Steel tubing is a key component of the CNG (compressed natural gas) system, used to transport gas from the tank to the regulator and other components of the system.
Functions of CNG steel tubes
Gas transmission: Tubing ensures the safe and leak-free transport of CNG gas under high pressure from the tank to the regulator and injectors, allowing gas to flow to the engine.
Pressure resistance: The steel tubing is made of high-strength steels to withstand the high pressure of the CNG system (up to 250 bar).
Corrosion resistance: CNG steel tubes are coated with anti-corrosion coatings to protect them from corrosion and ensure a long service life.
Advantages of CNG steel tubing
Durability: CNG steel tubes are extremely strong and resistant to deformation, ensuring the safety of the installation.
Leak-proof: Steel tubing provides excellent leak-tightness, which prevents gas leaks.
Temperature resistance: CNG steel tubing is resistant to both high and low temperatures, allowing it to be used in a variety of climatic conditions.
Assembly of CNG steel tubes
The installation of CNG steel tubing should be carried out by a qualified gas fitter with the necessary certification and experience. Assembly includes:
Selecting the correct tubes: The tubes must be matched to the CNG system type, diameter and length, as well as to the pressure requirements.
Joining the tubes: The steel tubes are joined together by welding or threading, using specialised tools and techniques.
Tube fixing: Tubes are fixed to vehicle structural components using brackets or mounting straps, ensuring a stable and secure fixing.
Leak testing: After installation, thorough leak testing of the CNG system should be carried out to ensure that there are no gas leaks.
The best CNG steel tubes
Among the most popular manufacturers of steel tubing is Faro (owned by OMB) of Italy. Faro's range of steel tubing includes both seamed tubing (seamed steel tubing) and seamless (‘seamless’) CNG tubing for advanced CNG installations, where the strength of the CNG tubing is crucial for safety.
