BS EN ISO 11363-2. Gas cylinders. 17E & 25E taper threads for connection of valves to gas cylinders. Part 2. Inspection gauges Gas cylinders, Transportable, Outlet connections, Taper threads, Threads, Gas valves, Gas pressure vessels, Thread gauges, Ring gauges, Plug gauges, Plain gauges, Inspection,
Dimensions, Diameter, Thread forms, Thread pitch, Marking, Verification, Mathematical calculations