HDPE pipe and fitting,PVC pipe and fitting

With the continuous development of construction engineering and home decoration industries, the selection of pipe materials has become an important issue of concern to users. Especially in water supply systems, HDPE (high-density polyethylene) pipes and PPR (random copolymer polypropylene) pipes are widely used due to their good performance. But which pipe is more suitable for water supply? Recently, many industry experts have conducted in-depth analysis on this topic.

According to experts, HDPE pipes have been widely used in municipal water supply, underground pipe networks, and large-scale construction projects due to their excellent flexibility, corrosion resistance and ultra-long service life. HDPE pipes have excellent impact resistance and resistance to geological settlement. They can achieve overall system leakage-free through hot-melt connection and are considered to be one of the safest and most reliable water supply solutions at present.

In contrast, PPR pipes are mainly used in hot and cold water pipe systems in buildings. PPR pipes are light in material, simple to construct, and have good high temperature resistance. They are suitable for water supply and heating systems in home decoration. Because its connection method also uses hot-melt technology, it can ensure that the interface is firm and not easy to leak, so it has a wide market in residential areas and office buildings. Internal water supply systems.

 

In the performance comparison, HDPE pipes show stronger comprehensive advantages. First, HDPE pipes are far more resistant to low-temperature impact than PPR, and can maintain good toughness even in cold environments. Second, HDPE pipes are more resistant to ultraviolet rays and are suitable for outdoor laying. Most importantly, HDPE pipes have a wider range of sizes and specifications, which can meet the needs of water supply projects of different sizes.

However, experts also pointed out that the high temperature tolerance of PPR pipes is excellent in daily household water use (especially hot water systems), and is more economical and practical in small-diameter water supply applications. Therefore, when selecting materials, comprehensive considerations should be made based on the actual application environment, operating temperature, construction conditions and budget.

An engineer from the China Academy of Building Research said: "If it is indoor water supply, especially inside residential buildings, PPR pipes are very cost-effective, easy to install and have low maintenance costs. If it is municipal water supply, long-distance water delivery or occasions with high weather resistance requirements, HDPE pipes are a better choice."

At present, many pipeline manufacturers are also constantly innovating material technology and launching a variety of specifications and composite products to meet the needs of different application scenarios. Industry insiders remind consumers and project parties that when choosing pipes, they should choose products that meet national standards and be installed by professional construction teams to ensure the safety and stability of the water supply system.

In the future, as urban infrastructure construction and smart home development put forward higher requirements for water systems, the application of HDPE pipes and PPR pipes in their respective fields will continue to expand, and how to accurately select materials according to demand will become an important part of ensuring water safety.

Official website: www.phtopindustry.com | www.phpipes.com
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

HDPE and PVC have their own advantages in durability, depending on the use environment and application requirements. The following is a comparative analysis of the two:

Material properties and durability

HDPE pipe (high-density polyethylene) has higher flexibility and impact resistance, especially in low-temperature environments (can withstand -60°C to 60°C), and is not easy to crack.

PVC pipe (polyvinyl chloride) has higher hardness, but is more brittle and may crack at low temperatures or when impacted by external forces.

Chemical corrosion resistance

HDPE pipe has stronger resistance to most acids, alkalis and chemicals, and is suitable for corrosive environments such as chemical industry and wastewater treatment.

PVC pipe has good acid and alkali resistance, but may deteriorate in strong oxidizing acids (such as concentrated sulfuric acid) or organic solvent environments.

 

Wear resistance and service life

The wear resistance of HDPE pipe is 4 times that of steel pipe. It is suitable for high wear scenarios such as mud transportation, and the theoretical service life can reach more than 50 years.

PVC pipe has better wear resistance, but not as good as HDPE. The service life is usually about 50 years, but it is more susceptible to ultraviolet rays.

 

Temperature resistance

HDPE pipe can withstand high temperatures of 95°C for a long time and 110°C for a short time, which is suitable for hot water transportation.

PVC pipe has poor temperature resistance and is generally only suitable for environments below 60°C. It is easy to soften and deform at high temperatures.

 

Installation and maintenance

HDPE pipe adopts hot melt connection, with high joint strength and good seismic resistance, which is suitable for underground or complex terrain laying.

PVC pipe adopts adhesive or threaded connection, which is easy to install, but the joint may become a weak point.

 

HDPE pipe has stronger comprehensive durability, especially suitable for low temperature, high corrosion, high wear and scenes requiring flexibility (such as underground pipelines and chemical transportation). PVC pipes are economical and suitable for water supply and drainage at room temperature and low pressure, wire protection and other applications, but they are not as durable as HDPE in extreme environments.

