Lub flange ua zoo li 'kev tuav tes' khoom siv rau cov kav dej, feem ntau muaj peb qhov tseem ceeb:
Sealing Surface: Ib qho chaw sib cuag tiaj tus, feem ntau suav nrog hom ntsej muag tiaj tus.
Bolt Holes: Lub qhov sib npaug sib npaug siv rau kev sib txuas ceev.
Neck Transition: Ib qho kev hloov pauv txuas txuas txuas cov yeeb nkab thiab flange.
