Njira yopangira zida za helical iyi ndi izi:
1) Zopangira
2) Kupanga
3) Pre-kutentha normalizing
4) Kutembenuka movuta
5) Malizani kutembenuka
6) Kuwotcha zida
7) Kutentha kuchitira carburizing 58-62HRC
8) Kuwombera mfuti
9) OD ndi Bore akupera
10) Kugaya zida
11) Kuyeretsa
12) Kulemba
13) Phukusi ndi nyumba yosungiramo zinthu
Mabizinesi khumi apamwamba ku China, okhala ndi antchito 1200, adapeza zopanga 31 zonse ndi ma patent 9. Zida zopangira zida zapamwamba, zida zopangira kutentha, zida zoyendera. Njira zonse kuyambira pakupangira mpaka kumaliza zidachitika mnyumba, gulu lamphamvu laukadaulo ndi gulu labwino kuti likumane ndi kupitirira zomwe kasitomala amafuna .
Kujambula
Lipoti la kukula
Lipoti la Heat Treat
Lipoti Lolondola
Lipoti lazinthu
Lipoti lozindikira zolakwika