Nke akụ na ụbanaoru oma jirinke ịfụ mmanya bụemetụtara by ọtụtụ ihe dị otú ahụdị ka:ihe nri, rotor ọsọ, mmiriọdịnaya nkeihe, nhankeihentinye,okenkena-etipịawdg.
Mgbe sna-ahọpụtammanya na-egbu egbu, mgbe niiletụlee nke na-eso isi:
- Keduihe ga-emebụrụanuahade(e.g.mbibi ihe)?
- Kedunhabụ nkeihentinye (dịkamaximum ntinyenha60 mm)?
- Isnkeihe atọ- akụkụ ma ọ bụ larịị?
- Wokpu bụ oke abrasiveness?
Oge nzipu: Ọgọst-02-2021