HDPE pipe and fitting,PVC pipe and fitting

HDPE (high-density polyethylene) pipes have become an ideal substitute for traditional metal pipes in the field of gas transportation due to their excellent performance and safety. The following are the main advantages of HDPE gas pipes and related safety standards:

Advantages of HDPE gas pipes

1. Excellent corrosion resistance

HDPE is an inert material that can withstand corrosion from a variety of chemical media, including natural gas, liquefied petroleum gas (LPG) and liquid hydrocarbons in manufactured coal gas, and will not undergo electrochemical corrosion or rust.

2. High toughness and impact resistance

The low-temperature embrittlement temperature is as low as -60°C, and it can be used safely in extreme climates. It has strong seismic resistance and adapts to uneven foundation settlement.

3. Reliable connection method

Adopting hot-melt butt or electric fusion connection, the joint strength is higher than the pipe body itself, eliminating the risk of leakage.

4. Long life and aging resistance

Contains 2-2.5% carbon black, is resistant to ultraviolet radiation, and has a service life of more than 50 years.

5. Convenient and economical construction

Light weight, can be transported in coils, supports trenchless technology (such as jacking, directional drilling), and reduces installation costs.

6. Wear resistance and low flow resistance

The wear resistance is 4 times that of steel pipes, the inner wall is smooth (Manning coefficient 0.009), and the energy consumption of gas transmission is reduced.

7. Environmental protection and safety

The material is non-toxic, recyclable, and meets green environmental protection requirements.

 

Safety standards for HDPE gas pipes

1. International and national standards

GB 15558.1-2015: China"s gas pipe standard, covering PE80 and PE100 materials, and specifies series such as SDR11 (0.4MPa) and SDR17.6 (0.2MPa).

ISO 4437: International standard that specifies the chemical resistance and long-term performance of PE pipes in gas transportation.

2. Color identification

The pipe is usually black with yellow stripes to ensure eye-catching identification.

3. Construction specifications

Specialized hot melt/electric melt equipment must be used to ensure that the interface is defect-free; a sand layer must be laid to protect the pipeline during backfilling.

4. Pressure level

SDR11 is suitable for gas containing liquid hydrocarbons (such as LPG), and SDR17.6 is suitable for low-pressure natural gas.

5. Quality control

Production must pass ISO9001 certification, and some companies use high-quality raw materials such as Borealis to ensure resistance to slow crack growth (SCG) and rapid crack propagation (RCP).

 

Application areas

HDPE gas pipes are widely used in:

Natural gas transmission and distribution

Liquefied petroleum gas (LPG) transmission

Artificial gas pipelines

Industrial gas supply.

HDPE pipes are gradually replacing traditional steel pipes and cast iron pipes with their corrosion resistance, high safety and long life, becoming the preferred material for modern gas transmission systems.

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