Mapaipi achitsulo okhuthala okhala ndi mipanda ikuluikulu amapangidwa kuchokera ku zitsulo zachitsulo kapena zitsulo zolimba zozungulira zomwe zimabowoleredwa m'machubu a capillary ndiyeno amakulungidwa ndi kutentha. Mipope yachitsulo yokhuthala ndi mipanda ikuluikulu imagwira ntchito yofunika kwambiri pamakampani opanga mapaipi azitsulo m'dziko langa. Malinga ndi ziwerengero zosakwanira, pali oposa 240 opanga zitoliro zopanda msoko m'dziko langa komanso oposa 250 okhala ndi mipiringidzo yayikulu yokhala ndi mipanda yachitsulo yopanda msoko. Large-diameter wandiweyani-mipanda opanda msokonezo mapaipi zitsulo makamaka zochokera awiri kunja kwa chitoliro zitsulo. Nthawi zambiri, omwe ali ndi mainchesi akunja opitilira 325 mm amatchedwa mapaipi achitsulo okhala ndi mainchesi akulu. Ponena za makoma okhuthala, nthawi zambiri, omwe ali ndi makulidwe opitilira 20 mm ndiokwanira. Zotsatirazi ndi kupanga mapaipi achitsulo: Zopangira zazitsulo zazitsulo ndizopanda zitoliro zachitsulo. Zosowekapo zitoliro ziyenera kudulidwa ndi makina odulira kukhala opanda kanthu ndi kutalika pafupifupi 1 mita.

Ndipo kutumizidwa ku ng'anjo kuti itenthedwe kudzera pa lamba wotumizira. Billet imalowetsedwa mu ng'anjo ndikutenthedwa mpaka kutentha pafupifupi 1200 ° C. Mafutawa ndi hydrogen kapena acetylene. Kuwongolera kutentha mu ng'anjo ndi nkhani yaikulu. Pambuyo pozungulira chubu chotuluka mu ng'anjo, iyenera kubayidwa ndi makina okhomerera. Nthawi zambiri, makina oboola omwe amapezeka kwambiri ndi makina oboola a tapered. Makina oboola amtundu uwu ali ndi magwiridwe antchito apamwamba, mtundu wabwino wazinthu, kukulitsa kwakukulu koboola m'mimba mwake, ndipo amatha kulowa mumitundu yosiyanasiyana yazitsulo. Pambuyo pobowola, chubu chozungulira chopanda kanthu chimapingidwa motsatizana, kukulungidwa mosalekeza, kapena kutulutsa ma roller atatu. Pambuyo extrusion, chitoliro ayenera kuchotsedwa ndi calibrated. Makina owerengera amazungulira pobowola tapered mothamanga kwambiri kulowa muzitsulo zopanda kanthu kuti abowole mabowo kuti apange chitoliro chachitsulo. M'mimba mwake wamkati wa chitoliro chachitsulo chimatsimikiziridwa ndi kutalika kwakunja kwa chobowola cha makina opangira. Chitoliro chachitsulo chikakula, chimalowa munsanja yozizirira ndipo chimakhazikika ndi kupopera madzi. Chitoliro chachitsulo chikakhazikika, chidzawongoledwa (kwenikweni, opanga ambiri sagwiritsanso ntchito makina owongoka, koma mwachindunji kuwongola chitoliro chachitsulo pambuyo podutsa mphero. Yafika pakuwongoka kwa chitoliro chake chokha). Pambuyo kuwongola, chitoliro chachitsulo chimatumizidwa ku chowunikira chachitsulo (kapena kuyesa kwa hydraulic) ndi lamba wotumizira kuti azindikire zolakwika zamkati. Ngati pali ming'alu, thovu, ndi mavuto ena mkati mwa chitoliro chachitsulo, adzadziwika. Pambuyo poyang'anitsitsa bwino, mapaipi achitsulo ayenera kusankhidwa mosamala (tsopano onse ali ndi kuyendera kwa laser).