ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
E21B0017010000 Risers (riser connectors E21B0033038000) 1
E21B0017020000 Couplings; Joints 1
E21B0017030000 between drilling rod or pipe and drill motor, e.g. between drilling rod and hammer 1
E21B0017040000 between rod and bit, or between rod and rod 1
E21B0017042000 threaded 1
E21B0017043000 with locking means 1
E21B0017046000 with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches 1
E21B0017050000 Swivel joints 1
E21B0017060000 Releasing-joints, e.g. safety joints 1
E21B0017070000 Telescoping joints for varying drill string lengths; Shock absorbers (heave compensators in the derrick E21B0019090000; releasing-jars E21B0031107000) 1
E21B0017080000 Casing joints 1
E21B0017100000 Wear protectors; Centralising devices (drives used in the borehole with anchoring means E21B0004180000; guiding or centralising devices outside the borehole E21B0019240000) 1
E21B0017120000 Devices for placing or drawing out wear protectors 1
E21B0017140000 Casing shoes 1
E21B0017160000 Drill collars 1