what should be the right technical description for a carbon steel pipe with Outer diameter 0.5 inch to stand an operating pressure 70 bar and a hydro test pressure 105 bar?
Carbon Steel Pipe of 12mm OD? Have you seen this pipe? are you sure you can outsource this "Tubing" with carbon steel materials? Please make sure if somebody can supply this tubing. What will be the wall thickness of this tubing? I doubt you can get this type of tubing @ 70 bar OP....