... *Hot sale rice *Fast delivery time Hot dip galvanized square tube 1.Materia:Q195-Q235-Q345 2.Size:(0.7-2 ... -300mm) 3.Zinc coated: 60-120 g/m2ASTM A500 Galvanized square tubeStandardASTM , GB , BS , JISMaterialQ195 , Q215 , Q235 , ... Q345Section shapeRound , Square, RectangularOuter diameter20 * 20 – 300 * 300mmThickness0.7-2.5mmZn coated60- ...