• Self-restrained Joint Ductile Iron Pipe System 1
  • Self-restrained Joint Ductile Iron Pipe System 2
  • Self-restrained Joint Ductile Iron Pipe System 3
Self-restrained Joint Ductile Iron Pipe

Self-restrained Joint Ductile Iron Pipe

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Loading Port:
China Main Port
Payment Terms:
TT or LC
Min Order Qty:
1 Metric Ton m.t.
Supply Capability:
300000 Metric Tons per Year m.t./month

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Overview of Ductile Iron Pipe

Ductile cast iron, also called ductile iron, spheroidal graphite iron, or nodular cast iron, is a type of cast iron invented in 1943. While most varieties of cast iron are brittle, ductile cast iron is much more flexible and elastic, due to its nodular graphite inclusions.

Graphite particles exist in the form of sphericity in ductile cast iron. Sizes graphite particle are restricted to 6 -7 class and spheroidizing rate should not be less than 80%. Thus after the spheroidizing process, ductile iron will be endowed with mechanical properties of both cast iron and steel.

Much of the production of ductile iron is in the form of ductile cast iron pipe, used for water supply and sewerage design. Ductile cast iron pipe is stronger and easier to tap, requires less support and provides greater flow area compared with pipes made from other materials like PVC, concrete, polyethylene or steel. Ductile Iron Pipe is the most widely-used pipeline product in water supply and water drain/sewage projects.

 

 Self-restrained Joint Ductile Iron Pipe

General introduction of Self-restrained Joint Ductile Iron Pipe

•Material : Ductile Cast Iron

•Size Range : DN 80mm to DN 1200mm

•Unit Effective Length : 6m or 5.7m or negotiable

•Manufacture Standard: ISO 2531:1998/ EN 545:2006/EN 598:2007

•Annual capacity : 300,000 tons

•Coating Exterior: Zinc 130g/m2 according to ISO 8179-1 and bitumen coating 70 microns.

•Cement Interior: Portland Cement/ High Alumina Cement/ Sulphate Resisting Cement Lining according to ISO 4179

•Special requirements on external coating and internal lining can be applied

•We also provide accessories such as SBR/EPDM rubber gaskets, lubricant paste, pipe caps, PE sleeves, etc.

 

Mechanical Properties

Item

Tensile Strength (N/mm2)

Elongation(%)

Proof Stress (N/mm2)

Hardness HB

DN80

TO DN2600

DN80 TO DN1000

DN1100 TO DN2000

DN80 TO DN1000

DN100 TO DN2000

Pipe

≥420

≥10

≥7

≥270

≥300

≤230

Fittings

≥420

≥5

≥300

≤250

Standard Lining and Coating

External Protection

Metallic zinc complying with the standard ISO8179,and bitumen,or special protective coating according to the customer’s requirement.

Notes:

.            Pipes and fittings conform to the requirements of International Standard ISO 2531,British Eurpean Standard BS

.            EN545,and their extensions. If information given in English and Chinese differs,the English version prevails.

.            Dimensions and masses of pipes and fittings are approximate and are for refererces only;accurate dimensions and

.            masses should be confirmed with us at the time of placing order. Flanged joint pipes and fittings are generally

.            available with PN10,PN16 and PN25. Socketed joint pipes and fittings generally available with T type and K type joints.

Features of Self-restrained Joint Ductile Iron Pipe:

.            Ductile Iron Pipe offers proven reliability and the quality.

.            It is quick and easy installation.

.            The ductile iron pipe has high pressure capability.

Application:

Used for water and sewer lines.

Production Process

Much of the production of ductile iron is in the form of ductile cast iron pipe, used for water supply and sewerage design. Ductile iron pipe is stronger and easier to tap, requires less support and provides greater flow area compared with pipes made from other materials like PVC, concrete, polyethylene or steel.

