Asked: November 8, 20202020-11-08T21:09:08+00:00 2020-11-08T21:09:08+00:00 What type of copper tubing for natural gas? cameron 142 Questions 1 Answer 1 Best Answer 0 Points View Profile cameron Hi. What type of copper tubing for natural gas? natural gas 1 Answer Voted Oldest Recent alice 0 Questions 136 Answers 136 Best Answers 136 Points View Profile Best Answer alice 2020-11-08T21:12:00+00:00Added an answer on November 8, 2020 at 9:12 pm For many years in fuel gas systems, the copper tube of (ASTM B 88) mainly Types K and L and ACR Tube having (ASTM B 280) having outside diameter up to 1″ are used. Conventionally, Type L is used for internal distribution systems, and for any underground lines, Type K is used. In fuel gas systems, the Tube and fittings are usually identified based on their outside diameter (O.D.) rather than their nominal sizes. Therefore, while ordering and using them, the designers and installers are more specific with their size designations. 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Attachment Select file Browse Featured image Select file Browse Save my name, email, and website in this browser for the next time I comment.