Features :
Grade : Q345B, Q345C, Q345D, Q235, 16Mn, 10#, 20#, 45#, Q195, Q215
Thickness : 0.8-60mm Thickness:0.8-60mmOuter
Diameter : 15*15 -400*400mmTolerance of outer diameter: within±0.5mmLength:2 -12 m, or as customers special requirement.
Shape : Square
Surface Treatment : Galvanized
Usage : Oil, chemical boiler industry
Application: Petroleum, power, gas metallurgy, paper making, chemical, medical equipment, aviation, boiler heat, exchanger, ship building, construction, etc.