 

 Self-restrained Joint Ductile Iron Pipe

Specification of Self-restrained Joint Ductile Iron Pipe:

Standard wall thickness of Self-restrained Joint Ductile Iron Pipe

Nominal Diameter

Wall Thickness(mm)

DN(mm)

Pipe

Fittings

Class C

K8

K9

K10

K12

K12

K14

80

4.4

6

6.0

7

8.1

100

4.4

6.0

7.2

8.4

125

4.5

6.3

7.5

8.8

150

4.5

6.3

7.8

9.1

200

4.7

6.3

8.4

9.8

250

5.5

6.8

7.5

9

9

10.5

300

6.2

6.4

7.2

8

9.6

9.6

11.2

350

6.3

6.8

7.7

8.5

10.2

10.2

11.9

400

6.5

7.2

8.1

9

10.8

10.8

12.6

450

6.9

7.6

8.6

9.5

11.4

11.4

13.3

500

7.5

8

9

10

12

12

14

600

8.7

8.8

9.9

11

13.2

13.2

15.4

700

8.6

9.6

10.8

12

14.4

14.4

16.8

800

9.6

10.4

11.7

13

15.6

15.6

18.2

900

11.6

11.2

12.6

14

16.8

16.8

19.6

1000

12.6

12

13.5

15

18

18

21

1200

13.6

13.6

15.3

17

20.4

20.4

22.8

1400

15.7

15.2

17.1

19

22.8

22.8

26.6

1500

16.7

16

18

20

24

24

31

1600

17.7

16.8

18.9

21

25.2

25.2

29.4

1800

19.7

18.4

20.7

23

27.6

27.6

32.2

2000

21.8

20

22.5

25

30

30

35

 

Self-restrained Joint

Self-restrained Type is a push-in self anchored joint. The principle of joint anchoring consists in transmitting the axial forces from one pipeline to the following one, thus ensuring that the joint does not come apart.

The application of self-restrained joints is of particular interest where congested conditions preclude concrete anchor block constructions or in poorly cohesive soils.Self-restrained joints combine the advantages of flexible joint pipes and welded joint pipes.

 Photo of Self-restrained Joint Ductile Iron Pipe

 Self-restrained Joint Ductile Iron Pipe

 

 self-restrained ductile iron pipe

 

