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3/4 poly gas pipe is a kind of high-density polyethylene (HDPE) pipe specifically used in the transportation systems of natural gas and liquefied petroleum gas. It has excellent corrosion resistance, flexibility and long-term safety in use, and is widely used in fields such as urban gas transmission and distribution networks, residential gas supply, industrial gas transportation and commercial building gas systems. With its stable performance and economical installation cost, this product has become an ideal choice to replace traditional steel pipes.
Material and Structural Features of 3/4 poly gas pipe:
3/4 poly gas pipe is made from high-density polyethylene (PE100 or PE100RC), which offers excellent chemical stability and resistance to environmental stress cracking. Its smooth outer wall and low inner friction coefficient effectively reduce pressure loss during gas transmission. The pipe typically features a black outer layer with yellow markings to distinguish its intended use and ensure safe identification during construction and maintenance.
In addition, this gas pipe utilizes hot-melt or electric-melt connections, creating a single-piece structure at the joints, eliminating the risk of leakage. Its high pressure resistance allows for long-term, safe operation in medium- and low-pressure gas systems ranging from 0 to 0.4 MPa.
Performance Advantages
High Corrosion Resistance
Unaffected by soil, acidic and alkaline chemical media, or electrochemical corrosion, it is particularly suitable for underground installation. Compared to metal pipes, it requires no anti-corrosion coating or cathodic protection system, reducing maintenance costs.
Excellent Flexibility and Seismic Resistance
Polyethylene’s inherent flexibility allows 3/4-inch pipe to withstand uneven ground and minor geological deformation without breaking, making it ideal for complex urban underground environments.
Reliable, Leak-Free Connections
Using hot-melt or electric-melt welding, the joints are seamlessly integrated into the pipe body, eliminating potential leaks and ensuring the long-term safe operation of the gas transmission system.
Lightweight and Easy Installation
Weighing only about one-seventh of steel pipe, the pipe is easy to handle and highly efficient to install. It can be supplied in coils, reducing the number of joints and shortening the construction period.
Long Service Life
Under standard operating conditions, 3/4-inch poly gas pipe is designed to have a service life of over 50 years, offering significant long-term economic benefits.
Applications
Urban residential gas distribution pipes;
Industrial park or factory gas distribution networks;
Commercial buildings, schools, hospitals, and other public facility gas systems;
Rural clean energy transformation projects;
Underground gas pipeline renewal and replacement projects.
The 3/4-inch size is particularly common in residential and commercial gas projects, meeting both medium and low-pressure gas transmission needs while facilitating construction and maintenance.
3/4 Poly Gas Pipe Specifications and Standards
Commonly used 3/4 poly gas pipe conforms to international standards such as ASTM D2513 and ISO 4437. Its outer diameter is approximately 26 mm (SDR11 specification) and it can withstand a working pressure of 0.4 MPa. The pipe is typically supplied in coils, with custom lengths available, such as 50-meter, 100-meter, or even longer, for easy on-site installation.
Environmental and Economic Benefits
Polyethylene gas pipe is an environmentally friendly product, free of harmful substances and harmless to the environment during production and use. Due to its long service life, low maintenance costs, and simplified installation, it offers an overall investment savings of over 30% compared to traditional steel pipe, making it the most cost-effective option for modern city gas systems.
Due to its excellent corrosion resistance, reliable sealing performance, and long service life, 3/4 poly gas pipe has been widely recognized as the preferred pipe material for gas transportation. Whether in new gas projects or renovations of old pipeline networks, Poly Gas Pipe can ensure the stable operation of gas systems in a safe, economical and efficient manner, providing users with long-lasting and safe energy transmission solutions.
