Large size and thin-wall aluminum extruded tubes and pipes, good ovality, high conductivity, good internal wall ... marine alloy coil, sheet and plate*Aluminum foil *Seamless extruded and structural tubes*Industrial and structural extrusions - Mill, anodized and painted finishes ... the extrusion parts. 2. With whole piece extrusion, the extruded part will be more solid and stronger than welded parts ...