Q:What is the expected hydraulic efficiency of ductile iron pipes?
The expected hydraulic efficiency of ductile iron pipes can vary depending on several factors including pipe diameter, roughness of the pipe surface, flow rate, and length of the pipe. However, ductile iron pipes are generally known to have excellent hydraulic efficiency. Ductile iron pipes have a smooth inner surface, which reduces frictional losses and allows for efficient water flow. The smoothness of the pipe surface helps minimize energy losses due to turbulence and resistance. Additionally, ductile iron pipes are designed to have a consistent and uniform internal diameter, which further enhances their hydraulic efficiency. Studies have shown that ductile iron pipes can achieve hydraulic efficiencies ranging from 85% to 95%. This means that a significant portion of the energy put into the system is effectively transferred to the water, resulting in minimal losses. It is important to note that the hydraulic efficiency of ductile iron pipes can be influenced by factors such as corrosion, scaling, and sediment buildup over time. Regular maintenance and proper cleaning can help maintain the hydraulic efficiency of ductile iron pipes. Overall, ductile iron pipes are considered to be highly efficient in terms of hydraulic performance and are widely used in water distribution systems due to their ability to deliver water with minimal energy losses.
Q:How do ductile iron pipes handle soil movement?
Ductile iron pipes are known for their excellent strength and durability, making them highly capable of handling soil movement. These pipes are designed to resist external loads and pressures caused by soil settlement, ground shifting, or other environmental factors. One of the key features of ductile iron pipes is their flexibility. Unlike rigid materials such as cast iron or concrete pipes, ductile iron pipes have a certain level of elasticity that allows them to withstand soil movement without cracking or breaking. This flexibility enables the pipes to absorb the stresses induced by the soil, preventing any significant damage to the pipeline system. Furthermore, ductile iron pipes possess high tensile strength, which means they can resist pulling forces resulting from soil movement. The pipes can withstand the expansion and contraction of the surrounding soil, reducing the risk of pipe deformation or failure. Moreover, ductile iron pipes are often installed with proper bedding and backfilling techniques to further enhance their ability to handle soil movement. Adequate bedding materials, such as crushed stone or sand, are used to provide stable support to the pipes and distribute the external loads evenly. This helps to minimize the impact of soil movement on the pipes and maintain their structural integrity. In summary, ductile iron pipes are designed to effectively handle soil movement due to their flexibility, high tensile strength, and proper installation methods. These pipes can withstand the stresses induced by soil settlement, ground shifting, or other soil-related factors, ensuring reliable and long-lasting performance in various environmental conditions.
Q:What is the average diameter range of ductile iron pipes?
The average diameter range of ductile iron pipes can vary depending on the specific application and industry standards. However, in general, ductile iron pipes are available in a wide range of diameters to meet various requirements. Commonly, the average diameter range for ductile iron pipes can start from as small as 4 inches (100 mm) and go up to 64 inches (1600 mm) or even larger. These sizes are often used for water distribution, sewer systems, and other infrastructure projects. It is important to note that the specific diameter range of ductile iron pipes can be influenced by factors such as local regulations, project specifications, and engineering considerations. Therefore, it is recommended to consult industry standards and relevant authorities to determine the appropriate diameter range for a specific application.
Q:Can ductile iron pipes be used in nuclear power plants?
Ductile iron pipes are suitable for use in nuclear power plants due to their improved flexibility and strength compared to traditional cast iron pipes. They are known for their durability, resistance to corrosion, and ability to withstand high pressure and temperature conditions. These pipes are a reliable and robust choice for transporting water, coolant, and other fluids in nuclear power plants. However, it is crucial to consider the specific requirements and regulations of each power plant before selecting the pipe material. It is necessary to ensure proper testing, certification, and compliance with nuclear industry standards to guarantee the safe and efficient operation of the power plant.
Q:Can ductile iron pipe be used for chemical processing plant applications?
Yes, ductile iron pipe can be used for chemical processing plant applications. It is durable, corrosion-resistant, and has high tensile strength, making it suitable for transporting various chemicals and fluids in such environments. Additionally, its flexibility and ease of installation make it a practical choice for piping systems in chemical processing plants.
Q:What are the different types of fittings available for ductile iron pipe?
