| Öl- u. Gastechnik |
high-torque drillpipe (MichaelBurov); high-torque drill pipe (MichaelBurov); hi torque drill pipe (MichaelBurov); high-torque drill pipe and tool joint (MichaelBurov); high-torque drill pipe with high-torque tool joint (MichaelBurov) |
