Na'urar ƙarfe, wadda aka fi sani da na'urar ƙarfe. Ana birgima ƙarfen ta hanyar matsewa mai zafi da kuma matsewa mai sanyi. Domin sauƙaƙe ajiya da jigilar kaya da kuma sarrafawa daban-daban. Na'urar da aka ƙirƙira galibi na'urar ce mai zafi da kuma na'urar sanyi. Na'urar da aka yi amfani da ita wajen sarrafa na'urar zafi kafin a sake yin amfani da ita. Na'urar sanyi da aka yi amfani da ita wajen sarrafa na'urar zafi. Masana'antarmu galibi tana samarwa kuma tana aiki da na'urar sanyi da aka yi amfani da ita. Na'urar ƙarfe, na'urar launi da abokan cinikinmu na haɗin gwiwa galibi suna yin odar na'urar ƙarfe mai nauyin kimanin tan 25-27. Ƙarfin samar da na'urar zafi da aka yi amfani da ita a China yana ci gaba da faɗaɗa, akwai layukan samar da na'urar zafi da dama, kuma wasu ayyuka za a gina ko a fara aiki da su. Misali, muna sayar da na'urar ƙarfe mai galvanized dx51d Z100 da kyau.

Naɗin murfin launi samfuri ne da aka gina bisa farantin galvanized mai zafi, farantin zinc na aluminum mai zafi da farantin electro galvanized. Bayan gyaran fuska (ƙazanta sinadarai da maganin canza sinadarai), ana shafa saman Layer ɗaya ko fiye na murfin organic a saman, sannan a gasa shi a kuma ƙarfafa shi. An sanya masa suna bayan naɗin ƙarfe mai launi da aka shafa da launuka daban-daban na murfin organic, wanda ake kira naɗin mai launi a takaice. Baya ga kariyar layin zinc, naɗin organic da ke kan layin zinc yana taka rawa wajen rufewa da kare layin ƙarfe mai launi da aka shafa da tsiri na ƙarfe mai zafi a matsayin kayan tushe, don hana tsiri na ƙarfe yin tsatsa. Rayuwar sabis ɗin ta fi ta tsiri na ƙarfe mai haske sau 1.5. Naɗin mai launi yana da nauyi mai sauƙi, kyakkyawan kamanni da kyakkyawan aikin hana tsatsa, kuma ana iya sarrafa shi kai tsaye. Yawancin lokaci ana raba launin zuwa launin toka, shuɗin teku da ja mai bulo. Ana amfani da shi galibi a masana'antar talla, masana'antar gini, masana'antar kayan gida, masana'antar kayan lantarki, masana'antar kayan daki da masana'antar sufuri.

Rufin da aka yi amfani da shi a cikin nadin fenti mai launi zai zaɓi resin da ya dace bisa ga yanayin amfani daban-daban, kamar polyester silicon modified polyester, polyvinyl chloride plastic sol, polyvinylidene chloride, da sauransu. Masu amfani za su iya zaɓa bisa ga manufar.