Ductile iron pipe offers a variety of fittings to accommodate different plumbing or piping systems. These fittings come in various configurations to connect, redirect, or branch off the pipe. One frequently used fitting is the flanged fitting, which has a flange or lip on one end for easy bolted connection to another flanged component. Flanged fittings are ideal for applications requiring a tight seal, such as water or sewage systems. Another option is the mechanical joint fitting, which utilizes a gasket and mechanical bolts to securely connect two pipe pieces. This type of fitting is often employed in underground water or sewer systems. Push-on fittings are also popular for ductile iron pipe. These fittings have a rubber gasket that is compressed onto the pipe, ensuring a watertight seal. They are quick and easy to install, making them perfect for applications where speed and efficiency are crucial. When a change in direction is necessary, ductile iron pipe fittings like elbows or bends are utilized. These fittings smoothly alter the pipe's direction without causing significant flow restrictions. Furthermore, saddle fittings are available for ductile iron pipe. These fittings create a branch connection on an existing pipeline without the need for cutting or welding. They are commonly used in irrigation or fire protection systems. In conclusion, the range of fittings for ductile iron pipe provides options to meet the specific requirements of different plumbing or piping systems. Whether it's flanged fittings for a tight seal, mechanical joint fittings for underground applications, push-on fittings for quick installation, or specialized fittings like elbows or saddle fittings, each type serves a specific purpose within the overall plumbing or piping system.
Q:How are ductile iron pipes different from cast iron pipes?
Ductile iron pipes are different from cast iron pipes in terms of their composition and properties. Ductile iron pipes are made from a type of cast iron that has been treated with magnesium to improve its strength and flexibility. This makes ductile iron pipes more durable, impact-resistant, and less prone to cracking or breaking compared to traditional cast iron pipes. Additionally, ductile iron pipes have a higher tensile strength, allowing them to withstand higher internal and external pressures. In summary, ductile iron pipes are a more modern and advanced version of cast iron pipes, offering improved performance and longevity.
Q:What are the different methods for restraining ductile iron pipe?
Some different methods for restraining ductile iron pipe include using thrust blocks, tie rods, and flexible couplings. Thrust blocks are concrete structures that are placed at bends or fittings in the pipeline to resist the axial thrust forces. Tie rods are used to connect the pipe to fixed points, providing additional support and preventing movement. Flexible couplings can also be used to restrain pipe by connecting sections together, allowing for some movement while still maintaining stability.
Q:Are there any special considerations for installing ductile iron pipe in rocky soils?
Yes, there are several special considerations for installing ductile iron pipe in rocky soils. Firstly, the rocky soil can pose challenges during the excavation process. The presence of rocks can increase the difficulty and time required for trenching. Special excavation equipment may be needed to break through the rocks and create a suitable trench for the pipe installation. Secondly, the rocky soil can cause abrasion and damage to the outer surface of the ductile iron pipe during installation. This can potentially compromise the integrity of the pipe and lead to leaks or breakages in the future. To mitigate this risk, it is recommended to use protective measures such as rock shields or padding around the pipe to minimize direct contact with the rocks. Additionally, the presence of rocks can affect the backfilling process. Proper backfilling is crucial to provide support and stability to the installed pipe. However, rocks can hinder the proper compaction of the backfill material, which may result in uneven support and potential movement of the pipe. It is important to carefully select and place the backfill material, ensuring it is free from larger rocks and adequately compacted to provide sufficient support. Furthermore, the rocky soil may also impact the installation of fittings and joints. The hard rocks can make it challenging to properly align and connect the pipe with fittings or make secure joints. Special care must be taken during the installation process to ensure proper alignment and secure connections, which will prevent leaks and ensure the longevity of the ductile iron pipe system. In conclusion, installing ductile iron pipe in rocky soils requires special considerations to overcome challenges related to excavation, abrasion, backfilling, and fitting installation. By taking these factors into account and implementing appropriate measures, the installation process can be successfully carried out, and the pipe system can function effectively in rocky soil conditions.
Q:How does ductile iron pipe perform in corrosive environments?
Ductile iron pipe performs exceptionally well in corrosive environments due to its inherent corrosion resistance properties. The pipe's protective lining and external coatings provide an additional layer of defense against corrosion, ensuring long-term durability and reliability even in harsh conditions.
HYDROTECH,possesses 2 blast furnaces with 450 Cubic meter , 3 sets of 3000kw blast furnace gas generator and 6 ductile iron pipe centrifugal machines. Yongtong possesses a strong production capacity, 1.3 million tons casting and ductile iron and 0.4 million tons ductile iron pipe, the diameter ductile iron pipe is from 80mm to 1200mm.

1. Manufacturer Overview

Location Henan, China
Year Established 1958
Annual Output Value Below US$1 Million
Main Markets Mid East, Africa, South Asia, Eastern Asia
Company Certifications ISO 9001:2008;ISO2531:2000

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Tianjin; Qingdao
Export Percentage 1% - 10%
No.of Employees in Trade Department 3000 People
Language Spoken: English; Chinese; Spain; Alabic
b)Factory Information  
Factory Size: Above 150,000 square meters
No. of Production Lines Above 6
Contract Manufacturing OEM Service Offered; Design Service Offered
Product Price Range Average

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