Helpful Links

www.ASME.org - American Society of Mechanical Engineers
www.TEMA.org - Tubular Exchanger Manufacturers Association
www.xcalcs.com - Various free calculations associated with engineering
www.gowelding.com - Great site, amazing amount of useful resources involving metal fabrication
www.matweb.com - Excellent free metallurgical site
www.autodesk.com - AutoCAD
www.computereng.com - Advanced Pressure Vessel Software