ABS (American Bureau of Shipping) 
www.eagle.org

ANSI (American National Standards Institute)
web.ansi.org

API
www.api.org

ASA (American Supply Association)
www.asa.net

ASME (American Society of Mechanical Engineers)
www.asme.org

ASTM (American Society for Testing and Materials)
www.astm.org

ISA (Integrated Systems Analysts, Inc.)
www.isa.com

ISO (International Organization for Standardization)
www.iso.org/iso/home.htm