So I am looking for a way to sort a water main layer in a map by pipe diameter size, and then map import each pipe size .shp into AutoCAD so that I can create unique line types that show pipe diameter size in an AutoCAD drawing. Is there a quicker way to do this than having to use 'select by attributes' in the water main layer, and sort by unique value (Pipe diameter) and export for each size? This could take awhile as there are more than a dozen diameter sizes to sort through. Is there a geoprocessing method or python script that could break down this process and make it quicker? Any insight into this would be appreciated.