screw flight material with low-carbon,manganese, stainless steel, and it involved in agriculture,foodstuff,grain,chemical Helical Blade;Screw Blade;Spiral Blade;Auger BladeWe can supply the screw-flight with the following demension: inner dia>=8mm,outer dia<=800mm,the thickness between3mm-20mm,any lenth,any pitch,and both rotating directions.we have three manufacturing process accoring to the ...