Re motlotlo ho phatlalatsa lilemo tsa rona tse 58 tsa boitseanape ba lisebelisoa tsa lithapo tsa terata, 'me mechini ea rona e holimo-limo ea li-tubular stranding e fihlela litlhoko tsa liindasteri tse fapaneng.Mechini ea rona e etselitsoe ka ho khetheha lithapo tsa terata tse tlase tsa carbon le tse phahameng tsa carbon steel, ho netefatsa ho tšoarella le matla a thapo ka 'ngoe.Tšepa boiphihlelo le boleng ba rona ho fihlela tlhoko ea hau.
Nako ea poso: Phup-09-2023