... 1475*452-6100*804-9130*1205-14140*805-6,8-10Big SizeDia (mm)T(mm)Dia (mm)TmmDia ... *1006-18300*2507-25400*3007-25200*1505-6,8-25320*2007-25420*3507-25250*1005-14350*1007- ... *2007-18600*4008-20square steel pipe:Features:1) Dimentions: 20*20mm-800*800mm, Thickness: 2mm-25mm Length: <13m2 ... ) Material: Q235, Q345, 20#, ST37, ST44, ST52, ASTM A53, ASTM A106,STKR4903) Standards: ...