Ductile iron pipes, also known as nodular cast iron pipes, ductile cast iron pipes, spheroidal graphite cast iron pipes, or simply DIP, are a revolutionary advancement in the field of piping systems. These pipes are engineered to offer superior strength, durability, and flexibility compared to traditional cast iron pipes, making them an ideal choice for a wide range of applications, particularly in water distribution systems.
The term "ductile" refers to the ability of the material to deform under stress without breaking, a characteristic that is achieved through a unique manufacturing process. In the production of ductile iron pipes, a small amount of magnesium or cerium is added to the molten iron, causing the graphite to form in a spherical shape rather than the flake-like structure found in regular cast iron. This transformation significantly enhances the mechanical properties of the iron, increasing its tensile strength, impact resistance, and ductility.
Centrifugally cast ductile iron pipes are the most common type, manufactured using a centrifugal casting process. This method involves pouring molten iron into a rotating mold, which forces the metal to the outer walls of the mold, creating a pipe with a uniform thickness and density. The result is a high-quality pipe with excellent dimensional accuracy and a smooth internal surface, reducing friction and improving flow efficiency.
Ductile iron pipes come in various configurations to suit different installation requirements. Flanged ductile iron pipes feature a flat, circular flange at the end of the pipe, which allows for easy connection to other pipes or fittings using bolts and gaskets. This type of connection is commonly used in applications where easy disassembly and maintenance are required. On the other hand, socketed end ductile iron pipes have a bell-shaped socket at one end and a spigot at the other, enabling a simple and secure joint when the spigot is inserted into the socket and sealed with a rubber gasket. This type of connection is widely used in underground water and sewerage systems due to its leak-proof properties and ease of installation.
Pipe fittings play a crucial role in the assembly of ductile iron pipe systems. They include elbows, tees, reducers, couplings, and other components that allow for changes in direction, size, or connection type. These fittings are also made from ductile iron, ensuring compatibility and strength throughout the system. They are designed to meet strict industry standards, guaranteeing reliable performance and long-term durability.
One of the key applications of ductile iron pipes is in water distribution systems. Their high strength and corrosion resistance make them suitable for transporting potable water over long distances, both above and below ground. The smooth internal surface of the pipes minimizes friction, reducing energy consumption and ensuring a consistent flow of water. Additionally, ductile iron pipes are resistant to external factors such as soil movement, temperature changes, and impact, making them a reliable choice for water supply networks in various environments.
To further enhance their performance and lifespan, ductile iron pipes are often treated with pipe coatings. These coatings provide an additional layer of protection against corrosion, chemical attack, and abrasion. Common coating materials include zinc, epoxy, polyethylene, and polyurethane. Zinc coatings, in particular, are widely used due to their excellent corrosion resistance properties. The zinc forms a protective layer on the surface of the pipe, which reacts with the environment to create a barrier that prevents rust and other forms of corrosion.
In conclusion, ductile iron pipes offer a multitude of advantages over traditional cast iron pipes, making them the preferred choice for many applications in the water distribution and other industries. Their superior strength, durability, flexibility, and ease of installation, combined with the availability of a wide range of pipe fittings and coating options, make them a reliable and cost-effective solution for piping systems. Whether it's for a small residential project or a large-scale industrial application, ductile iron pipes are a proven and trusted choice that delivers exceptional performance and long-term value.
| High-quality Ductile iron Pipe Parameters. |
| Specification |
K7 Wall Thickness/mm |
K8 Wall Thickness/mm |
K9 Wall Thickness/mm |
Theoretical Weight/Ton |
| Nominal Wall Thickness |
Minimum Wall Thickness |
Nominal Wall Thickness |
Minimum Wall Thickness |
Nominal Wall Thickness |
Minimum Wall Thickness |
| DN80 |
/ |
/ |
/ |
/ |
6 |
4.7 |
0.077 |
| DN100 |
4.2 |
2.9 |
4.8 |
3.5 |
6 |
4.7 |
0.095 |
| DN150 |
4.55 |
3.25 |
5.2 |
3.9 |
6 |
4.7 |
0.144 |
| DN200 |
4.9 |
3.6 |
6.5 |
4.3 |
6.3 |
4.8 |
0.194 |
| DN250 |
5.25 |
