Designation:D6386−10StandardPracticeforPreparationofZinc(Hot-DipGalvanized)CoatedIronandSteelProductandHardwareSurfacesforPainting1ThisstandardisissuedunderthefixeddesignationD6386;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope*1.1Thispracticedescribesmethodsofpreparingsurfacesofnewandweatheredhot-dipgalvanizedsteelforpainting.Hot-dipgalvanizedsteelisproducedbytheimmersionoffabricatedorunfabricatedproductsinabathofmoltenzinc,asspecifiedinSpecificationsA123/A123MorA153/A153M.Thispracticecoverssurfacepreparationonironandsteelproductsandhardwarethathavenotbeenpaintedpreviously.Galvanizedsurfacesmayhavebeentreatedwithprotectivecoatingstopreventtheoccurrenceofwetstoragestain.Thispracticedoesnotapplytosheetgalvanizedsteelproductsnortothecoilcoatingorcontinuousrollercoatingprocesses.SheetandcoilsurfacepreparationcanbedoneinaccordancewithPracticeD7396.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesandtodeterminetheapplicationofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2A123/A123MSpecificationforZinc(Hot-DipGalvanized)CoatingsonIronandSteelProductsA153/A153MSpecificationforZincCoating(Hot-Dip)onIronandSteelHardwareA780PracticeforRepairofDamagedandUncoatedAreasofHot-DipGalvanizedCoatingsB201PracticeforTestingChromateCoatingsonZincandCadmiumSurfacesD7396GuideforPreparationofNew,ContinuousZinc-Coated(Galvanized)SteelSurfacesforPaintingE376PracticeforMeasuringCoatingThicknessbyMagnetic-FieldorEddy-Current(Electromagnetic)Test-ingMetho...
