ʻO ka lepa i ulana ʻiapili i aflangehoʻopili ʻia me ke kaula a me ka paipu. I ka wā hoʻolālā, hiki ke mālama ʻia e like me ka weheflange. ʻO ka pōmaikaʻi, ʻaʻole koi ʻia ka welding, a me ka torque hou i hana ʻia e kaflangeliʻiliʻi loa ka deformation ma ka cylinder a paipu paha. ʻO ka hemahema ʻo ia kaflangenui ka mānoanoa a he kiʻekiʻe ke kumukūʻai. He kūpono no ka hoʻopili ʻana i ka pipeline kiʻekiʻe.

ʻO ka lepa i ulana ʻiao ka puka o loko o kaflangeHoʻohana ʻia i loko o ke kaula paipu, a ʻo ka paipu me ka pili pili pili piha, he ʻano flange non-welded. Hoʻohālikelike ʻia me ka flange welding flat a i ʻole butt welding flange, kahili ʻiaLoaʻa nā hiʻohiʻona o ka hoʻonohonoho ʻana a me ka mālama kūpono, a hiki ke hoʻohana ʻia i kekahi mau pipeline i ʻae ʻole ʻia e welded ma ka pūnaewele.
Alloy steel flangesLoaʻa ka ikaika maikaʻi, akā ʻaʻole maʻalahi ka weld, a ʻaʻole maikaʻi ka hana kuʻi ʻana,nā lepa wilihiki ke koho. Eia nō naʻe, ʻōlelo ʻia ʻaʻole e hoʻohana i nā flanges threaded e pale aku i ka leakage ma lalo o ke ʻano e loli koke ka wela o ka pipeline a i ʻole ke kiʻekiʻe o ka mahana ma mua o 260 ℃ a ma lalo o -45 ℃.