Charlotte Pipe and Foundry's AutoCAD CD version 3.0 was ranked number one onPM Engineermagazine's list of Top 10 Products based on reader inquiries. Ranked in the top 10 in each of the last four years, the CD includes all the product specifications and technical data mechanical contractors, engineers and OEMs need to design their systems.PM Engineeris published by BNP Media Co., as is SUPPLY HOUSE TIMES.