The following collection of links lead to other mechanical contracting, welding, pipefitting, and process piping industry resources on external Web sites:

• Welding information on Wikipedia
• Pipefitter information on Wikipedia
• The National Board of Boiler & Pressure Vessel Inspectors
• ASHRAE - American Society of Heating, Refrigerating & Air Conditioning Engineers
• ASME - American Society of Mechanical Engineers
• ASPE - American Society of Plumbing Engineers
• IFMA - International Facility Management Association
• Burdette, Koehler, Murphy & Associates, Inc. (BKM)
• Welding carts, BBQ smokers, metal furniture & other welding projects from Lincoln Electric