Rufin pretreatment ya hada da degenreasing (degreasing), tsatsa cirewa, phosphating sassa uku.Phosphating shine hanyar haɗin gwiwa ta tsakiya, raguwa da tsatsawar tsatsa shine tsarin shirye-shiryen kafin phosphating, don haka a cikin aikin samarwa, ba kawai mu dauki aikin phosphating a matsayin mayar da hankali ba, amma kuma fara daga buƙatun ingancin phosphating, yi aiki mai kyau ban da ƙari. mai da cire tsatsa, musamman kula da tasirin juna a tsakaninsu.