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ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
E21B0010220000 characterised by bearing, lubrication or sealing details 1
E21B0010230000 with drilling fluid supply to the bearings 1
E21B0010240000 characterised by lubricating details (E21B0010230000 takes precedence);; 1
E21B0010250000 characterised by sealing details 1
E21B0010260000 Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers (percussion drill bits with leading portion E21B0010400000; augers with leading portion E21B0010440000) 1
E21B0010280000 with non-expansible roller cutters 1
E21B0010300000 Longitudinal axis roller reamers, e.g. reamer stabilisers 1
E21B0010320000 with expansible cutting tools 1
E21B0010340000 of roller-cutter type 1
E21B0010360000 Percussion drill bits (characterised by wear resisting parts E21B0010460000) 1
E21B0010380000 characterised by conduits or nozzles for drilling fluids 1
E21B0010400000 with leading portion 1
E21B0010420000 Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits (characterised by wear resisting parts E21B0010460000, by conduits or nozzles for drilling fluid E21B0010600000, by detachable parts E21B0010620000) 1
E21B0010430000 characterised by the arrangement of teeth or other cutting elements 1
E21B0010440000 Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts (E21B0010420000 takes precedence;drilling rods with helical structure E21B0017220000) 1
จำนวนรหัสข้อมูล 15 จาก 73902