I have galvanised railings to paint, after using a mordant solution in preparation what paint in white could you recommend in 1ltr tins would the combi colour be ok.
Assuming the galvanised steel railings are clean, dry, sound and prepared as detailed in the Technical Data Sheet we can recommend Rust-Oleum CombiColor Original.
This is available in many RAL and BS colours in a matt, satin or gloss finish.
For a Mordant Solution we can recommend Teamac Mordant Solution (T Wash).