Typical details of outlet gas (Type D) were given in the autocad DWG Drawing file. Vertical copper pipe is given. Copper pipes are commonly used in the construction industry for water supply lines and refrigerant lines in HVAC (heating, cooling, and air-conditioning) systems. Copper pipes can be manufactured as soft or rigid copper and offer excellent corrosion-resistance and reliable connections. Thank you for downloading the 2D Autocad file and other cad files from our website.