Fakitale yathu imatha kupanga maulalo osiyanasiyana omwe amayambira 90mm mpaka 226mm, ndi oyenera mitundu yonse yamakina opangira ma excavator, bulldozer, makina aulimi ndi makina apadera.
Unyolo wowuma, maunyolo omata omata ndi opaka mafuta, maunyolo opaka mafuta ogwiritsira ntchito kwambiri.
Ulalo wa njanji wachitidwa chithandizo chowumitsa pafupipafupi, chomwe chimatsimikizira kulimba kwake komanso kukana kwa abrasion.
Pini imachitidwa pakuwotcha komanso kuwongolera kwapakati pafupipafupi, komwe kumatsimikizira kuuma kokwanira kwapakati ndi kukana kwa abrasion kwa ma sunaces akunja.
The chitsamba zachitika carbonization ndi pamwamba sing'anga-pafupipafupi quenching mankhwala, amene amaonetsetsa wololera kuuma pachimake ndi abrasion kukana za mkati ndi kunja.