ISO 12944-4-1998 色漆和清漆防护漆体系对钢结构的腐蚀防护 第4部分 表面类型和表面处理.pdf

EN ISO 12944-4:1998 Contents Page Foreword iii Introduction 1 1 Scope 1 2 Normative references 1 3 Definitions 3 4 General 4 5 Types of surface to be prepared 4 6 Surface preparation methods 4 7 Surface preparation grades 7 8 Surface profile (roughness) and surface profile grading 8 9 Assessment of prepared surfaces 8 10 Temporary protection of prepared surfaces from corrosion and/or contamination 8 11 Preparation of temporarily or partly protected surfaces before application of further coatings 8 12 Preparation of hot-dip-galvanized surfaces 9 13 Preparation of thermally sprayed metal (zinc and aluminium) surfaces 9 14 Preparation of zinc-electroplated and sherardized surfaces 9 15 Preparation of other coated surfaces 9 16 Recommendations regarding pollution and the en