... by powder coating after hot dip galvanizing5.Design drawing as below6.equipment7.certification8.usually packing pic9 finished sample for ... arm . Stainless steel poles, Flag mast stainless steel pole, aluminum street light poles, traffic lighting steel poles, telecom tower ... flanges , are made by hot-rollsteel coil ,the process as cut plate, bending ,forming,automatic welding,drill holes ,quality ...