... Then minimum thickness is 1.0mm2. The maximum length is 7.3m3. Surface treatment: mill finished, anodized,powder coating, ... powder coating, electroplate department, Die casting department, Fabrication department ,CNC Center , window and door assemble department.3. Our products ... : cutting, millign, drilling , punching, sawing, lathe, weld and CNC.7. Hight quality guarantee. anodizing aluminium pipe