Chitoliro chowotcherera chotalikirapo chokhala ndi mainchesi otalikirapo ndi mawu wamba. Amapangidwa ndi chingwe chachitsulo. Mapaipi omwe amawotcherera ndi zida zowotcherera zothamanga kwambiri amatchedwa mapaipi atali kwambiri. (Dzina limaperekedwa chifukwa ma welds a chitoliro chachitsulo ali mu mzere wowongoka). Pakati pawo, malinga ndi zolinga zosiyanasiyana, pali njira zosiyana zopangira kumbuyo. (Agawanika kukhala chitoliro cha scaffolding, chitoliro chamadzimadzi, chosungira waya, chitoliro cha bulaketi, chitoliro cha guardrail, etc.)

Nthawi zambiri,mipope yachitsulo yowongokandi m'mimba mwake pamwamba 325 amatchedwa lalikulu-m'mimba mwake zitsulo mapaipi. The kuwotcherera ndondomeko lalikulu-m'mimba mwake wandiweyani-mipanda kotalika msoko msoko zitsulo chitoliro ndi iwiri kumbali kumizidwa arc luso kuwotcherera, ndi kuwotcherera Buku angathenso kuchitidwa pambuyo chitoliro zitsulo aumbike. Njira yowunikira kwambiri ndikuzindikira zolakwika. Pambuyo pozindikira cholakwikacho, chikhoza kuperekedwa. Zogulitsa zocheperako ziyenera kuwotchereranso. Mapaipi achitsulo okhuthala okhala ndi mipanda yayikulu m'mimba mwake nthawi zambiri amakhala oyenera kunyamula madzi, kuthandizira zida zachitsulo, ndikuyika mulu. Iwo ankagwiritsa ntchito petrochemical, zomangamanga, uinjiniya madzi, makampani mphamvu, ulimi ulimi wothirira, zomangamanga m'tawuni, etc. Chitoliro zitsulo ayenera kupirira kuthamanga mkati, ndi kuchita 2.5Mpa kuthamanga mayeso, ndi kusunga popanda kutayikira kwa miniti imodzi. Njira yodziwira zolakwika za eddy pano imaloledwa kuti isinthe mayeso a hydraulic. Njira zomangira makamaka zikuphatikizapo UOE, RBE, JCOE, ndi zina zotero, zomwe JCOE ili ndi chiwerengero chachikulu chogwiritsira ntchito. Mapeto a chitoliro amathanso kupangidwa malinga ndi zofuna za makasitomala, zomwe zimatchedwanso threaded ndi uthreaded.

The ndondomeko kupanga lalikulu awiri molunjika msoko zitsulo chitoliro:

Kapangidwe ka mapaipi achitsulo okhala ndi mainchesi akulu akulu nthawi zambiri amaphatikiza njira zopangira monga kugudubuza kotentha, kuponyera kotentha, ndi kuponyera. Mapaipi achitsulo okhala ndi mipanda yayikulu m'mimba mwake nthawi zambiri amagwiritsa ntchito njira zowotcherera zam'mbali ziwiri. Zogulitsazo ndi zopindika, zowotcherera, zowotcherera mkati, ndikukonzedwa kunja. Kuwotcherera, kuwongola, mutu wathyathyathya, ndi njira zina zimakwaniritsa zofunikira zamafuta a petrochemical.

Kugwiritsiridwa ntchito kwa mapaipi akulu akulu owongoka achitsulo amagwiritsidwa ntchito makamaka pazigawo zothandizira thupi, monga kuyika mulu wa mlatho, kuwunjika kwa subsea, ndi milu ya nyumba zazitali.

Zida zomwe zimagwiritsidwa ntchito pamapaipi achitsulo owoneka bwino m'mimba mwake nthawi zambiri ndi Q345B ndi Q345C. Q345D imagwiritsidwanso ntchito m'madera omwe ali ndi kutentha kochepa. Q345E mipope yachitsulo yowongoka m'mimba mwake yayikulu imagwiritsidwa ntchito kwambiri pomanga zitsulo zazikulu.