... , Pipe cutting machine 130 Sets / Month, Pipe end forming machine 60 Sets / Month, Sharpening machine 20 Sets / Month, Chamfering machine 20 Sets / Month Pipe bending machine 800 Sets, Pipe cutting machine 1 ... ,500 Sets, Pipe end forming machine 600 Sets, Sharpening machine 200 Sets, Chamfering machine 200 Sets ...