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ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
E21B0017180000 Pipes provided with plural fluid passages (circulation of drilling fluid by means of such pipes E21B0021120000) 1
E21B0017200000 Flexible or articulated drilling pipes 1
E21B0017220000 Rods or pipes with helical structure (drill bits with helical conveying portion E21B0010440000) 1
E21B0019000000 Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables (surface drives E21B0001020000, E21B0003020000) 1
E21B0019020000 Rod or cable suspensions (load-engaging elements for hoisting or lowering purposes in general B66C0001000000; crown blocks or pulley blocks B66D; cable guides B66D0001360000) 1
E21B0019040000 Hooks 1
E21B0019060000 Elevators, i.e. rod- or tube-gripping devices 1
E21B0019070000 Slip-type elevators (slips in rotary tables E21B0019100000) 1
E21B0019080000 Apparatus for feeding the rods or cables (E21B0019220000 takes precedence;automatic feed E21B0044020000; hoisting drums B66D); Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods 1
E21B0019081000 Screw-and-nut feed mechanisms 1
E21B0019083000 Cam, rack or like feed mechanisms 1
E21B0019084000 with flexible drawing means, e.g. cables 1
E21B0019086000 with a fluid-actuated cylinder (E21B0019084000, E21B0019087000, E21B0019090000 take precedence);; 1
E21B0019087000 by means of a swinging arm 1
E21B0019089000 with a spring or an additional weight 1
จำนวนรหัสข้อมูล 15 จาก 73902