Galvanized Tube 1.Grade:SGCC DX51D DX53D DX54D, etc ... 10.0-165mmWeight0.43-18.69kg/mLength5.8-12mUsageGalvanized tube are used for city heat supply, gas, low ... I-Beam, Channel, Angle, H-Beam, C-Beam, Galvanized Steel Coil, Hot Rolled Steel Plate, Cold Rolled Steel ... Steel, difference kind of pipes, Galvanized Steel Pipe, Seamless Steel Pipe, Square/Rectangular Steel Tube, Light/Heavy Steel Rail and ...