1. The auger flight include spiral blade and the middle axis,the material of spiral blade is Low-carbon steel,and the material of the middle axis is 45# steel. 2. About the helical blade of the auger, Continuous cold rolled once ,without welding. 3. Processing range:Outer diameter 800-35mm;inside diameter12-750mm;pitch 30-800mm;thickness 1.5-8mm; and the length we can produce according to the customers requests. 4. Our company have 2 sets of helical blade rolling mill specialized facility and 1 set of vertical cutting slitter 5. Product Description:the products are mainly used to the auger flight of engineering machinery, cement machinery, construction machinery, combine harvester, threshing machine, fodder press, furnace and any other heating machinery, machinery and equipment for cement, coal unloader, planting machine, earth auger, drilling machine, snow plough, snow blower, and the snow sweeper. With the paper bag and the wooden box.