Only a few major suppliers are available for the Drilling market,
74% is covered by US based companies ,13% by Norwegian group,
7 % by China based groups ,and 6% by others incl. Romania and the Netherlands.
Drilling contractors ,mainly for 80% USA based comp.
7% Germany , 3% Denmark ,5% Russian ,4% Brasilia and 1% Vietnam .
ST can coop for deliveries under API /ASTM for where
deliveries to USA. (Derrick and Winches).