CAD DWG drawing file having the Isometric view of Butt weld Section details This DWG file having the drawing of Butt welded connection design and Weld mapping process is available. The are 6 different butt welded connections details, number of welding ,different piping materials ,equipment details,welding parts are clearly explained in this Drawing. Download the CAD DWG file.Thank you so much for downloading AutoCAD files from cadbull website.