The nominal volume is not less than 1000L, and is used for movable pressure vessels that can be repeatedly inflated without an adiabatic device for compressed gas. Commonly used are oxygen cylinders, acetylene bottles and so on. Car gas bottles.
General volume in 50-140 liters, pressure 20MPa, outside diameter 325mm. There are now two kinds of full cylinders, a ring-winding, winding bottles are new technology, security is higher, light weight, winding layer material is glass fiber, cylinder main material 30CrMo
The general modification is placed in the trunk of the car.