Excludes
filled gas cylinders and items related to gaseous and liquefied gaseous dispensing systems, both mobile and installed. All components of installed gas dispensing systems are classified by "application" or "function" with the end equipment for which designed.

Notes
This class includes empty commercial and industrial gas cylinders and their caps, valves, and valve spare parts.

Possible NAICS Codes
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
332420 – Metal Tank (Heavy Gauge) Manufacturing
325120 – Industrial Gas Manufacturing