API Delevan 1641-684H
API Delevan 1641-104H
API Delevan 1641R-474H
API Delevan 1641R-124H
API Delevan 1945-14H
API Delevan 1945-18H
API Delevan 1945-22H
API Delevan 1945-24H
API Delevan MIL2510-72K
API Delevan 1638R-00G