The low temperature resistance of HDPE pipe (high-density polyethylene pipe) is excellent, which is one of the key advantages of its wide application in cold areas. The following is a specific analysis:
Minimum tolerance temperature:
HDPE pipe can still maintain flexibility and impact resistance in extremely cold environments of -40℃ to -60℃, and will not become brittle and crack.
(Comparison: PVC pipes become brittle below 0℃, and steel pipes lose toughness below -20℃)
Low temperature impact resistance:
At -40℃, the impact strength of HDPE can still reach more than 60% of that at room temperature, which is much higher than other plastic pipes (such as PPR, PVC).
Anti-frost expansion ability:
Due to the flexibility of HDPE, the pipe can withstand the volume expansion (about 9%) when the internal water freezes, reducing the risk of freezing and cracking.
Performance Indicator | HDPE Pipe | PVC Pipe | Steel Pipe |
Minimum Service Temperature | -40℃ to -60℃ | 0℃ to 5℃ | -20℃ to -30℃ |
Low-Temperature Brittleness | None | Highly Prone to Cracking | Reduced Toughness |
Frost Heave Resistance | Can Buffer Through Deformation | Direct Fracture | Potential Weld Cracking |
Molecular structure characteristics:
The linear molecular chain structure of HDPE can still maintain flexibility at low temperatures and is not prone to glass transition (Tg as low as -120℃).
Additive enhancement:
High-quality HDPE pipes will add low temperature modifiers (such as elastomers) to further improve impact resistance in cold environments.
Projects within the Arctic Circle: Alaska oil pipelines use HDPE pipes to withstand extreme climates of -50℃.
Rural water supply in northern China: HDPE pipes are promoted in Heilongjiang, Inner Mongolia and other places to solve the problem of traditional pipes freezing and cracking in winter.
Alpine ski field irrigation: HDPE pipes are used as snowmaking system pipes in the Swiss Alps.
Material selection recommendations:
Choose HDPE pipes made of PE100 grade raw materials (more resistant to low temperatures than PE80)
Confirm that the product has passed the ISO 9080 low temperature weathering test
Installation points:
The burial depth should be lower than the local permafrost layer (for example, ≥1.5 meters is recommended in northern China)
Use electric fusion connection (more suitable for low temperature construction than hot fusion)
Maintenance management:
It is recommended to drain the pipe when it is not used in winter
Exposure pipes can be coated with insulation materials (such as PEF foam)
HDPE pipe is one of the pipes with the best low temperature resistance at present, and is particularly suitable for water supply and gas transportation in high-cold areas. It has become the preferred solution for infrastructure construction in cold areas with its advantages of anti-frost heave, corrosion resistance and long life.
Official website: www.phtopindustry.com | www.pefitting.net
Contact us: Email:inquiry@phtopindustry.com | Whatsapp:+86 15093100892
Company address: Room 802, 8th Floor, Building 5, Jinyin Modern City, Jinshui District, Zhengzhou City, Henan Province, China
High-density polyethylene (HDPE) pipes are widely used in water supply, drainage, natural gas transmission, industrial pipelines and other fields due to their excellent corrosion resistance, high strength and long life. As a leading company in the HDPE pipe industry, Puhui Industry provides HDPE pipes in a variety of sizes and specifications to meet the needs of different application scenarios. This article will introduce the size range, specification standards and applications of Puhui Industry HDPE pipes in detail.
Puhui Industry's HDPE pipes cover a variety of sizes from small to large diameters, which can meet a wide range of needs from household water supply to industrial water delivery. The following are common size ranges:
1. Small diameter pipes
Outer diameter range: 20 mm - 63 mm
Application scenarios: household water supply, agricultural irrigation, small drainage systems.
2. Medium diameter pipes
Outer diameter range: 75 mm - 315 mm
Application scenarios: urban water supply, municipal drainage, industrial water.
3. Large diameter pipes
Outer diameter range: 355 mm - 1200 mm
Application scenarios: large water supply projects, sewage treatment, natural gas transmission.
4. Extra large diameter pipes
Outer diameter range: 1200 mm or more (customizable according to customer needs)
Application scenarios: large infrastructure projects, marine engineering, mining drainage.