3.95 |
6 |
4.7 |
6.8 |
5.25 |
0.255 |
| DN300 |
5.6 |
4.3 |
6.4 |
4.8 |
7.2 |
5.6 |
0.323 |
| DN350 |
5.95 |
4.65 |
6.8 |
5.15 |
7.7 |
6.05 |
0.403 |
| DN400 |
6.3 |
4.6 |
7.2 |
5.5 |
8.1 |
6.4 |
0.482 |
| DN450 |
6.65 |
4.9 |
7.6 |
5.85 |
8.6 |
6.85 |
0.577 |
| DN500 |
7 |
5.2 |
8 |
6.2 |
9 |
7.2 |
0.669 |
| DN600 |
7.7 |
5.8 |
8.8 |
6.9 |
9.9 |
8 |
0.882 |
| DN700 |
8.4 |
6.4 |
9.4 |
7.6 |
10.8 |
8.8 |
1.123 |
| DN800 |
9.1 |
7 |
10.4 |
8.3 |
11.7 |
9.6 |
1.394 |
| DN900 |
/ |
/ |
11.2 |
9 |
12.6 |
10.4 |
1.691 |
| DN1000 |
/ |
/ |
12 |
9.7 |
13.5 |
11.2 |
2.017 |
| DN1200 |
/ |
/ |
13.6 |
11.1 |
15.3 |
12.8 |
2.758 |
| DN1400 |
/ |
/ |
15.2 |
12.5 |
17.1 |
14.4 |
3.669 |
| DN1500 |
/ |
/ |
16 |
13.2 |
18 |
15.2 |
4.175 |
| DN1600 |
/ |
/ |
16.8 |
13.9 |
18.9 |
16 |
4.668 |
| DN1800 |
/ |
/ |
18.4 |
15.3 |
20.7 |
17.6 |
5.803 |
| DN2000 |
/ |
/ |
20 |
16.7 |
22.5 |
19.2 |
7.043 |
| DN2200 |
/ |
/ |
21.6 |
18.1 |
24.3 |
20.8 |
8.332 |
| DN2400 |
/ |
/ |
23.2 |
20.3 |
26.1 |
22.4 |
9.822 |
| DN2600 |
/ |
/ |
24.8 |
20.9 |
27.9 |
24 |
11.392 |
| K7, K8, and K9 are all calculated based on the same theoretical weight. |
| Pressure - Bearing Performance Parameters of Ductile Iron Pipes |
| DN |
DE(mm) |
Pressure Rating |
Radial Rigidity
(KN/M²) |
Nominal Wall Thickness
(mm) |
PFA
MPA |
PAM
MPA |
PEA
MPA |
| DN80 |
98 |
C40 |
856 |
4.4 |
4.0 |
4.8 |
5.3 |
| DN100 |
118 |
C40 |
481 |
4.4 |
4.0 |
4.8 |
5.3 |
| DN125 |
144 |
C40 |
271 |
4.5 |
4.0 |
4.8 |
5.3 |
| DN150 |
170 |
C40 |
163 |
4.5 |
4.0 |
4.8 |
5.3 |
| DN200 |
222 |
C40 |
84 |
4.7 |
4.0 |
4.8 |
5.3 |
| DN250 |
176 |
C30 |
52 |
4.9b |
3.0 |
3.6 |
4.1 |
| DN300 |
326 |
C30 |
34 |
5.1 |
3.0 |
3.6 |
4.1 |
| DN350 |
378 |
C30 |
44 |
6.3b |
3.0 |
3.6 |
4.1 |
| DN400 |
429 |
C25 |
34 |
6.5b |
3.0 |
3.6 |
4.1 |
| DN450 |
480 |
C25 |
23 |
6.5b |
2.5 |
3.0 |
3.5 |
| DN500 |
532 |
C25 |
17 |
6.5 |
2.5 |
3.0 |
3.5 |
| DN600 |
635 |
C25 |
17 |
7.6b |
2.5 |
3.0 |
3.5 |
| DN700 |
738 |
C25 |
17 |
8.8b |
2.5 |
3.0 |
3.5 |
| DN800 |
842 |
C25 |
15 |
9.6 |
2.5 |
3.0 |
3.5 |
| DN900 |
945 |
C25 |
15 |
10.6 |
2.5 |
3.0 |
3.5 |
| DN1000 |
1048 |
C25 |
14 |
11.6 |
2.5 |
3.0 |
3.5 |
| DN1100 |
1152 |
C25 |
14 |
12.6 |
2.5 |
3.0 |
3.5 |
| DN1200 |
1255 |
C25 |
14 |
13.6 |
2.5 |
3.0 |
3.5 |
| DN1400 |
1462 |
C25 |
14 |
15.7 |
2.5 |
3.0 |
3.5 |
| DN1500 |
1565 |
C25 |
14 |
16.7 |
2.5 |
3.0 |
3.5 |
| DN1600 |
1668 |
C25 |
13 |
17.7 |
2.5 |
3.0 |
3.5 |
| DN1800 |
1785 |
C25 |
13 |
19.7 |
2.5 |
3.0 |
3.5 |
| DN2000 |
2082 |
C25 |
13 |
21.8 |
2.5 |
3.0 |
3.5 |
| DN2200 |
2288 |
C25 |
13 |
23.8 |
2.5 |
3.0 |
3.5 |
| DN2400 |
2495 |
C25 |
13 |
25.8 |
2.5 |
3.0 |
3.5 |
| DN2600 |
2702 |
C25 |
13 |
27.9 |
2.5 |
3.0 |
3.5 |
| DN2800 |
2908 |
C25 |
13 |
29.9 |
2.5 |
3.0 |
3.5 |
| DN3000 |
3115 |
C25 |
13 |
31.9 |
2.5 |
3.0 |
3.5 |
Q1: Are you trading company or manufacturer ?
A1: We are factory.
Q2:Can I go to your factory to visit?
A2:Of course, we welcome customers from all over the world to visit our factory.
Q3: How long is your delivery time?
A3: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to
quantity.
Q4:What is the advantage about your company?
A4:Our company has professional team and professional production line.
Q5: The logo and the color can be customized?
A5: Yes, we welcome you to sample custom
Q6: Any other good service your company can provide?
A6:Yes,we can provide good after-sale and fast delivery.
Q7:What product information do I need to provide?
A7:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.
Q8:Does the product have quality inspection before loading?
A8:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept the third party inspection absolutely.
Factory Introduction
We are a specialized ductile iron pipe manufacturing factory based in Shanxi, China. With a rich heritage of over 20 years in this industry, we have established ourselves as a reliable and experienced player in the global market.
Our ductile iron pipes have found their way to numerous countries across the globe. This wide - reaching export network is a testament to the trust that our international customers place in our products. The quality of our pipes has been recognized and praised by various sectors. We adhere to strict international quality standards, and our production facilities are equipped with state - of - the - art technology to ensure precision and consistency.
Each batch of our products undergoes rigorous quality control checks. We conduct comprehensive tests on factors such as pipe strength, pressure - bearing capacity, and corrosion resistance. This meticulous approach to quality control has earned us a reputation for delivering products that are not only durable but also perform optimally in diverse applications, whether it's for water supply, gas transmission, or other infrastructure projects.
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