... 10CrMo910, C...Thickness: 0.6 - 15 mmSection Shape: SquareOuter Diameter: 10*10-500*500Place of Origin: Tianjin China (Mainland)Secondary Or Not ... Black square tube with A53 material 1,mild steel 2,10-15days delivery time 3,15-15mm-200*200mm 4, ... 15mm -200*200mmThickness:0.6mm-12mmLength: 4-9mDelivery time:10-15days after depositLoad Port:Tianjin XingangAvailable materials: Q195, Q235, Q345, St33, St37 ...