Rectangular steel pipe 1)Dimensions:15x15mm-400x400mm(1/2"x1/2"-16 ... 305-12m(1-40ft) 3)Thickness:0.6-16mm Rectangular steel pipeDimeter15*15mm-400*400mm(1/2"*1/2"-16 ... "*16")Thickness0.6-20mmLength0.305-12m(1-40ft)Steel gradeQ195,Q215,Q235,Q345,Fe360,St37-2,SS330SS400,ASTM ... 1010,ASTM 1017,ASTM 1020PackingIn square bundles with warterproof paperAddition1)steel grade :Q195,Q215 Q235 Fe360, St37-2, SS330, ...