Pali mitundu yambiri ya zopangira zitoliro, zomwe zimagawidwa malinga ndi momwe amagwiritsidwira ntchito, kulumikizana, zida, ndi njira zopangira. Ndi cholinga 1. Zopangira zitoliro zolumikizira mapaipi ndi: flange, olowa, chitoliro, ferrule, payipi, etc.
Werengani zambiri