| Name & url | Description |
|---|---|
| ASTM http://www.astm.org |
USA standards |
| BSi http://www.bsonline.bsi-global.com |
British Standards Institute |
| CEN http://www.cen.eu |
European Committee for Standardisation |
| DIN http://www.din.de |
German standards |
| ISO http://www.iso.org |
International Standards Organisation |