| ASME | American Society of Mechanical Engineers | www.asme.org |
| API | American Petroleum Institute | www.api.org |
| AWS | American Welding Society | www.aws.org |
| ANSI | American National Standards Institute | www.ansi.org |
| AWWA | American Water Works Association | www.awwa.org |
| ASTM | American Society of Testing and Materials | www.astm.org |
| NACE | National Association of Corrosion Engineers | www.nace.org |
| SSPC | Steel Structure Painting Council | www.sspc.org |
| ASNT | American Society of Nondestructive Testing | www.asnt.org |
| ASM | American Society of Materials | www.asminternational.org |
| NSPE | National Society of Professional Engineers | www.nspe.org |