Zafafan Bidiyon Samar da Tube mara kyau - Rukunin Royal 

Motsi mai zafi (extrudedbututu mara nauyi): zagaye bututu billet→dumama→huda→mirgina mai-yi uku, ci gaba da mirgina ko extrusion→tsiri→girma (ko rage)→sanyaya→mikewa→Gwajin hydraulic (ko gano kuskure)→yin alama→ajiya

Danyen kayan da ake birki da bututu maras sumul billet ne, kuma za a yanke tayin ta hanyar yankan na'ura don shuka billet mai tsawon kusan mita 1, sannan a kai shi zuwa tanderun ta hanyar bel mai ɗaukar nauyi.Ana ciyar da Billet a cikin tanderun don zafi, zafin jiki yana kusan 1200 digiri Celsius.Man fetur shine hydrogen ko acetylene.Kula da zafin jiki a cikin tanderun baturi ne mai mahimmanci.Bayan bututun zagaye ya fita daga cikin tanderun, dole ne a huda shi ta hanyar matsi.

Gabaɗaya, mafi yawan mai huda shi ne mai hujin mazugi.Irin wannan sokin yana da ingantaccen samarwa, ingancin samfur mai kyau, haɓaka diamita mai girma, kuma yana iya sa nau'ikan ƙarfe iri-iri.Bayan an huda, billet ɗin zagaye na zagaye uku ana birgima a jere, jujjuyawa ko extrusion.Bayan extrusion, ya kamata a cire bututu don yin girma.Girman ramukan jujjuyawar mazugi mai tsayi a cikin billet don samar da bututu.Diamita na ciki na bututun ƙarfe an ƙaddara ta tsawon tsayin diamita na waje na diamita na na'ura mai ƙima.Bayan girman bututun karfe, yana shiga hasumiya mai sanyaya kuma ana sanyaya shi ta hanyar fesa ruwa.Bayan an sanyaya bututun karfe, za a daidaita shi.

Bayan daidaitawa, ana aika bututun ƙarfe zuwa ga gano lahani na ƙarfe (ko gwajin ruwa) ta bel mai ɗaukar nauyi don gano aibi na ciki.Idan akwai tsagewa, kumfa da sauran matsaloli a cikin bututun ƙarfe, za a gano su.Bayan ingancin duban bututun ƙarfe, ana buƙatar zaɓi mai ƙarfi na hannu.Bayan ingancin dubawa na bututun ƙarfe, fenti lambar serial, ƙayyadaddun bayanai, lambar ƙirar samarwa, da dai sauransu tare da fenti.Kuma an ɗaga shi cikin sito ta crane..