1. Q235 steel. 2. With hot galvanized and Hot Spray coapecifications:Street light polePole material is Q235 (or according to customer requirement)With hot galvanized and Hot Spray coaGenerally suggestion:1)6- 8 meters poleTop diameter : 70mm, bottom diameter 150mmflange :280*280*16mm ,thickness 3.25-3.5mm2)8-10 meters poleTop diameter : 80mm, bottom diameter 180mmflange :300*300*18mm, thickness 3.75mm3) 10-12 meters poleTop diameter : 90mm bottom, diameter 210mmFlange: 330*330*20mm, thickness 4mm