CNG High pressure pipeline is smooth and treated by acid. Each batch of high pressure pipe is carried out hydraulic test, flattening test, flaring test, intergranular corrosion test  according to GB / T 14975-2002 standards.

The following are the parameter of high pressure pipeline:

Yield strength: ≥205Mpa

Tensile strength: ≥520Mpa

Extensibility: ≥35%

Rigidity: 75

External diameter: 6mm   +0/-0.08

Wall thickness: 1.0mm  +0.12/-0.10

Length: 5.5m - 0.9kg  6.0m - 1kg  7.0m - 1.1kg