Bututun ƙarfe mara ƙarfe ga bututun mai, bututun bututun bututun, kayan aikin injiniyoyi
Tube mara haske bututu don tsari
GB / t 8162-2008 10 # karfe, 20 # karfe, 35 # karfe 45, Q465, ETC
Sumbon carbon karfe da alloy kayan tube
Astm A519-2006 1018, 1026, 8620, da sauransu
Hot-birgima da ba komai ba enoy commital karfe da kyau-gasa da hatsi na m don m sashen
BS EN 10210-1-2006 S235GrH, S275JOH, S275JOH, da sauransu
M, welded da zafi-diji galvanized karfe shambura
Astm A53 / A53m-2012 Gr. A, GR.B
