A-Grade Quful: Quful ka-hortagga tuuganimada darajada A waxay caadi ahaan isticmaalaan furayaasha A-qaabeeya iyo kuwa iskutallaabta ah.Qaab dhismeedka gudaha ee dhululubada qufulka darajada A waa mid fudud, oo leh kala duwanaansho ugu yar ee tumblers pin iyo godadka furaha gacmeed.Qufulyadan waxaa si fudud loo furi karaa hal daqiiqo gudaheed iyadoo la isticmaalayo farsamooyin gaar ah.Qaab dhismeedka kubbadda qufulka darajada A wuxuu ka kooban yahay hal saf ama qaab iskutallaabta ah ee kubbadaha guga lagu raro.

Quful Fasalka B: Quful darajada B waxay ka kooban yihiin fure fidsan oo leh dalool laba saf ah.Si ka duwan qufullada darajada A, oogada muhiimka ah ee qufullada darajada B waxay leeyihiin habayn aan joogto ahayn oo xariiqyo toosan ah.Waxaa jira saddex nooc oo waaweyn oo ah silsiladaha qufulka ee darajada B: kombuyuutar laba-gees ah dhululubo, dhululubo laba saf ah, iyo dhululubo caleen laba-laab ah.Qufulyadan waxaa sida caadiga ah lagu furi karaa iyadoo la isticmaalayo qalabyada qallooca shan daqiiqo gudahood, waxayna inta badan wadaagaan heerarka isdhaafsiga ee sarreeya.

C-Crade Quful (B+ Fasalka): Qufulka darajada C, sidoo kale loo yaqaanno B+, waxay leeyihiin qaab fure ah oo ay ku jiraan daab hal dhinac ah oo leh godad wax-shiidka gudaha ah, meel wax shiidaynta dibadda ah, ama furaha laba saf ah oo leh daab.Nooca dhululubada qufulku waa dhululubo dhinaceed, iyo qaab dhismeedka biinku waxa uu ka kooban yahay daab laba saf ah iyo biinanka dhinaca V-qaabeeya.Haddii qalab adag oo torsion ah loo isticmaalo si xoog loogu furo dhululubada qufulka, habka gudaha ayaa dhaawacmi doona, taasoo keenaysa quful is-burburin ah oo aan la furi karin.

Quful ka-hortagga tuuganimada darajada A:

Kaliya furayaasha leh hal saf oo boosaska kubbadda ah ayaa loo tixgaliyaa quful ka-hortagga xatooyada darajada A, furayaasha dimple iyo furayaasha iskutallaabtu waa tusaalooyinka ugu badan.Grooves on furaha, in kastoo aan wareeg ahayn ee muuqaalka, u dhigma qaab-dhismeedka ahfaraha quful smarttumblers pin.Qaab dhismeedka gudaha ee dhululubada qufulka darajada A waa mid fudud, oo leh kala duwanaansho ugu yar ee tumblers pin iyo godadka furaha gacmeed.

Quful ka-hortagga tuuganimada darajada B-:

Qufullada darajada B waxay leeyihiin laba nooc oo jid-fureed ah, boosaska kubbadda, iyo meelaha wax lagu shiido.Kuwaasalbaabbada ammaanka ee guryahawaxaa caadi ahaan lagu lamaaniyaa furayaal fidsan oo leh naqshad laba-geesood ah.Noocyada muhiimka ah ee qufulka darajada B waxaa ka mid ah furayaasha garaaca ee hal saf ah iyo furayaasha dimple-ka ah ee hal saf ah.Qaab dhismeedka gudaha ee dhululubada qufulka darajada B waa aad u adag marka la barbar dhigo qufulka darajada A, taasoo bixisa heer sare oo ilaalin ka dhanka ah tuugada.

(Qulfulka darajada C) B+ Heerka Quful ka-hortagga tuuganimada:

Qufulyada darajada B+, oo sidoo kale loo yaqaan qufullada darajada C, ayaa hadda loo arkaa inay yihiin kuwo ammaan ah.Marka loo eego aragtida furaha, waxay caadi ahaan leeyihiin qaabayn laba-geesood ah oo laba-gees ah oo leh daab ama qaloocyo ku xiga.Qaab dhismeedka qallafsan ee dhululubada qufulku wuxuu u baahan yahay in ka badan 270 daqiiqo si ay u furaan farsamayaqaannada xirfadda leh, iyagoo bixinaya ammaan la isku halayn karo.

Kormeerka Qufulka Albaabka ka-hortagga tuuganimada:

1. Hubi heerka Nabadgelyada ee Qufulka: Markaad dooranayso albaabka ka hortagga tuugada, waa lama huraan inaad doorato mid leh silsilad quful darajada B+ ama C.

2. Eeg qufulka albaabka ka-hortagga tuuganimada: Thequful guriga smartwaa inuu lahaadaa saxan bir ah oo dhumucdiisu tahay ugu yaraan 3mm si loo kordhiyo ilaalinta.

3. Hubi inta uu le'eg yahay Luqada Qufulka Weyn: Dhererka waxtarka leh ee carrabka qufulka ee albaabka ka hortagga tuugada waa in aanu ka yarayn 16mm, waana in uu leeyahay carrab xidhe quful ah.Haddii sifadan maqan tahay, qufulka waxaa loo arkaa mid aan tayadiisu wanaagsanayn.