23-page engineering reference for specifying corrosion protection on solar mounting structures: aluminium anodizing classes by C1–CX corrosivity category (ISO 7599 / QUALANOD), hot-dip galvanizing thickness per ISO 1461:2022, paint systems for bare carbon steel and HDG duplex per ISO 12944-5:2019 (Tables B.2/B.3, Annex C/D), and fastener selection — HDG, thermal-diffusion coated, SS304/A2 and SS316/A4 — with neutral-salt-spray acceptance targets and ready-to-use procurement wording. REV. 2026, 36 primary sources cited.
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