Surface Preparation for Coating

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2295/aaron/IK/0004Guides to Good Practice in Corrosion ControlThe National Physical Laboratory is operated on behalf of the DTI by NPL Management Limited, a wholly owned subsidiary of Serco Group plcSurfacePreparationfor CoatingContents Preparation of new steelwork 1(paint and metal coatings) of Hand and power tool 2cleaning (St Grades) blast cleaning (Sa Grades) condition immediately4before Additional Surface Soluble iron corrosion Preparation of new metal 5coated dip galvanizing5(i) Mordant solution ( T Wash)5(ii) Weathering6(iii) Etch primers6(iv) Sweep sprayed Preparation of previously coated 7surfaces for maintenance abrasive blast Wet abrasive blast pressure water hand and power 9tool Preparation for maintenance painting11of metal Inspection and quality Additional reference standards and12further sources of sources of information15SurfacePreparationfor CoatingThis is an update of a DTI publication first issued in 1982.

Contents page 1.0 Introduction 1 2.0 Preparation of new steelwork 1 (paint and metal coatings) 2.1 General requirements 1 2.2 General condition 1 2.3 Surface contaminants 2

  Surfaces, Preparation, Coating, Surface preparation for coating, 3 surface