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The testing of bottom crack and thickness:
Only bottom air-tight testing is required by GB and international standard .Otherwise acording to the situation ,we add the special ultrosonic detector to inspect the bottom of fusion defects.
Thread machining:
The thread forming machine adopts once location and once processing ,having high thread accuracy.
Liner hydrostatic test:
We take the steel liners hydrostatic test under a certain pressure to enhance the fatigue resistance of our products.
Surface treatment:
Taking internal and external surface treatment can improve cleanliness of the internal surface and make the adhesive force of the antirust paint with the bottle stronger.
Hoop-wrapped composite cylinders with steel liner for the on-borad storage of compressed natural gas as a fuel for automotive ve