Hot dip galvanized guardrail Dimension 4318( ± 5) * 315( ± 5) * 84( ± 5) mm Dimension 4320mm* 311* 83* 2.75--4mm Thickness: 2.75( ± 0.2) mm Standars with hot dip galvanized : e70 ¼ m and 505 gr/ m2 material: steel Q235( Q235JR) or Q345( Q355JR) or Q255JR