Protective Treatment Specifications 2.2.1 System 1: Hot Dip Galvanising Only All items except threaded fasteners shown on the drawings or specified elsewhere herein to be galvanised, shall be hot dip galvanised. For all items other than threaded fasteners, the zinc coating thickness shall not be less than 100 microns and the mass of the zinc coating shall be not less than 750g/m2. Where possible, all galvanised items shall be galvanised after fabrication. Where this is not possible, repair of the zinc coating shall be as specified below. Hollow members shall be vented as required for the galvanising process and subsequently plugged and the galvanising repaired. All threaded fasteners shown on the drawings or specified elsewhere herein to be galvanised shall be hot dipped. 2.2.2 System 2: Hot Dip Galvanised plus Primer Plus Recoatable Catalysed Acrylic Galvanising – As for System 1. Oil and grease should be removed in accordance with SSPC-SP1 solvent cleaning. Apply Etch solution – International interprime 160. Top Coat: 200 microns (D.F.T) High Solids, High Build Micaceous Iron Oxide Epoxy – International Interguard 475 Colour Coat: 75 microns (D.F.T) Two Component Acrylic Polyurethane Finish – International Interguard 990