1. Maererano nechimiro chemuchinjikwa-chikamu chesefa bhegi, yakakamurwa kuva mabhegi akadzika (trapezoid uye flat) uye mabhegi akapoteredza (cylindrical).
2. Maererano nenzira yemhepo inopinza uye yekubuda, yakakamurwa kuva: yakadzika mhepo inopinza uye yekumusoro mhepo yekubuda, yekumusoro mhepo inlet uye yakaderera mhepo yekubuda uye yakananga ikozvino mhando.
3. Maererano nenzira yekusefa yebhagi resefa, rakakamurwa kuva: kufefetera kwekunze uye kusefa kwemukati.
4. Zvinoenderana nemamiriro ekushandiswa kwebhegi resefa uye chirongwa chekushisa, chakakamurwa kuva: tembiricha yakajairika, tembiricha yepakati uye tembiricha yepamusoro.
Nzira yekuchenesa madota:
1. Gasi kuchenesa: Gasi kucheneswa kunoitwa nepamusoro-kudzvanywa gasi kana mhepo yekunze inodzosera kumashure bhegi resefa kuti ibvise guruva pabhegi resefa.Kucheneswa kwegasi kunosanganisira kupuruzira pulse, reverse blowing uye reverse kuyamwa.
2. Mechanical rapping yekubvisa guruva: yakakamurwa kuva top rapping uye yepakati rapping yekubvisa guruva (zvese zvemasaga emasefa).Zvinoitwa nekukwenya nguva nenguva mutsara wega wega wemasefa mabhegi nenzira yemuchina wekurep.Guruva pabhegi resefa.
3.Manual tapping: imwe neimwe sefa bhegi inobatwa nemaoko kuti ibvise guruva pabhagi resefa.
Nguva yekutumira: Zvita-16-2021