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| зона твердосплавного покрытия (Johnny Bravo) | |||
| армированная зона (Tool joints with cracks in the threaded areas, excluding any hardband area, are considered unfit for further service. inplus); упрочнённая зона (inplus); усиленная зона (inplus) | |||
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| зона твердосплавного покрытия (Johnny Bravo) | |||
| армированная зона (Tool joints with cracks in the threaded areas, excluding any hardband area, are considered unfit for further service. inplus); упрочнённая зона (inplus); усиленная зона (inplus) | |||