Sigma steel post Dimension: 2300mm*100*55*4mm Standard with hot dip Galvanized: 550g/m2 min Sigma steel postMaterial: Q235, Q345, ... manufacture a range of steel post for guardrail: sigma post, C post, H post and U post.Our sigma post is treated by hot- ... dipped galvanized, and is durable, high intensity and corrosion resistant. Sigma steel post ...