... forging, cutting, riveting, grinding, tapping, extrusion, mold design and processing, die casting, sheet metal working etcYou are warm welcome ... always be our number one priority.Different size and shape and surface treatment of aluminium pipes as you want1 ... 500mm great tube.2 Section: circle, square, rectangle, triangle, shaped and corrugate pipe3 Surface treatment: brushing, sand blasting, polishing, ...