Bututun ƙarfe mara ƙarfi don kera bututun, kayan aikin bututu, kayan aiki da tsarin injina
Bututun ƙarfe mara ƙarfi don tsari
GB/T 8162-2008 10 # karfe, 20 # karfe, 35 # karfe, 45 # karfe, Q345, Q460, da dai sauransu
Sumul carbon karfe da gami karfe inji tube
ASTM A519-2006 1018, 1026, 8620, da dai sauransu
Ƙarfe mai zafi wanda ba a haɗa shi da ƙarfe ba da ƙaƙƙarfan tsari na ƙarfe don ɓangaren rami.
TS EN 10210-1-2006 S235GRH, S275JOH, S275J2H, da dai sauransu
Bututun ƙarfe mara nauyi, welded da zafi-tsoma galvanized karfe
ASTM A53/A53M-2012 GR. A, GR.B
