Zopanda msoko:kulasidwa, kujambulidwanso, kutsekeredwa (njira yozungulira ma pass-multi-pass).
Welded:zowotcherera kwa nthawi yayitali, zojambulidwanso, zotsekera (njira yozungulira ma pass-multi-pass).
Kulongedza:Tubing ndi bala lomwe limakulungidwa pa ng'oma zachitsulo / matabwa kapena spools.
Ng'oma zonse kapena masipu amadzaza m'mabokosi amatabwa kuti azitha kugwira ntchito mosavuta.