HDPE pipe and fitting,PVC pipe and fitting

In the chemical industry, transporting corrosive media such as acids, alkalis, salts and other chemicals is a very challenging task. As the core of the transportation system, the material selection of the pipeline directly affects the safety and economy of operation. Among many materials, high-density polyethylene (HDPE) pipes have become one of the first choices in the chemical industry due to their excellent corrosion resistance, toughness and service life.

 

Why choose HDPE pipes for the chemical industry?

1. Excellent corrosion resistance

HDPE pipes have extremely high chemical stability to most inorganic acids, alkalis and salt solutions. It can effectively resist corrosive media such as sulfuric acid, hydrochloric acid, sodium hydroxide, and is widely used in chemical waste liquids, wastewater treatment, industrial water supply and drainage systems.

2. High impact strength and good wear resistance

HDPE pipes have good flexibility and impact resistance, and can maintain excellent performance even in low temperature environments, and are not prone to rupture. At the same time, its inner wall is smooth, the fluid resistance is small, and it is not easy to scale and clog after long-term use.

3. Easy installation and low maintenance cost

HDPE pipes can be connected by hot-melt or electric fusion. The joints are firm and leak-free, suitable for long-distance continuous laying, greatly reducing connection points, and reducing maintenance costs and labor costs.

4. Long service life and high cost performance

Under normal use conditions, the service life of HDPE pipes can reach more than 50 years, and its overall return on investment is much higher than that of traditional metal or cement pipes.

 

Recommended specifications and application scenarios

In the chemical industry, according to different conveying media and pressure requirements, the following commonly used HDPE acid and alkali resistant pipe specifications are recommended:

Specification (Outer Diameter × Wall Thickness)	Pressure Rating (PN)	Application Examples
63mm × 5.8mm	PN10	Laboratory waste discharge, small-scale chemical systems
110mm × 10.0mm	PN16	Main pipelines for acid and alkali transport
160mm × 14.6mm	PN16	Circulating water or wastewater systems in chemical plants
250mm × 22.7mm	PN16	Pipelines in large chemical industrial parks

Note: All recommended products are made of PE100 raw material and comply with ISO 4427 and GB/T 13663 standards.

 

Precautions for selecting HDPE acid- and alkali-resistant pipes

1. Clarify the type and concentration of the conveying medium and select the appropriate pressure level;

2. Confirm the operating temperature of the pipeline. Generally, HDPE pipes are suitable for the range of 0? to 60?;

3. Experienced manufacturers are preferred to ensure the quality of raw materials and welding technology;

4. Use corrosion-resistant HDPE pipe fittings to ensure the overall performance of the system.

 

In the pursuit of efficient, safe and sustainable modern chemical industry, HDPE acid- and alkali-resistant pipes are gradually replacing traditional pipes with their excellent comprehensive performance and cost advantages, becoming the ideal choice for the new generation of chemical conveying systems. We recommend that purchasers give priority to certified and experienced HDPE pipe manufacturers when selecting to ensure stable, safe and reliable system operation.

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