Chitoliro cha ERW ndi chitoliro cha LSAW onse ndi mapaipi owongoka owongoka, omwe amagwiritsidwa ntchito kwambiri ponyamula madzimadzi, makamaka mapaipi akutali amafuta ndi gasi. Kusiyana kwakukulu pakati pa ziwirizi ndi ndondomeko yowotcherera. Njira zosiyanasiyana zimapangitsa kuti chitolirocho chikhale ndi mawonekedwe osiyanasiyana ndipo ndi yoyenera pazochitika zosiyanasiyana zogwiritsira ntchito.

Chubu cha ERW chimagwiritsa ntchito kuwotcherera kwanthawi yayitali ndipo chimagwiritsa ntchito zitsulo zachitsulo zopindika zotentha ngati zopangira. Monga imodzi mwamapaipi omwe amagwiritsidwa ntchito kwambiri masiku ano, chifukwa chogwiritsa ntchito zitsulo zopindika / zokopera zokhala ndi yunifolomu komanso miyeso yolondola ngati zida zopangira, ili ndi maubwino olondola kwambiri, makulidwe a khoma yunifolomu, komanso mawonekedwe abwino apamwamba. Chitoliro ali ndi ubwino waufupi weld msoko ndi kuthamanga kwambiri, koma ndondomekoyi imangotulutsa mapaipi ang'onoang'ono ndi apakati-m'mimba mwake (malingana ndi kukula kwa chingwe chachitsulo kapena mbale yachitsulo yomwe imagwiritsidwa ntchito ngati zopangira). The weld msoko sachedwa imvi mawanga, unfused, grooves Kuwonongeka kwa dzimbiri. Madera omwe amagwiritsidwa ntchito kwambiri ndi gasi wam'tauni komanso kayendedwe ka mafuta osapsa.

The LSAW chitoliro utenga anamira arc kuwotcherera ndondomeko, amene amagwiritsa limodzi sing'anga-wokhuthala mbale monga zopangira, ndi kuchita kuwotcherera mkati ndi kunja pa malo kuwotcherera ndi kutambasuka m'mimba mwake. Chifukwa cha mitundu yosiyanasiyana ya zinthu zomalizidwa pogwiritsa ntchito mbale zitsulo monga zopangira, ma welds ali ndi kulimba kwabwino, pulasitiki, kufanana ndi kuphatikizika, ndipo ali ndi ubwino wa m'mimba mwake waukulu wa chitoliro, makulidwe a khoma la chitoliro, kukana kuthamanga, kukana kutentha kwapansi ndi kukana kwa dzimbiri. . Popanga mapaipi amphamvu kwambiri, olimba kwambiri, okwera mtunda wautali wamafuta ndi gasi, mapaipi ambiri achitsulo omwe amafunikira ndi mipope yayikulu-yachikulu-yokhuthala yowongoka, yomwe ili pansi pamadzi arc welded mapaipi. Malinga ndi muyezo wa API, m'mapaipi akulu amafuta ndi gasi, mukadutsa madera a Gulu 1 ndi Gulu la 2 monga madera a mapiri, nyanja zam'mphepete mwa nyanja, komanso madera okhala ndi anthu ambiri m'matauni, mapaipi owongoka omizidwa ndi ma arc welded ndi mtundu wokhawo womwe wasankhidwa.