The gas pipeline is one of the most important components of the pipeline network in a city. The gas itself has certain dangers. If there is a leakage, it is easy to cause great harm, so the safety of HDPE gas pipes is very important. The replacement of the pipe network is also a very troublesome project. Excellent HDPE gas pipes have a service life of 2-3 times that of traditional pipes, up to 50 years. They have good properties, low installation costs and strong safety, so HDPE pipes are ideally used for gas transmission.
HDPE is the ideal natural gas pipe material for use in distribution systems:
● Leak-free joints. The HDPE gas pipes will be connected by fusion welding, the joints are strong, and no leak will occur during its service;
● Longer service life. The HDPE gas pipes will use PE4710 grade, which has better performance. This higher tensile strength, combined with its superior durability, enables a longer design life than other piping materials.
● Excellent durability. The HDPE natural gas pipe resists damage and degradation from a variety of operating and environmental conditions. It also has excellent corrosion resistance to many chemicals and solvents.
● Light Weight. The density of HDPE natural gas pipe is 0.94g/cm3, only 1/8 of steel pipes, so the HDPE gas pipe is safer to handle, and easier to load, transport, and position, which further reduces installation costs.
● Long laying lengths. HDPE natural gas pipes can offer long lengths of coils, which reduces the potential for leakage and reduce the labor and material costs for installation, largely saving costs.
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|
Nominal Diameter |
Thickness（mm） |
|
|
|
SDR11 |
SDR17.6 |
|
20 |
2.3 |
2.3 |
|
25 |
2.3 |
2.3 |
|
32 |
3 |
2.3 |
|
40 |
3.7 |
2.3 |
|
50 |
4.6 |
2.9 |
|
63 |
5.8 |
3.6 |
|
75 |
6.8 |
4.3 |
|
90 |
8.2 |
5.2 |
|
110 |
10 |
6.3 |
|
160 |
14.6 |
9.1 |
|
200 |
18.2 |
11.4 |
|
250 |
22.7 |
14.2 |
|
315 |
28.6 |
17.9 |
|
400 |
36.3 |
22.7 |
|
500 |
45.4 |
28.4 |
|
630 |
57.2 |
35.7 |
Available Color: Yellow, Black, or black with red or yellow strips
High-density polyethylene (HDPE) pipes have been used for natural gas distribution since the mid-1960s. The first HDPE gas distribution lines were installed in the United States in 1968.
The development of HDPE natural gas pipes was driven by the need for a more durable and cost-effective alternative to traditional materials such as steel and cast iron. HDPE pipes are lightweight, flexible, and resistant to corrosion and abrasion, making them an ideal choice for natural gas distribution.
In the early years, HDPE gas pipes were typically made using a process called "extrusion," which involved melting the plastic and pushing it through a die to create the desired shape. This process was later refined with the introduction of "butt fusion," which allowed for more precise and reliable joining of sections of HDPE pipe.
Over time, advances in manufacturing technology and materials science have led to further improvements in the performance and durability of HDPE natural gas pipes. For example, the introduction of bimodal polyethylene resins has allowed for the production of pipes with higher strength and stiffness.
Today, HDPE natural gas pipes are widely used throughout the world for both residential and commercial applications. They are commonly used for distribution and transmission pipelines, service lines, and meter risers. The use of HDPE pipes for natural gas distribution is expected to continue to grow in the coming years as new technologies and materials are developed.
HDPE (High-Density Polyethylene) pipes are used for different applications, and the main difference between an HDPE water pipe and an HDPE gas pipe is the composition of the material used to manufacture them and the standards that they meet.
The primary difference between the two pipes is their intended use. HDPE water pipes are designed and manufactured for the transportation of potable water, which means they are suitable for use in conveying water that is safe for human consumption. On the other hand, HDPE gas pipes are designed and manufactured for the transportation of natural gas and other gases, which means they must be able to withstand high pressure and be resistant to corrosion.
The material composition of the pipes is also different. HDPE water pipes are typically made from virgin resin material, while HDPE gas pipes are usually made from a blend of virgin and recycled resin materials. This is because the gas industry requires a higher level of UV stabilization and a higher level of antioxidant protection due to the harsh environments that gas pipes operate.
The high-density polyethylene water supply pipe should meet the requirements of GB/T13663/ISO4407; the high-density polyethylene gas pipe should meet the requirements of GB15558/.
The specifications, dimensions, and performance of HDPE water supply pipes were produced to comply with GB/T13663-2000 and GB/T13663.2-2005. The sanitary performance complies with GB/T17219 and the relevant sanitation and safety evaluation regulations of the Ministry of Health.
The high-density polyethylene gas pipeline produced by Pioneer Pipe Industry adopts the standard iso4437:1997. All standards meet the requirements of GB15558.1-2003 and GB15558.2-2005.
HDPE water pipes must meet the standards set by the NSF (National Sanitation Foundation) for use in potable water applications, while HDPE gas pipes must meet the standards set by the ASTM (American Society for Testing and Materials) for gas pipe applications.