1. Pressure rating (PN)
The pressure rating of HDPE pipes indicates the maximum working pressure they can withstand. Common pressure ratings include:
PN6: Applicable to low-pressure water supply systems.
PN8: Applicable to medium-pressure water supply systems.
PN10: Applicable to high-pressure water supply systems.
PN12.5 and above: Applicable to ultra-high-pressure water supply or natural gas transmission systems.
2. Standard dimension ratio (SDR)
SDR is the ratio of the outer diameter of the pipe to the wall thickness, which is used to indicate the strength and pressure resistance of the pipe. Common SDR values include:
SDR11: High strength, suitable for high-pressure applications.
SDR17: Medium strength, suitable for medium-pressure applications.
SDR26: Low strength, suitable for low-pressure applications.
3. Material grade
Puhui Industry's HDPE pipes are made of high-quality polyethylene materials, and common material grades include:
PE80: Has high strength and pressure resistance, suitable for general water supply systems.
PE100: has higher strength and pressure resistance, suitable for high-pressure water supply, natural gas transmission and industrial pipelines.
4. Color identification
For easy identification and application, Puhui Industry's HDPE pipes are color-coded:
Blue: for drinking water systems.
Yellow: for natural gas transmission systems.
Black: for drainage and industrial piping systems.
parameter | Value/Range |
Outer diameter range | 20 mm - 1200 mm (larger sizes available on request) |
Pressure level (PN) | PN6 - PN25 |
Standard Size Ratio (SDR) | SDR11 - SDR26 |
Material Grade | PE80、PE100 |
Operating temperature range | -50°C to 60°C |
Service life | More than 50 years |
1. Water supply system
Household water supply, urban water supply, agricultural irrigation.
2. Drainage system
Municipal drainage, sewage treatment, rainwater discharge.
3. Natural gas transmission
Urban gas pipeline network, industrial gas transmission.
4. Industrial pipeline
Chemical plant, power plant, mining drainage.
5. Marine engineering
Seawater desalination, offshore platform water supply.
6. Infrastructure
Tunnel drainage, bridge water supply.
1. High standard production
Puhui Industry's HDPE pipes are produced in strict accordance with international and industry standards such as ISO 4427, ASTM F714, GB/T 13663.
2. Customized service
According to customer needs, provide HDPE pipes with customized sizes, colors and specifications.
3. Global certification
The products have passed international authoritative certifications such as ISO 9001, ISO 14001, FM certification, etc. to ensure quality and safety.
4. Technical support
Provide customers with comprehensive technical support and installation guidance to ensure the best performance of the pipeline system.
Puhui Industry's HDPE pipes have become the first choice for global customers with their diverse sizes, strict specifications and excellent performance. Whether it is water supply, drainage, natural gas transmission or industrial applications, Puhui Industry can provide high-quality solutions to meet the diverse needs of customers.
Official website: www.phtopindustry.com | www.pefitting.net
Contact us: Email:inquiry@phtopindustry.com | Whatsapp:+86 15093100892
Company address: Room 802, 8th Floor, Building 5, Jinyin Modern City, Jinshui District, Zhengzhou City, Henan Province, China
In the field of engineering materials, the emergence of high-density polyethylene (HDPE) pipes marks a major breakthrough in pipeline technology. This thermoplastic pipe, produced by an advanced polymerization process, is reshaping the global pipeline industry with its superior performance and significant economic benefits. From municipal water supply and drainage to industrial transportation, from agricultural irrigation to Marine engineering, HDPE pipeline has become the first choice for modern engineering construction with its unique advantages.
The most notable feature of HDPE pipes is their excellent corrosion resistance. It can resist the erosion of various acids, alkalis, salts and other chemical substances, completely solving the problem of easy corrosion of metal pipes. In chemical parks, the service life of HDPE pipes can reach more than 50 years, which is 3-5 times that of traditional steel pipes.
The excellent flexibility and impact resistance enable HDPE pipes to adapt to complex geological conditions. Its elongation at break exceeds 350%, which can withstand a certain degree of foundation settlement and earthquake deformation, and is particularly suitable for geologically unstable areas.
In terms of fluid transportation, HDPE pipes have a smooth inner wall, a small friction coefficient, and excellent hydraulic properties. Compared with metal pipes of the same specifications, it can reduce 20%-30% of the transportation energy consumption and significantly reduce operating costs.
