SS400 welded carbon square pipe 1)length:5.8 m 2)thickness:0.6-20mm 3)size:15*15-400*400 SS400 welded carbon square pipe for constructionDimeter15*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 paper