A sub is a special short length of threaded pipe used to
connect drill pipes to drill collars, with a drill pipe
connection on one end and a drill collar connection on
the other. Products are manufactured in accordance with
API Spec 7 RP7G as applicable.
There is a wide range of subs available, including:
Lift Plug (None/Pin)
Top Drive Saver Sub (Pin/Pin)
Bit Sub with/without Float Bore (Box/Box)
Straight Crossover Sub (Box/Pin, Box/Box, Pin/Pin)
Kelly Saver Sub (Box/Pin)
Crossover Sub with Float Bore (Box/Pin, Box/Box,
Pin. Box)
Lift Sub (None/Pin, Box/Pin)
Bottleneck (reduced section) Sub (Box/Pin, Box/Box,
Pin/Pin)
Options :
