... Process:Centrifugal Casting 3.ISO 9001:2008 Certificate Heat Exchange Finned Tube 1.Bare tube size: OD25mm-OD160mm ... types of lathe.7.Surface finish processpolishing, sand blasting, heat treatment, painting, powder coating, anodizing, electroplating, mirror ... available.9.Productall kinds of heat resistant steel casting10.AdvantageGood quality and strict delivery time. Heat Exchange Finned Tube