirements. If the pipes pass the hydrostatic pressure test, they are considered suitable for their intended application. However, if any issues or failures are identified, further investigation, analysis, or corrective actions may be necessary before the pipes can be approved for use. In conclusion, hydrostatic pressure testing plays a vital role in ensuring the quality and reliability of ductile iron pipes. By subjecting these pipes to rigorous testing procedures, manufacturers can provide customers with pipes that meet the highest standards of safety and performance.

Q: Can ductile iron pipes be used for underground sewage systems?: Yes, ductile iron pipes can be used for underground sewage systems. Ductile iron is a strong and durable material that is resistant to corrosion and can handle the high pressure and constant flow of sewage. Additionally, ductile iron pipes have a long lifespan and require minimal maintenance, making them suitable for underground sewage systems.

Q: The difference between ductile iron pipe and steel pipe used in pipe jacking: Comparison between ductile iron pipe and universal cast iron pipe: the process of making ductile iron pipe is cast by adding alkaline earth metal or rare metal such as magnesium and calcium in the raw material of common cast iron pipe.

Q: The plug connection DN800 ductile iron pipe has been installed. "Shall I think so?": Ductile iron pipes are defined as pipes made by casting more than 18 of casting molten iron by adding a spheroidal agent and then centrifugally centrifugally cast by a centrifugal nodular cast iron machineDuctile iron pipe ([span]Ductile Cast Iron Pipes), referred to as ball pipe, ductile iron pipe and ductile iron pipe etc..

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