... seamless tube 3.Size:thickness:1mm-25mm 4.Length:6m 2013 HIGH QUALITY AQUARE RETANGULAR STEEL PIPE 1.Grade:Q195, ... tube, seamless tube3.Size:thickness:1mm-25mm4.Length:6m Product show : Grade Q195, Q235B, Q235C, Q235D, Q345B, Q345C, Q345D, Q345E ... 600*400mm Application Mechanical equipment, solar energy equipment, steel structure, auto part, bridge pile foundation, barrier, inner structure of vessel, ...