A pipe fabricator can read it and understand pipe routine easily. An isometric drawing is generally on a A3 size paper. To aid pipe fabricator on site, isometric drawings are prepared. But 3D scale model can not be put on a paper, and 3D scale model does not indicate dimensions. A pipe fabricator can understand GA drawing better only with the help of 3D scale model. A0 or A1 size drawing is to big to handle.
A GA drawing is generally on A0 or A1 size paper and contains a lot of lines, and may not be easy to understand pipe routine. 2D General Arrangement (GA) drawings are used for fabrication on site. This is then converted into a 3D scale model, to check interference of pipe lines. In this all pipelines are drawn at zero z co ordinate. HOME Piping Drawings Piping Isometrics P&I Diagram 2D Piping 3D Piping Models LISP Training Piping Training Design Info Tubular Exchanger Agitator / Mixer Design & Drawings Tubular Exchanger Agitator / Mixer Zero Hold up Filter Process Vessel Jib Crane About Me My Resume Contact Me Cross Country Piping Satish Lele M: 9198202 77283 Why Isometric Drawings are required? : Generally in the development of a project, a conceptual 2D drawing is first created.