 

Recommended choice:

If you need long-term durability, impact resistance, and chemical corrosion resistance, choose HDPE pipes.

If the budget is limited and it is used for ordinary water supply and drainage, PVC pipes are still a good choice.

Official website: www.phtopindustry.com | www.phpipes.com
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 many fields such as modern infrastructure construction, agricultural irrigation, municipal drainage and industrial transportation, high-density polyethylene pipe (HDPE pipe) has become a popular choice in the market due to its excellent corrosion resistance, flexibility and ultra-long service life. Among the many HDPE pipe suppliers, Puhui Industry, as a well-known manufacturer in the industry, has won the unanimous trust of global customers by providing customers with high-quality, cost-effective HDPE pipe products with its strong production strength and direct sales model.

Factory direct sales, more advantageous prices

Puhui Industry adopts the factory direct sales model to effectively reduce the cost of intermediate links, allowing customers to obtain high-quality products at a more competitive price. Whether it is engineering project procurement or bulk wholesale cooperation, Puhui can provide customized price plans according to customer needs, greatly improve procurement efficiency and reduce overall costs.

High-quality raw materials to ensure product performance

All HDPE pipes of Puhui Industry are made of PE100 grade raw materials and are produced in strict accordance with ISO, GB and other domestic and international standards. The product has excellent tensile strength, wear resistance and impact resistance, with a service life of more than 50 years. It is widely used in water supply, drainage, gas, electricity, communications, mining and other scenarios.

 

A variety of specifications to meet different needs

Puhui can provide HDPE pipes and fittings with various diameters from 20mm to 1600mm, and support customers to customize products with different colors, wall thicknesses and pressure levels. Whether it is a small agricultural drip irrigation system or a large-scale municipal engineering pipeline laying, Puhui can respond quickly and provide a one-stop solution.

 

Strict quality control, export quality assurance

As an international enterprise, Puhui Industry has advanced production equipment and a complete quality management system, and its products are exported to many countries and regions such as Southeast Asia, the Middle East, Africa, and South America. Each batch of products shipped from the factory has been strictly tested to ensure stable operation under different climates and construction environments.

 

Fast delivery and efficient service

Puhui has multiple modern storage bases and an efficient logistics system to ensure fast delivery and timely delivery. At the same time, the company is equipped with an experienced pre-sales and after-sales technical team to provide customers with full-process service support from product selection, installation guidance to after-sales maintenance.

Choosing Puhui Industry means choosing the dual guarantee of quality and efficiency. If you are looking for a trustworthy HDPE pipe manufacturer, welcome to contact Puhui to enjoy the price advantage and professional service of factory direct sales and create a bright future of win-win cooperation!

Official website: www.phtopindustry.com | www.phpipes.com
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

 

Puhui Industry is a well-known manufacturer of high-density polyethylene (HDPE) pipes in China. Its products are widely used in municipal water supply, agricultural irrigation, mining transportation and other fields. ?HDPE pipes have become an ideal choice for modern infrastructure construction due to their corrosion resistance, long life and diverse connection methods.

 

Puhui Industry HDPE pipe price reference

Puhui Industry provides a variety of HDPE pipes, and the price varies depending on factors such as pipe diameter, pressure level, and wall thickness. The following are reference prices for some products:

75mm diameter HDPE pipe: The price is about $0.20 to $2.10 per meter, suitable for water supply, gas transportation, mining and other fields.

300mm diameter HDPE pipe:

Ordinary type (low pressure level, thin wall): about 200 to 300 yuan per meter.

Medium type (medium pressure level, standard wall thickness): about 300 to 400 yuan per meter.

900mm diameter HDPE pipe: The price is about $0.40/meter, suitable for large water conservancy projects and municipal projects.

1400mm to 1600mm diameter HDPE pipe: The price is about $0.36/meter, suitable for extra-large engineering projects.

 

Main factors affecting the price

The price of HDPE pipes is affected by many factors, including:

Diameter and wall thickness: The larger the diameter and the thicker the wall, the more raw materials are required, and the price increases accordingly.

Pressure rating (SDR): The higher the pressure rating, the greater the internal pressure the pipe needs to withstand, and the manufacturing cost increases accordingly. Raw material cost: The fluctuation of HDPE raw material price directly affects the price of the final product.

