Descriptions about CNG high pressure pipelines 1.Made of stainless steel(304 2.Test pressure:30Mpa 3.Test before delivery 4. Details about CNG high pressure pipes CHG tube: resist high press from outside,no leak on tube, tested by 500kg water press;smooth and tough,advanced technology1. Main use: widely used in CNG fuel-auto and double fuel-auto, auto-braking system; auto-oil system, fuel system, ...