ʻO kahi flange, i ʻike ʻia he flange a i ʻole flange. ʻO ka flange kahi mea e hoʻopili ai i nā kumu a hoʻohana ʻia no ka hoʻopili ʻana i nā welau paipu; He mea maikaʻi nō hoʻi nā flanges ma ka puka komo a me ka puka o nā lako, i hoʻohana ʻia no ka hoʻopili ʻana i ʻelua mau mea hana, e like me nā flanges pahu pahu. ʻO ka pilina flange a i ʻole ka hui flange e pili ana i kahi pilina hiki ke wehe ʻia e ka hui ʻana o nā flanges, gaskets, a me nā bolts i hoʻopili pū ʻia ma ke ʻano he ʻano hoʻopaʻa. ʻO ka flange pipeline e pili ana i ka flange i hoʻohana ʻia no ka paipu ʻana i nā lako paipu, a i ka wā e hoʻohana ʻia ai i nā mea hana, pili ia i nā flanges inlet a me waho o nā mea hana. E like me nā pae kaomi nominal like ʻole o nā valve, ua hoʻonohonoho ʻia nā flanges me nā pae puʻe like ʻole i nā flanges pipeline. Ma kēia ʻano, hoʻolauna nā mea ʻenekini Kelemania mai Ward WODE i kekahi mau pae puʻupuʻu flange maʻamau e like me nā kūlana honua.

Wahi a ASME B16.5, loaʻa i nā flanges kila he 7 puʻe helu: Class150-300-400-600-900-1500-2500 (e pili ana i nā flanges maʻamau aupuni he PN0.6, PN1.0, PN1.6, PN2.5, PN4 .0, PN6.4, PN10, PN16, PN25, Nā helu PN32Mpa)

Akaka loa ka helu kaomi o ka flange. Hiki i nā flanges Class300 ke kū i ke kaomi ʻoi aʻe ma mua o Class150 no ka mea pono e hana ʻia nā flanges Class300 me nā mea ʻoi aku ke kū ʻana i ke kaomi ʻoi aku. Eia nō naʻe, hoʻopili ʻia ka mana compressive o nā flanges e nā kumu he nui. Hōʻike ʻia ka helu kaomi o kahi flange ma nā paona, a aia nā ʻano like ʻole e hōʻike ai i ka helu kaomi. No ka laʻana, ua like nā manaʻo o 150Lb, 150Lbs, 150 #, a me Class150.