I-flange engekho-standard luhlobo lweiflangengokunxulumene nomgangatho wesizwe okanye imigangatho ethile yangaphandle. Ngenxa yokuba umgangathoiflangeayikwazi ukuhlangabezana neemfuno zokusetyenziswa kwezinye iimeko ezikhethekileyo, kuyimfuneko ukuguqula nokuphucula umgangatho othileiiflange. I-flange engekho-standard iveliswa, kwaye kukho iimfuno kuyilo lwe-non-standardiflange.
Amaqokobhe ezixhobo zekhemikhali anokwenziwa ngokuphosa,ukwenza, okanye i-welding, okanye ngokwenza iinxalenye ezininzi kwaye emva koko zihlanganiselwe kuqhagamshelwano olunokuchithwa. Esi sakhiwo ngakwesinye icala, umsebenzi wenkqubo yoyilo ekuvuleni iimfuno zoqhagamshelo, kwelinye icala kwakhona kukwenza, ukufakwa kunye nokugcinwa kokulula. Zininzi izakhiwo zoxhulumaniso ezikhutshwayo kwizixhobo zekhemikhali, ezifana nokudityaniswa kwentambo, uqhagamshelo lwesokhethi kunye noqhagamshelo lweflange.
Ukusuka kwimbono yoyilo, uqhagamshelo lwe-flange olufakwe kwi-bolted ukuba luthathelwe ingqalelo njengenkqubo, kunye nokuvuza njengenqobo yoyilo, kufuneka kube nengqiqo, kodwa iminyaka yoyilo lophononongo lubonise ukuba ngenxa yokuntsokotha kwe-anomalies yokusebenza kwe-gasket, amava angaphantsi kweli xesha, ngoko ngoku uyilo lwe-flange lusekelwe ekucingeni ukusuka kumandla, oko kukuthi ukulawula uxinzelelo lwe-flange kuyilo.

Ukusuka kumbono woyilo, iiflange zinokwahlulwa zibe ziindidi ezintathu:
1. I-flange ekhululekileyo ithetha ukuba i-flange ayigxininisi ngokuthe ngqo kwiqokobhe okanye igxininiswe kodwa ayinakuqinisekisa ukuba i-flange kwiqokobhe iyonke ukuthwala isakhiwo somthwalo webholithi.
2. Okudityanisiweyoiflange, oko kukuthi, i-flange yenziwe okanye iphoswe emzimbeni omnye kwiqokobhe, okanye i-weldediflangeisetyenziselwa ukuba ngumzimba omnye kwiqokobhe.
3. Naliphi na i-flange, ukusuka kumbono wesakhiwo, le flange idibaniswe negobolondo iyonke, kwaye ukuqina kubi ngaphezu kwe-flange yonke.
Nokuba luhlobo luni naiflange, indlela yokubala amandla oyilo ingabandakanya iingxaki ezimbini ezisisiseko: enye kukuba iinxalenye kwisakhiwo soqhagamshelwano lweflange kufuneka sibe namandla okwaneleyo. Okwesibini, uxhumano ngokwalo kufuneka luqinisekiswe ukuba lutywinwe.