Non-refillable metallic gas cartridges for liquefied petroleum gases, with or without a valve, for use with portable appliances. Construction, inspection, testing and marking|Pressure vessels, Thermal testing, Bosses, Portable, Drop tests, Quality control, Gas valves, Dimensions, Cans, Thickness, Valve bodies, Threads, Liquefied petroleum gas, Testing conditions, Filling, Disposable, Pressure testing, Design, Type testing, Inspection, Gas cylinders, Torsion testing, Valves, Dimensional tolerances, Volume, Leak tests, Containers, Marking, Diameter, Metals, Performance, Torque