... : For tubular heat exchangers,condensers, and similar heat transfer apparatus.Production Standard, Steel Grade: ASTM A179 Grade A,C,DDelivery Conditions: Heat treatment or over ... , Flaring, Flattening, Flange, Hardness, Impact Test), Dimension and Surface Test, Non-destructive Test, Hydrostatic Test.Surface treatment:Oil-dip, Varnish, Passivation, Phosphorization, Shot Blasting.