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CNG welded tube

Our CNG welded tubes are welded precision steel tubes designed for small-diameter fluid conveyance in Compressed Natural Gas systems. Unlike large-diameter seamless cylinders for gas storage, these welded tubes are engineered for high-pressure fuel lines, control lines, and interconnection piping within CNG vehicles and refueling infrastructure. They offer excellent dimensional consistency, superior surface finish, and cost-effectiveness while meeting stringent safety standards for pressure and fatigue resistance.

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Product Details

Advantage:



Application:

Our small-diameter CNG welded tubes are critical components in the safe and efficient routing of gas throughout the system:
  • High-Pressure Fuel Lines: Connecting the cylinder valve manifold to the pressure regulator (PRD). These tubes must withstand full system pressure (typically 200 bar).
  • Low-Pressure Lines: Carrying regulated gas from the PRD to the engine fuel rail or mixer.
  • Instrumentation & Control Lines: Used for pressure sensor connections, valve control lines, and gauge lines within the fuel delivery module.
  • Refueling Receptacle Plumbing: Internal tubing connecting the refueling receptacle to the system.
  • Interconnection Piping: Linking multiple cylinders in a bank within the vehicle storage system.

Specifications:

Production name: CNG Welded Tube
Standard: DIN 2391 EN 10305-1 NFA 49-310
Steel Grade: ST 37.4 E235 TU37B
Delivery Condition: NBK, +N
Size: OD*WT:6*1MM/8*1MM/10*1MM or customized
 Length as per request
Surface: Galvanized