Customized Height Outdoor Steel Tubular Pole, Power Pole, Electrical Pole Material High-quality steel Q235/SS400 from BAOSTEEL Group Welding Technique Automatic submerged arc welding Surface Treatment Hot dip galvanizing and powder painting Welding Standard GB11345 Grade Ⅱ Thickness of Zinc Coating ≥ 86um Adhesive Force of Zinc Coating GB2694-88 Anti-wind Capacity 36.9m/s Anti-corrosion Lifetime ≥20 years Coating Layer Thickness ≥100um Adhesive force GB9286-880 Hardness ≥2H