1. Kuyang'anira maonekedwe azopangira chigoba chitoliro: Nthawi zambiri, kafukufuku wamaso wamaliseche ndiye njira yayikulu. Kupyolera mu kuyang'ana maonekedwe, imatha kupeza zolakwika zowotcherera zitoliro za chigongono, ndipo nthawi zina amagwiritsa ntchito galasi lokulitsa maulendo 5-20 kuti afufuze. Monga m'mphepete kuluma, porosity, kuwotcherera zotupa, pamwamba ming'alu, slag kuphatikiza ndi malowedwe, etc. mawonekedwe mawonekedwe a weld angathenso kuyeza ndi chojambulira kuwotcherera kapena chitsanzo.

2. Kuwunika kosawonongeka kwa zida zapaipi ya elbow: kuyang'anira slag, porosity, ming'alu ndi zolakwika zina zobisika mu weld. X - ray kuyendera ndi kugwiritsa ntchito X - ray kujambula zithunzi za msoko wowotcherera, molingana ndi malingaliro oipa kuti muwone ngati pali zolakwika zamkati, chiwerengero ndi mtundu wa zolakwika. Tsopano zomwe zimagwiritsidwa ntchito kwambiri ndikusankhidwa kwa X-ray kuyendera, komanso kuyang'anira akupanga ndi kuyang'anira maginito. Kenako malinga ndi luso lazogulitsa kuti muzindikire ngati weld ali woyenera. Panthawi imeneyi, mafunde onyezimira amawonekera pazenera. Malingana ndi kufananitsa ndi kuzindikiritsa mafunde owonetseredwawa ndi mafunde abwinobwino, kukula ndi malo omwe chilemacho chingadziwike. Kuzindikira zolakwika za akupanga ndikosavuta kuposa X-ray, kotero kumagwiritsidwa ntchito kwambiri. Komabe, kuyang'ana kwa akupanga kumatha kuweruzidwa ndi zochitika za opareshoni, ndipo sangachoke pakuwunika. Dothi la akupanga limatumizidwa kuchokera ku probe kupita kuchitsulo, ndipo likafika pa mawonekedwe azitsulo-mpweya, limasokoneza ndikudutsa mu weld. Ngati pali zolakwika mu weld, mtengo wa akupanga udzawonetsedwa ku kafukufuku ndikunyamulidwa, chifukwa zolakwika zamkati za weld pamwamba sizili zakuya komanso mawonekedwe ang'onoang'ono ang'onoang'ono, kuzindikira kolakwika kwa maginito kungagwiritsidwenso ntchito.

3. The makina katundu chigongono chitoliro mayeso: nondestructive kuyezetsa akhoza kupeza chilema chibadidwe cha weld, koma sangathe kufotokozera zitsulo mawotchi katundu mu kutentha anakhudzidwa zone wa weld, kotero nthawi zina kuti mavuto, kukhudzika, kupindika ndi zoyesera zina pa olowa welded. Kuyesera uku kumachitika ndi bungwe loyesera. Chipinda choyesera chomwe chimagwiritsidwa ntchito chimakhala chowotcherera bwino pamodzi ndi msoko wamtali wa silinda kuti zitsimikizire kuti zomanga zimakhazikika. Kenako makina amakina a mbale yoyesera amayesedwa. M'zochita, zolumikizira zowotcherera zazitsulo zatsopano zimayesedwa pankhaniyi.

4. Kuyesa kwapaipi ya Elbow ndi kuyesa kukakamiza: pazofunikira zosindikizira chotengera chokakamiza, kuyesa kuthamanga kwa madzi ndi (kapena) kuyesa kukakamiza, kuti muwone kusindikiza ndi kukakamiza kwa weld. Njirayi ndi kubaya 1.25-1.5 nthawi mphamvu yamadzi yogwira ntchito kapena yofanana ndi mphamvu yogwira ntchito ya gasi (makamaka ndi mpweya) mumtsuko, khalani kwa nthawi inayake, ndiyeno mufufuze kutsika kwa mphamvu mu chidebecho, ndikufufuza ngati pali kutayikira kunja, malinga ndi izi akhoza kuzindikira ngati weld ali woyenera.