1. Posankha chothandizira mapaipi ndi chopachikira, chothandizira ndi chopachikira choyenera chiyenera kusankhidwa malinga ndi kukula kwa katundu ndi komwe malo othandizira ali, kusamuka kwa payipi, kaya kutentha kogwirira ntchito kuli kotetezedwa ndi kozizira, komanso zinthu za payipi:

2. Popanga zothandizira mapaipi ndi zopachikira, zopachikira za mapaipi wamba, zothandizira mapaipi ndi zopachikira mapaipi ziyenera kugwiritsidwa ntchito momwe zingathere;

3. Zothandizira mapaipi ndi zopachikira mapaipi zolumikizidwa zimasunga chitsulo kuposa zothandizira mapaipi ndi zopachikira mapaipi zamtundu wa clamp, ndipo ndi njira zosavuta kupanga ndi kumanga. Chifukwa chake, kupatula pazochitika zotsatirazi, zopachikira mapaipi ndi zopachikira mapaipi zolumikizidwa ziyenera kugwiritsidwa ntchito momwe zingathere;

1) Mapaipi opangidwa ndi chitsulo cha kaboni chokhala ndi kutentha kwapakati mu chitoliro chofanana kapena choposa madigiri 400;

2) payipi yotenthetsera pang'ono;

3) Mapaipi achitsulo cha alloy;

4) Mapaipi omwe amafunika kuchotsedwa ndi kukonzedwa pafupipafupi popanga;