Mitundu yosiyanasiyana yowotcherera: zowotcherera zosalala sizingawunikidwe ndi ma radiography, koma ma welds amatha kuyang'aniridwa ndi radiography. Kuwotcherera kwa fillet kumagwiritsidwa ntchito powotcherera lathyathyathyaflangesndiflanges, pamene kuwotcherera girth ntchitomatako kuwotcherera flangesndi mapaipi. Chowotcherera chophwanyika ndi ma weld awiri a fillet ndipo chowotcherera matako ndi matako.
Kusiyana pakati pa kumvekawelded flangendi khosi ndiplain welded flangeopanda khosi ndi ochulukaplain welded flangesndi khosi kuposaflangespopanda kuwotcherera khosi mu welded mbali ya chitoliro. Aflat welded flangewopanda khosi ndi aflat flange, ndipo bwana wopanda flange ndi fillet yafulati. The weld pakati pa khosi butt kuwotcherera flange ndi cholandira olowa ndi B weld.

The weld pakati pakhosi lathyathyathya flangendipo cholowa cholandirira ndi cha C cholumikizira, ndipo kuyesa kosawononga pambuyo pakuwotcherera kumakhala kosiyana. Yerekezerani kusiyana pakatiflat kuwotcherera flangendi matako kuwotcherera flange. Zopangira ndizosiyana: zopangira za khosi lathyathyathya kuwotcherera flange zimakonzedwa kuchokera ku mbale wamba yachitsulo, ndipo makulidwe ake amatha kukwaniritsa zofunikira. Zopangira za butt welding flange yokhala ndi khosi nthawi zambiri zimakonzedwa kuchokera ku zida zachitsulo.
Kuthamanga mwadzina ndi kosiyana: kukakamiza mwadzina kwa khosi lathyathyathya kuwotcherera flange ndi 0.6 - 4.0MPa, pomwe kukakamiza mwadzina kwa khosi matako kuwotcherera flange ndi 1--25MPa. Mwachiwonekere, kupanikizika kwa ntchito kwa khosi lathyathyathya la flange ndikotsika. Njira zosiyanasiyana zolumikizirana: Kusiyanitsa kwamapangidwe pakati pa ma flanges a khosi lathyathyathya ndi kuwotcherera kwa khosi matako ndikuti wolandila ndi flange amalumikizidwa mosiyana. Ma flanges a khosi lathyathyathya nthawi zambiri amakhala cholandirira ndi flange Angle malumikizidwe, pamene khosi butt welded flanges ndi flange ndi cholandirira matako mfundo.