How can I spray the fluorocarbon paint on the bottom of I-beam?
Then primer, general primer with two-component epoxy primer, or epoxy zinc rich primer, primer can enhance adhesion, has a strong rust resistance.
Finally, on fluorocarbon paint, pay attention to fluorocarbon paint without rust prevention ability, only protect primer and base material, acid, alkali, waterproof ability.
First of all, to deal with the base material, grinding, sandblasting, removal of oil, rust and dust, the surface should be clean, exposing the metal luster of steel.