Spiral steel pipendi kupanga ndondomeko, anthu anatulukira njira zambiri zabwino kwambiri kuwotcherera ndi kupanga, ndipo kwambiri kulimbikitsa wokhazikika ndi mofulumira chitukuko cha makampani, kumapangitsanso makampaniwa pa chitukuko cha wokometsedwa.Makinawa kumizidwa arc kuwotcherera ndi njira yatsopano kuwotcherera, anatulukira mu 1940, ndi malo omwewo ndi kutsogolo kwa kuwotcherera Buku ndi kapena slag kutetezedwa, koma zotsalira izi si elekitirodi ❖ kuyanika, kuwotcherera mankhwala makamaka smelting.Mu waya, ndi njira ndi chingwe cholumikizira waya kutumiza waya kuwotcherera, mosalekeza anatumiza kwa waya, njira kuwotcherera ndi mosalekeza kudyetsa waya, arc anayaka meltable particulate solder Kuphunzira pa waya, ndi zinthu m'munsi, ndi mbali. Kusungunuka ndi kutuluka kwa mpweya wa flux kumapanga kabowo kakang'ono mkati mwa khola loyaka moto, choncho tchulani kuti kuwotcherera kwa arc basi.Arc imayikidwa m'chipinda chapansi.Dongosolo lamankhwala owotcherera limapakidwa ndi mankhwala owotcherera a fannel kudzera papaipi yomwe imaperekedwa kutsogolo kwa chowotcherera.Chachiwiri kusiyana si ntchito maelekitirodi, ntchito waya, chifukwa waya akhoza mosalekeza anatumiza;elekitirodi, kutentha elekitirodi ayenera kuwotcherera ndodo mutu kupereka kuponya, ndi ntchito anasiya, ena kuwotcherera ndodo ndiyeno welded.

Chotero kuwotcherera njira poyerekeza ndi njira zina, pali mwayi waukulu wa kuwotcherera kumizidwa arc wozungulira chitoliro njira imeneyi, mwayi woyamba anazindikira yodzichitira;ubwino chachiwiri, ndi m'manda arc pansi kuwotcherera, kotero kutentha ake kuwotcherera ndi chitetezo ntchito ndi amphamvu, ndi mkulu kuwotcherera khalidwe;Ubwino wachitatu, popeza zodziwikiratu kumizidwa arc kuwotcherera arc m'manda pansi pa kuwotcherera mankhwala, kotero angagwiritsidwe ntchito lalikulu panopa, dzuwa kuwotcherera ndi mkulu.

Kuphatikiza apo, zitsulo zozungulira zozungulira zozungulira zitsulo zozungulira, zowotcherera zodziwikiratu (zomwe zimadziwikanso kuti chitoliro chachitsulo chozungulira, chitoliro chozungulira) mkati mwa msoko ndi chitoliro chakunja chowotcherera kozungulira chitsulo.Pazifukwa zotsatirazi, zitha kugwiritsidwa ntchito kwambiri popanga chitoliro chachikulu chozungulira:
1) kusintha kupanga ngodya, mungagwiritse ntchito m'lifupi chomwecho Mzere wa Mzere zitsulo chitoliro kupanga calibres zosiyanasiyana;
2) chifukwa ndi kupindika mosalekeza, kozungulira zitsulo chitoliro kudula utali wopanda malire;
3) kuwotcherera muzimu wogawana anagawira lonse kozungulira chitoliro circumference, miyeso yolondola ya ozungulira chitoliro ndi mkulu, mphamvu ndi mkulu;
4) zosavuta kusintha kukula, oyenera zochulukira pang'ono zitsulo ozungulira kupanga mitundu yambiri.