Industrial bottles
Industrial / pressure gas bottles which are not normally used directly as diving bottles, e.g.: gas bottles of 20 liters, 50 liters, and 80 liters. These pressure vessels are used for various gases, e.g., oxygen, helium, argon, carbon dioxide, compressed air, mixed gas, shielding gases, nitrogen, and much more. They are also used for building storage banks, available both as 200 bar and 300 bar gas bottles. The neck threads of the bottles always depend on the size and purpose of the pressure gas bottles. For smaller pressure gas bottles, small conical threads (17E) or M18x1.5mm are used, for larger bottles, the thread types large conical (25E) and M25x2mm are used. A very rare bottle neck thread is M30x2 which is predominantly used in aluminum industrial bottles.