In the field of municipal engineering, HDPE pipes are rapidly replacing traditional pipes. Its excellent sealing performance and convenient hot-melt connection method reduce the leakage rate of the pipe network to less than 1%, greatly improving the utilization rate of water resources.
In industrial applications, HDPE pipes show excellent adaptability. From mine tailings transportation to chemical medium transportation, from food grade transportation to gas transportation, HDPE pipes can provide safe and reliable solutions. After a large chemical company adopted HDPE pipes, the annual maintenance cost was reduced by more than 60%.
In the field of agricultural irrigation, the weather resistance and UV resistance of HDPE pipes are fully utilized. Its service life can reach more than 20 years, which is 2-3 times that of traditional PVC pipes, providing reliable guarantee for the development of modern agriculture.
The initial investment of HDPE pipes may be slightly higher than that of traditional pipes, but its cost advantage over the entire life cycle is obvious. The ultra-long service life and extremely low maintenance cost can reduce the comprehensive cost by 30%-50%.
Easy installation is another major advantage of HDPE pipes. Its light weight and convenient connection can greatly shorten the construction period and reduce construction costs. After a municipal project adopted HDPE pipes, the construction efficiency increased by more than 40%.
In terms of environmental benefits, HDPE pipes can be 100% recycled and meet the requirements of sustainable development. Its production process has low energy consumption and carbon emissions are only 1/3 of steel pipes, providing an ideal choice for green engineering construction.
HDPE pipes are leading the technological innovation of the pipeline industry with their excellent performance and significant application advantages. It not only solves many problems in traditional pipeline engineering, but also provides reliable, economical and environmentally friendly solutions for modern engineering construction. With the continuous advancement of material technology and the continuous expansion of application fields, HDPE pipes will surely play a more important role in future engineering construction and make greater contributions to the sustainable development of human society.
Official website: www.phtopindustry.com | www.pefitting.net
Contact us: Email:inquiry@phtopindustry.com | Whatsapp:+86 15093100892
Company address: Room 802, 8th Floor, Building 5, Jinyin Modern City, Jinshui District, Zhengzhou City, Henan Province, China
In modern pipeline engineering, choosing the right pipe is crucial. HDPE (high-density polyethylene) pipes and fittings have become the first choice for pipeline systems in municipal, industrial, agricultural and other fields due to their excellent performance, environmental protection characteristics and economic benefits. Whether it is water supply and drainage, gas transmission, or power communication sheathing, HDPE pipes can provide reliable and durable solutions.
1. Strong corrosion resistance and long service life
HDPE material itself is resistant to chemical corrosion and will not be damaged by acid, alkali, salt or impurities in groundwater. Its service life can reach more than 50 years, far exceeding traditional metal pipes.
2. Good flexibility and strong earthquake resistance
Compared with rigid pipes, HDPE pipes are more flexible and can withstand foundation settlement and earthquakes. They are particularly suitable for areas with complex geology, such as mountainous areas or seismic zones.
3. Reliable connection and no leakage
HDPE pipes are mainly connected by hot melt or electric fusion to ensure that the interface strength is higher than the pipe itself, avoiding leakage caused by interface problems, and are particularly suitable for water supply and gas transportation.
4. Smooth inner wall and low water flow resistance
The inner wall of HDPE pipe is smooth and scale-free, with low fluid resistance, which reduces energy consumption by more than 30% compared with traditional pipes and effectively improves transportation efficiency.
5. Convenient construction and low comprehensive cost
HDPE pipes are light in weight and easy to carry. They can be quickly installed by hot melt butt, electric fusion connection, flange connection, etc., reducing construction time and labor costs, and the comprehensive cost is more advantageous.
6. Green and environmentally friendly, recyclable
HDPE materials are recyclable and contain no harmful substances. They are environmentally friendly during production and use, and conform to the concept of modern green and sustainable development.
1. Municipal engineering
Urban water supply network
Sewage and rainwater pipelines
Gas pipelines
2. Industrial field
Chemical fluid transportation
Mine mud transportation
Marine aquaculture pipelines
3. Agricultural and garden irrigation
Farmland drip irrigation and sprinkler irrigation system
Water channel network transformation
4. Power communication protection
Cable protection pipe
Communication optical cable sheath pipe
✅ High-quality raw materials: international standard HDPE raw materials are used to ensure the durability and safety of the products.
