"Aidan Karley" lid wrote
in message r.invalid...
In article , Dave Fawthrop
wrote:
They *don't*, only *English* ones have left hand threads for Flammable
gasses, which indicates the contents.

The same convention ("left-hand for hydrogen") is used by at
least two Russian mudlogging companies operating in two parts of Siberia
separated by the guts of 700km,

What is "the guts of 700km"?