T Type Ductile Iron Pipe DN400 Socket spigot pipe

T Type Ductile Iron Pipe DN400 Socket spigot pipe

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 200 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 maximum operating pressure for ductile iron pipes?: The maximum operating pressure for ductile iron pipes typically ranges from 350 to 500 psi, depending on the specific diameter and class of the pipe.

Q: What are the specifications of cast iron pipes?: Compared with grey cast iron pipe, ductile iron pipe has higher strength, better toughness, thinner tube wall, less metal consumption, and can bear higher pressure. The effective length is 5 meters and 6 meters. According to the wall thickness, it is divided into two grades P and G. It is the development direction of cast iron pipe.

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 high pressure and corrosive environments, making it suitable for such applications. Additionally, its flexibility allows it to accommodate ground movement and settle effectively, reducing the risk of damage to the pipelines.

Q: How do ductile iron pipes handle thermal cycling in industrial applications?: Ductile iron pipes are known for their exceptional ability to handle thermal cycling in industrial applications. Thermal cycling refers to the fluctuation in temperature that occurs during the operation of various industrial processes. These pipes are designed to withstand the stresses caused by thermal expansion and contraction, making them highly suitable for environments with significant temperature variations. One of the key characteristics of ductile iron pipes is their high thermal conductivity. This means that they can efficiently conduct heat away from the hot areas, minimizing the impact of thermal cycling. Additionally, ductile iron pipes have a low coefficient of thermal expansion, which means that they expand and contract at a slower rate compared to other materials. This helps to reduce the stresses imposed on the pipes during thermal cycling. Furthermore, ductile iron pipes have excellent mechanical properties, including high tensile strength and impact resistance. These properties enable the pipes to withstand the mechanical stresses that may arise due to thermal cycling. They can resist the formation of cracks or fractures, ensuring the integrity and longevity of the pipes in industrial applications. Moreover, ductile iron pipes have a high resistance to corrosion and oxidation. This is particularly important in industrial settings where the pipes may be exposed to aggressive chemicals or harsh environments. The corrosion resistance of ductile iron pipes ensures that they can withstand the corrosive effects of the process fluids and gases, even during thermal cycling. In summary, ductile iron pipes are well-equipped to handle thermal cycling in industrial applications. Their high thermal conductivity, low coefficient of thermal expansion, excellent mechanical properties, and resistance to corrosion make them a reliable choice for environments with significant temperature variations. These pipes can effectively withstand the stresses caused by thermal cycling, ensuring their durability and longevity in industrial settings.

Q: Are ductile iron pipes suitable for installation in areas with high traffic loads?: Yes, ductile iron pipes are suitable for installation in areas with high traffic loads. Due to their inherent strength and durability, ductile iron pipes can withstand heavy loads and are commonly used in applications where there is significant vehicular traffic.

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 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 gravity sewer systems?: Yes, ductile iron pipes can be used for gravity sewer systems. Ductile iron pipes are known for their durability, strength, and resistance to corrosion, making them suitable for various applications including sewer systems. These pipes have excellent tensile strength and can withstand high pressure and heavy loads, making them ideal for gravity sewer systems where wastewater flows by gravity rather than being pumped. Additionally, ductile iron pipes have a long lifespan and require minimal maintenance, making them a cost-effective choice for sewer infrastructure.

Q: Can ductile iron pipes be used in areas with high water velocity?: Yes, ductile iron pipes can be used in areas with high water velocity. Ductile iron pipes are known for their strength and durability, making them suitable for handling high water velocities and pressures. They have a high resistance to corrosion and can withstand the forces generated by fast-moving water. Additionally, ductile iron pipes are designed to have smooth internal surfaces, which helps in reducing friction and minimizing the impact of high water velocity on the pipe. However, it is important to ensure proper installation and maintenance practices to maximize the performance and longevity of the ductile iron pipes in high water velocity areas.

Q: What is the DN400 installation charge for ductile iron pipes?: The wages paid under special circumstances: refers to the provisions of the state laws, regulations and policies, due to illness, injury, maternity leave, family planning leave, funeral leave, leave, leave, leave, regular shutdown, implementation of national or social obligations due to pay a certain percentage of wage hourly wage or salary when.

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