Feature

All HDPE gas pipes are made of high-quality PE4710,PE100 or PE80 from well-known manufacturers, such as: Borealis HE3490-LS, Basell CRP100, Sinopec YGH041T, etc.

HDPE gas pipes are generally made of yellow, or black with yellow stripes.

The standard length of the export is 5.8 meters or 11.8 meters. Pipe diameter less than 63mm is packaged in coils, and can also be customized according to customer requirements.

HDPE gas pipe is suitable for outdoor gas transmission with working temperature between -20°C and 40°C and long-term maximum working pressure not greater than 0.7MPa.

Siffo can provide a full range of HDPE fittings for our HDPE gas pipelines, including: HDPE heat fusion fittings and HDPE electrofusion fittings. All HDPE fittings are made from the same grade of HDPE compound as the pipe.

Siffo HDPE Gas Pipe Features

Excellent corrosion resistance

Naturally resists soil acid and alkali substances, salt and electrochemical corrosion, completely eliminates the risk of rust failure of metal pipes, and is particularly suitable for coastal and industrial pollution areas.

Extremely long service life

The design life is more than 50 years (verified by a third-party laboratory), which is 2-3 times longer than traditional metal pipes, significantly reducing the replacement cost of the entire life cycle.

Excellent flexibility and impact resistance

Can absorb the stress caused by foundation settlement (elongation at break>600%), which is particularly prominent in seismic zones and soft soil areas, reducing pipeline damage caused by geological activities.

Economic efficiency

The installation cost is about 40% lower than that of metal pipes (no anti-corrosion coating and cathodic protection are required)

The hot melt welding process does not require special equipment, and the construction efficiency is increased by 50%

Zero leakage characteristics greatly reduce indirect economic losses

Environmental adaptability

The operating temperature range is -40℃ to 60℃, covering all climate zones in the world

Can be supplied in coils (up to 1000 meters/coil), suitable for laying in complex terrain

HDPE Gas Pipe Application

Urban gas trunk pipeline laying: Large-diameter HDPE pipes (such as DN630) are used for urban high-pressure gas trunk pipelines. Relying on the high pressure resistance (1.6MPa) of PE100 grade materials, they can adapt to complex underground environments.

Chemical park gas supply: HDPE gas pipes are used to transport liquefied petroleum gas (LPG) in chemical plants. With its acid and alkali corrosion resistance, it replaces traditional steel pipes to reduce maintenance costs.

Industrial park gas pipelines: The medium-pressure pipeline network is laid using electric fusion connection technology to meet the stable gas supply needs of industrial users, and the interface is leak-free to ensure production safety.

Village gas access project: Small-diameter HDPE pipes (such as DN50-DN75) are used to connect rural houses. The flexibility adapts to the undulating terrain and the construction period is shortened by more than 30%.

Gas stations in remote areas: HDPE pipes are used to connect gas storage and distribution stations with user terminals to solve the problem of long-distance transportation and reduce construction costs.

Gas transmission in high-cold areas: In an extremely cold environment of -40℃, HDPE pipes maintain flexibility, avoid low-temperature brittle cracking, and ensure stable gas supply in winter.

Gas pipelines in earthquake zones: Using the deformation resistance of HDPE pipes (elongation at break ≥ 500%), pipelines are laid in geologically active areas to reduce the risk of pipeline rupture caused by earthquake disasters.

Installation & Maintenance

Installation: Use heat fusion welding for leak-free joints.

Maintenance: No anti-corrosion treatment required; periodic pressure testing suffices.The impact strength of HDPE gas pipes is lower than that of steel pipes, and they are easily scratched by sharp objects or damaged by external forces. Therefore, protective measures must be taken (such as laying warning tapes, increasing the burial depth, etc.) to prevent third-party construction from causing damage to them.

The following are the storage methods for natural gas pipes:

Keep the environment dry: The pipes should be stored in a dry place, strictly avoid humid environment or moisture, and prevent moisture from affecting the performance of the pipes.

Avoid direct sunlight: During storage, ensure that the pipes are in an environment without direct sunlight to prevent the pipes from aging faster due to light.

Control storage temperature: The pipes should be stored at room temperature. It is necessary to avoid excessively high temperatures that cause the pipes to soften and deform, and to prevent excessively low temperatures that make the pipes brittle and vulnerable.

Take anti-corrosion measures: During storage, effective measures should be taken to prevent the surface of the pipes from contacting various chemical substances to prevent the pipes from being damaged by chemical corrosion.

Prevent heavy pressure stacking: When stacking pipes, the stacking height should be reasonably controlled and not stacked too high to prevent the pipes from deforming or breaking due to excessive pressure.

Siffo HDPE gas pipes strictly follow international authoritative standards and implement intelligent quality control throughout the entire process from raw material selection to finished product production. The production process uses ISO 4437 (European gas pipeline standard), EN 1555 (polyethylene pipe system standard) and ASTM D2513 (polyethylene pipe standard for gas transmission) as technical benchmarks, and adopts high-precision automated production lines and real-time monitoring systems to ensure that the physical properties, compressive strength and long-term stability of each meter of pipe meet the stringent requirements of global gas engineering.