Steel Tube Standards - UL
NORTH AMERICA
UL
Underwriters Laboratories
333 Pfingsten Road
Northbrook, IL 60062-2096
USA
Tel (1) 847 272 8800 - Fax (1) 847 272 8129
Web site: www.ul.com
6
Rigid metal conduits
797
Electrical metallic tubing
1242
Intermediate metal conduit