Symbol Libraries Compatible with AutoCAD for Mac and AutoCAD LT for Mac P&ID Symbols Library version 1.0 More information  |  Buy Now Quickly create piping & instrumentation diagrams with this easy to use block library. Includes valves, pumps, tanks, piping equipment, instruments and more. Steel Shapes Library version 1.0 More information  |  Buy Now Within seconds, you'll be able to select and insert the steel shape you need for your structural layouts. This block library contains over 1,000 steel shape cross sections: W shapes, HP shapes, channels, angles, S shapes, structural tube, and more. Electrical Symbols Library version 1.0 More information  |  Buy Now Electrical diagram symbols, power symbols, lighting and grounding symbols are included in this unique AutoCAD block library. Quickly insert the symbol you need with the easy to use Content Palette. Architect Symbols Library version 1.0 Coming soon! All content on this website is © 2012 CADToolsOnline.com. All rights reserved.