gas line sizing Home › Forums › Public Forums › Gas & Gasfitting › gas line sizing This topic has 1 reply, 2 voices, and was last updated 24 years, 2 months ago by fourth year. Viewing 1 reply thread Author Posts 20 Sep 2000 at 1:17 pm #278081 MasterPlumbersKeymaster need to know line size for 10# gas line supplying 7500000 btu 3 Oct 2000 at 2:01 pm #297659 fourth yearParticipant The pipe length is as important as the BTU and pressure. At 10#, which is an almost unreal pressure in most cases, it will be fairly small. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In