... as per drawings or samples 4.100% inspection Item NO. welded steel ringsMaterialsIron, aluminum, steel, copper, plastic, carbon steel, nylon ... , CNC lathe, grinding machine, automatic lathe machine, conventional lathe machine, milling machine, drilling machine, EDM, wire-cutting machine, CNC bending machine etc.Service projectTo provide ... our great pleasure to be on service of you! welded steel rings