✅ Strict quality control: the production process complies with ISO, GB and other standards to ensure that each pipe meets high quality requirements.
✅ Customized service: HDPE pipes and fittings of different specifications, colors and pressure levels can be provided according to customer needs.
✅ Perfect after-sales support: technical guidance, construction training and after-sales maintenance are provided to ensure worry-free use for customers.
HDPE pipes and fittings are gradually replacing traditional pipeline materials with their excellent performance, wide application and environmental protection characteristics, and have become a high-quality choice for pipeline projects in various industries. If you are looking for durable, safe and economical pipeline solutions, please contact us for more product details!
Official website: www.phtopindustry.com | www.pefitting.net
Contact us: Email:inquiry@phtopindustry.com | Whatsapp:+86 15093100892
Company address: Room 802, 8th Floor, Building 5, Jinyin Modern City, Jinshui District, Zhengzhou City, Henan Province, China
In modern water infrastructure construction, HDPE (high-density polyethylene) water pipes are becoming the first choice for more and more cities and companies. HDPE water pipes have been widely used in various water conservancy, water supply, drainage and irrigation systems due to their excellent performance, cost-effectiveness and environmental advantages. This article will explore the advantages of HDPE water pipes and introduce their applications in water projects.
One of the biggest advantages of HDPE water pipes is its excellent corrosion resistance. Traditional metal water pipes are easily corroded by chemicals, salts or acids and alkalis in water, causing corrosion, leakage and even rupture of pipes. HDPE materials have very strong chemical stability and are not easily corroded by chemicals in water, which can ensure long-term service life and reduce maintenance costs.
HDPE water pipes are usually designed to last 50 years or more. Even in extreme climate conditions, they can maintain their strength and stability. This means that once installed, users do not need to frequently replace pipes, which greatly reduces long-term water infrastructure investment.
HDPE water pipes have strong resistance to external damage and can effectively resist the influence of external factors such as ground subsidence, impact and pressure changes. Its flexibility also allows it to easily cope with various complex terrains and environmental conditions during construction, and is suitable for different types of construction projects.
HDPE water pipes not only save effort and time during transportation and installation, but also have a more environmentally friendly production process. The HDPE material itself is recyclable, reducing the burden on the environment. In addition, due to the smooth inner wall of the HDPE water pipe, it helps the efficient transmission of water flow, reduces water flow friction, and saves energy consumption.
Due to the advantages of HDPE water pipes such as corrosion resistance, wear resistance, and UV resistance, they require almost no maintenance during long-term use. Traditional pipes often require regular inspection and repair due to corrosion, leakage and other problems, while the low maintenance of HDPE water pipes greatly saves time and money.
HDPE water pipes have been widely used in various water projects, including municipal water supply, sewage discharge, irrigation systems, industrial water, mining, agriculture and other fields. In many areas, HDPE water pipes have become the preferred material for improving water supply systems, ensuring water quality safety and improving water resource utilization efficiency.
HDPE water pipes are very simple to install and can be connected by welding, ensuring the stability and sealing of pipe connections. This connection method not only effectively avoids the cracks or looseness that may occur during welding of traditional metal pipes, but also makes the installation process more efficient, saving time and manpower.
Although the initial investment of HDPE water pipes may be slightly higher than traditional materials, its long-term durability and low maintenance cost effectively control the total cost. Especially in large-scale infrastructure projects, the use of HDPE water pipes can significantly reduce long-term operating costs.
With the increasingly stringent requirements for environmental protection and sustainable development, HDPE water pipes have become an ideal choice for modern water conservancy projects due to their durability, environmental protection and cost-effectiveness. Whether it is urban water supply or agricultural irrigation, HDPE water pipes can provide strong support for building safer, more economical and environmentally friendly infrastructure. Choosing HDPE water pipes is a wise move towards the future of smart water conservancy.
Official website: www.phtopindustry.com | www.pefitting.net
Contact us: Email:inquiry@phtopindustry.com | Whatsapp:+86 15093100892
Company address: Room 802, 8th Floor, Building 5, Jinyin Modern City, Jinshui District, Zhengzhou City, Henan Province, China