Production process and certification: Products that use advanced production technology and obtain international certifications (such as ISO, CE, WRAS, ROHS) have more guaranteed quality and relatively higher prices.

Transportation and tariffs: For export products, transportation costs and import tariffs will also have an impact on prices.

 

How to get an accurate quotation

Due to the variety of specifications of HDPE pipes, it is recommended that you contact us directly to obtain a detailed quotation before purchasing. You can contact us in the following ways:

Official website: www.phtopindustry.com

Email: inquiry@phtopindustry.com

WhatsApp: +86 15093100892

Provide your specific needs (such as pipe diameter, pressure level, application scenario, etc.) so that we can provide you with the most suitable products and quotations.

Puhui Industry is committed to providing high-quality HDPE pipes and accessories to customers around the world. With its rich production experience and strict quality control, it has won wide market recognition. Whether it is municipal engineering, agricultural irrigation or industrial transportation, Puhui"s products are a trustworthy choice.

In modern pipeline engineering, the connection between HDPE (high-density polyethylene) pipes and steel pipes is a common technical requirement. Due to the significant differences in the properties of the two materials, how to achieve a safe and reliable connection has become the key point in the implementation of the project. This article will systematically introduce the connection methods, technical points and precautions of HDPE pipes and steel pipes.

 

Main methods for connecting HDPE pipes to steel pipes

1. Flange connection method

Working principle:

Welding PE flange joints at the end of HDPE pipes

Welding steel flanges at the end of steel pipes

Connection is achieved by bolting

Implementation steps:

Hot-melt connection of HDPE pipe ends to PE flanges

Welding matching steel flanges at the end of steel pipes

Installing sealing gaskets between the two flanges

Tightening bolts evenly and symmetrically

Advantages:

Reliable connection, strong pressure bearing capacity

Convenient for later maintenance and disassembly

Wide application range (commonly used for pressure pipes)

2. Socket and spigot connection method

Working principle:

Using steel conversion joints

One end is designed as a socket to connect HDPE pipes

The other end is designed as a spigot to connect steel pipes

Implementation steps:

Insert HDPE pipe into the socket of the joint and fix it by hot-melt

Welding steel pipes to the spigot end of the joint

Adding sealing rings to enhance sealing when necessary

Advantages:

Easy and quick installation

Applicable to small and medium-sized pipes

Relatively low cost

3. Threaded connection method

Applicable conditions:

Small diameter pipes (DN≤110mm)

Low pressure working system

Implementation points:

HDPE pipe end hot-melt threaded PE joint

Steel pipe end processing matching external thread

Use sealing tape to enhance sealing

Precautions:

Not suitable for high pressure pipes

Seal status needs to be checked regularly

 

Key technical points

1. Selection of transition joints

Material should comply with GB/T 13912 standard

Pressure level should match pipeline design requirements

Interface size should be accurately measured and confirmed

2. Hot melt connection process control

Temperature control: 200-220? is appropriate

Pressure control: 0.15-0.3MPa

Time control: adjusted according to pipe diameter

3. Anti-corrosion treatment

Steel pipe welding parts need to be treated with anti-corrosion

Anti-corrosion coating or heat shrink sleeve can be used

Contacts of dissimilar metals should be insulated

4. Stress relief measures

Set flexible joints or expansion joints

Add piers at pipeline bends

Long-distance pipeline segment connection

 

Precautions for construction

Preparation before construction:

Check the quality certification documents of pipes and fittings

Measure and record the interface size

Clean the connection parts

Installation process control:

Maintain the concentricity of the connection parts

Avoid strong assembly

Perform pressure test according to the requirements of the specification

Safety matters:

Pay attention to fire prevention during hot melt operation

Take good protection when welding steel pipes

Set up warning signs in the operation area

 

Quality acceptance standards

Appearance inspection:

No visible defects in the connection parts

Anti-corrosion layer intact

Flange bolts are tightened evenly

Pressure test:

Strength test: 1.5 times the design pressure

Tightness test: 1.1 times the design pressure

Other tests:

Ultrasonic testing when necessary

Check the welding quality of hot-melt joints

The connection between HDPE pipe and steel pipe is a key technical node in pipeline engineering. Only by selecting the appropriate connection method and strictly controlling the construction quality can the long-term safe operation of the pipeline system be ensured. In actual projects, the most economical and reliable connection scheme should be selected according to factors such as pipeline specifications, working pressure, and medium characteristics, and construction and acceptance should be carried out in strict accordance with relevant specifications and standards.

Official website: www.phtopindustry.com | www.phpipes.com
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