1. E ai ki te paerewa o te ahumahi miihini, ko nga momo flange he: momo peretiflange flat-welded, kopa-weled flange, flange whakauru, kopa-paiherea momo mowhiti-pereti karekau karekau karekau, kopa-paariki momo mowhiti-pereti momo karekau karekau wetewete, kopa mowhiti-pereti momo karekaukarekau ringaringa, uhi flange.
2. Momo flangekia rite ki te tikanga o te ahumahi matū: paraharaha papaflange fehokotaki'anga(PL), me te papatahikarekau kaki fehokotaki'anga(SO), flange whakauru (IF), flange miro diameter (Th), me (WN) flange reke fehokotaki'anga,flange fehokotaki'anga turanga(SW), te whakakai reke fehokotaki'anga flange wetekina (PJ/SE),mowhiti fehokotaki'anga flat flange wewete(PJ/RJ), uhi flange (BL), uhi flange ararewa (BL (S)).
3. E ai ki te paerewa o te motu, ko nga momo flange he: papa peretiflange fehokotaki'anga, kaki papatahiflange fehokotaki'anga, kaki kakiflange fehokotaki'anga, flange whakauru, flange miro, kopa kaiki fehokotaki moka, reke reke kowhiti mowhiti kaokao karekau karekau karekau, reke kopa whakakai pereti momo pereti karekau karekau, kopa mowhiti pereti momo kopa karekau, kopa.
4. E ai ki te paerewa o te ahumahi petrochemical, ka taea te wehewehe i nga flanges kipapatahi-paiherea flanges(SO), flanges reke-weled (WN), flanges miro (PT), flanges paiherea turanga (SW), flanges karekau wetewete (LJ), me nga potae flange (kaore i tohua ki te ripanga).