1.mild steel square and rectangular tube 2.size:50x100mm 3.thickness:2.0mm 4.weight/pcs:26.72kg 5.marking size on pipe mild steel square and rectangular tube FeatureDimensions40mmx80mmThickness2.0mmLength5800m or as requestSteel gradeQ195, Q215, Q235, Fe310, Fe360, St33, St37-2, SS330, SS400, S235, S275, S355,ASTM 1010, ASTM 1017, ASTM 1020StandardManufactured to meet ISO9001, ASTM, API, SAE, DIN ...